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The Who’s Who on LinkedIn – Storage / VMware / Cloud Computing Groups

March 10th, 2009 No comments

Continuing the efforts to put together a list of various different Social Media channels for networking with Storage Folks, here is some additional information for Storage Related Groups on LinkedIn.

In the previous posts, we discussed different Storage Bloggers in the Blogosphere.

LinkedIn is another great place to network with fellow storage experts, colleagues, customers, vendors and other professional contacts.

Below are 3 categories of Groups: Storage, VMware and Cloud Computing on LinkedIn. As you join the groups below (all or just a subset), you will see the benefits of it as you can now communicate to a large group of people and get a larger set of audience for blogs, news, etc.

Being part of a group allows you to start and respond to discussions about a technology, topic within a group. With the news section a group member can take advantage to post latest news, topics, articles, post, etc. There is a Jobs section that is used by group members to post new job opening. As you join a group, you can freely communicate via email or LinkedIn to all group members. For example the Storage Professionals group has more than 3200 Storage and VMware experts throughout the world and you can communicate with any of them.

Below is a list of at least top 10 Groups within Storage, VMware and Cloud Computing. Please use the links below to join any of these groups.

Since I initially started the Storage Professionals Group, I will take this opportunity to further promote it…. Below are the group details (On an average this group is growing by 30 to 40 storage & virtualization experts a day).

Storage Professionals: Group of Data Storage Specialists – SAN, NAS, CAS, DASD, Cloud Optimized Storage (Cloud Computing), Storage Virtualization that follow trends and products from leading manufacturers like EMC, HDS (Hitachi), HP, NetApp, 3Par, Data Domain, Pillar Data, VMware for Service, Support, Product Features, Networking, Jobs, Message Board, Discussions, Blogs. Storage Engineers, Storage Architects, Data Center Managers, SAN Implementation Specialist, Storage Managers join to discuss issues and projects related to Storage. If you are Certified on EMC, VMWare, HP, HDS (Hitachi), NetApp or are an Industry leader or visionary please feel free to join this group.

Owner: Devang Panchigar | 3,211 members | ShareJoin this group »
To connect to me on LinkedIn, please see on the right side of the page theLinkedIn icon, click on it and you should be able to send a request.

Goodluck LinkedIn’ng……….

Storage Groups


The Storage Group

The Storage Group is for Storage/SAN architects, engineers, managers and anybody else involved in the Storage industry. Share ideas and experiences, ask for assistance with a storage issues, etc.

Owner: Carey Lott | 5,301 members | ShareJoin this group »

The Storage Networking Industry Association

SNIA is a not-for-profit association of the leading hardware and software companies in the networked digital storage and information management business. SNIA’s mission is to lead the storage industry worldwide in developing and promoting standards, technologies, and educational services.

Owner: Rick Bauer | 3,344 members | ShareJoin this group »

Storage Professionals

Data Storage Professionals – SAN, NAS, CAS, DASD, Cloud Computing, Storage Virtualization. Blog: http://www.storagenerve.com, We follow products from manufacturers: EMC, HDS (Hitachi), HP, NetApp, 3Par, Data Domain, PillarData, VMware for Service, Support, Features, Jobs, Message Boards, Networking.

Owner: Devang Panchigar | 3,166 members | ShareJoin this group »

Storage Specialists

Storage Specialists is founded by CSN Group (Continuity Services the Netherlands) for Storage Specialists and IT-Professionals.

Owner: Erik van der Ven | 2,357 members | ShareJoin this group »

Storage: SAN, NAS

This is a Networking group as in Network Appliance w/1,000+ members. Do you use SAN or NAS? This is the place for Data Storage Networking. My idea-create a true networking group. So: 1 Only storage related professionals please 2 I created a GoogleGroup, please join, post and intro yourself.

Owner: Jeff Kronisch | 2,078 members | ShareJoin this group »

EMC

Group created to group EMC employees. EMC, where information lives, information management, networked storage. Discussions have been disabled of this group due lot of spam problems.

Owner: Adolfo Nascimento | 1,819 members | Share |Join this group »

Cloud Storage

The Cloud Storage group was formed in order to provide a common ground for the introduction and advancement of cloud storage and computing technology

Owner: Reuven Cohen | 1,776 members | ShareJoin this group »

Storage Monkeys

Storage Monkeys is the premier peer social networking organization for data storage users. Group topics include SAN, NAS, iSCSI, Fibre Channel technologies as well as storage / server virtualization (including VMware). The official web site for Storage Monkeys is http://www.StorageMonkeys.com

Owner: Tim Masters | 1,225 members | ShareJoin this group »

NetApp

NetApp creates innovative storage and data management solutions that help to accelerate business and achieve outstanding cost efficiency. Our dedication to principles of simplicity, innovation, and customer success has made us one of the fastest-growing storage and data management providers today.

Owner: Neil Stanley | 1,079 members | ShareJoin this group »

UK Storage Professionals

Set up to distinguish UK storage ( DAS / NAS / SAN ) for technical or sales professionals, encourage networking, knowledge share, consulting and job opportunities. Requirement to join is to have a strong affiliation with UK Storage market.

Owner: Drew Percival | 871 members | ShareJoin this group »

Backup & Recovery Professionals

This is a group of highly skilled Backup & Recovery Professionals proficient in different software and hardware storage technologies.

Owner: Demetrius Malbrough | 771 members | Share |Join this group »


VMWARE GROUPS

Official VMware Virtualization Group

This is a VMware led group for virtualization professionals to expand their network of contacts, share idea’s and increase market awareness. You will receive regular updates on VMware activities including recruitment plans.

Owner: Gavin Barnard | 9,600 members | ShareJoin this group »

Storage Professionals

Data Storage Professionals – SAN, NAS, CAS, DASD, Cloud Computing, Storage Virtualization. Blog: http://www.storagenerve.com, We follow products from manufacturers: EMC, HDS (Hitachi), HP, NetApp, 3Par, Data Domain, PillarData, VMware for Service, Support, Features, Jobs, Message Boards, Networking.

Owner: Devang Panchigar | 3,166 members | ShareJoin this group »

VMware Certified Professional (VCP)

Members of this group have gained the in-depth skills and industry-recognized certification on VMware technology. The VMware Certified Professional Program is designed for everyone who wants to demonstrate their expertise in virtual infrastructure and increase his potential for career advancement.

Owner: Eric Sloof | 3,143 members | ShareJoin this group »

IT Core Infrastructure

This group is a forum to connect talented IT engineers focused on core infrastructure technologies, including: SAN/NAS, VMware/virtualization technologies, Citrix, Active Directory, Exchange, Cisco, VOIP, Disaster Recovery, etc.

Owner: Jeff Nussbaum | 2,877 members | ShareJoin this group »

VMware Virtual Community

This is a virtual and collaborative community designed to facilitate business and social interaction between those that have embraced the value of virtualization.

Owner: Kelly Freeman | 1,758 members | ShareJoin this group »

Virtualization Solutions

Ths is a group to expand our knowledge and share experience about virtualization based in: VMware, XEN, Hyper-v and other technologies

Owner: Hernan Cuevas | 1,551 members | ShareJoin this group »

VM People Virtualization & Cloud Group

This is a group for Virtualization & Cloud Computing professionals to network and discuss industry related topics such as Virtualisation, VMware, Microsoft Hyper-V, Citrix Xen and more. Technical Q&A, News, and Recruitment are all supported and encouraged in this group.

Owner: Mike Hilton | 1,412 members | ShareJoin this group »

Storage Monkeys

Storage Monkeys is the premier peer social networking organization for data storage users. Group topics include SAN, NAS, iSCSI, Fibre Channel technologies as well as storage / server virtualization (including VMware). The official web site for Storage Monkeys is http://www.StorageMonkeys.com

Owner: Tim Masters | 1,225 members | ShareJoin this group »

VMware Alumni

This group is for (current and) former employees of VMware. The purpose of the group is to maintain an online community, to share and exchange information, updates, requests, news, and assistance.

Owner: Kevin Epstein | 827 members | ShareJoin this group »

Cloud Computing

Cloud Computing

This is a group for people involved in new age of utility computing or Next Big Thing – Cloud Computing. Discussion is done through http://groups.google.ca/group/cloud-computing

Owner: Khaz Sapenov | 9,938 members | ShareJoin this group »

DataShaping Advanced Analytics

SAS, quant, biostatistics, statistics, data mining, web analytics, computer science, six sigma, econometrics, business intelligence, computational finance, AI, database modeling, operations research, machine learning, data analysis, data warehousing, risk management, cloud computing, text mining.

Owner: Vincent (L) Granville | 4,898 members | Share |Join this group »

Storage Professionals

Data Storage Professionals – SAN, NAS, CAS, DASD, Cloud Computing, Storage Virtualization. Blog: http://www.storagenerve.com, We follow products from manufacturers: EMC, HDS (Hitachi), HP, NetApp, 3Par, Data Domain, PillarData, VMware for Service, Support, Features, Jobs, Message Boards, Networking.

Owner: Devang Panchigar | 3,166 members | ShareJoin this group »

Cloud Storage

The Cloud Storage group was formed in order to provide a common ground for the introduction and advancement of cloud storage and computing technology

Owner: Reuven Cohen | 1,776 members | ShareJoin this group »

VM People Virtualization & Cloud Group

This is a group for Virtualization & Cloud Computing professionals to network and discuss industry related topics such as Virtualisation, VMware, Microsoft Hyper-V, Citrix Xen and more. Technical Q&A, News, and Recruitment are all supported and encouraged in this group.

Owner: Mike Hilton | 1,412 members | ShareJoin this group »

Cloud Networking

The Cloud Networking group was formed in order to provide a common ground for the introduction and advancement of cloud networking and distributed network computing technology

Owner: Reuven Cohen | 1,327 members | ShareJoin this group »

CloudCamp – Unconventional Cloud Computing

CloudCamp was formed in order to provide a common ground for the introduction and advancement of cloud computing.

Owner: Reuven Cohen | 1,144 members | ShareJoin this group »

Open Source Virtualization & Cloud Computing

This group is free for all. Virtualization For Everyone, like it ought to be! Here we will discuss about: – Community influenced innovation – Heterogeneous hypervisor aware data centers – Hybrid Clouds – CDP (Continuous Data Center Protection)

Owner: Tarry Singh | 951 members | ShareJoin this group »

Open GRID

This is a group to promote the intersection of open source, open standards, cloud, grid, mesh, portable data, semantic web, web services and high performance computing.

Owner: Ed Dodds | 897 members | ShareJoin this group »

Cloud Computing Interoperability Forum (CCIF)

CCIF is an open, vendor neutral, community of technology advocates, and consumers dedicated to driving the rapid adoption of global cloud computing services. CCIF shall accomplish this by working through the use open forums (physical and virtual) focused on building community consensus.

Owner: Reuven Cohen | 553 members | ShareJoin this group »

The Who’s Who of Storage Blogosphere

March 9th, 2009 12 comments

The Storage blogging community is pretty small and everyone knows each other, may be as competition or as buddies or as colleagues or as collaboration partners or as consultants or as customers or as guest speakers or as independent storage experts. But over and over you get to meet these fine people talking about Storage and the components (internal / external) that drive the data storage industry.

In an effort to bring every storage blogger’s sites and feeds together, here are some results from the reformatted outputs of OPML files.

If you are not following some of them, here is the chance to do so. If somehow your blog is not here, please send me an email or DM me on twitter @storagenerve and will get your blog added. I have checked most of the feeds and blog sites to make sure there are not broken links.  

Hope this serves as another layer of exposure for the fine storage bloggers out there.

Please use the link: TO SUBSCRIBE TO STORAGENERVE BLOG
 

(Revision 11 of this Post, added a few more blogs: 03/10/09, 8:18 PM)

 

Title of Blog: 50Micron.com
Author:  50Micron.com
Type of Feed: RSS
Subscribe to Feed: 
http://www.50micron.com/?feed=RSS2
Blog Site Address: 
http://www.50micron.com
Notes:

 

Title of Blog: Anil Gupta, Random thoughts by Anil Gupta
Author:  Anil Gupta
Type of Feed: RSS
Subscribe to Feed: 
http://blog.andirog.com/feeds/posts/default
Blog Site Address: 
http://blog.andirog.com/
Notes: I dont see a lot of posts by Anil, but he surely is on a lot of blogroll’s. 

 


Notes: Virtualization Expert, Scott Lowe 
Title of Blog: blog.scottlowe.org
Author:  blog.scottlowe.org
Type of Feed: RSS
Subscribe to Feed: 
http://blog.scottlowe.org/feed/
Blog Site Address: http://blog.scottlowe.org
Notes: Virtualization Expert, Scott Lowe

 

Title of Blog: Blog Stu
Author: Blog Stuart Miniman
Type of Feed: RSS
Subscribe to Feed:  http://feeds2.feedburner.com/BlogStu
Blog Site Address: 
http://nohype.tumblr.com/
Notes: EMC

 

Title of Blog: StorageVirtualization
Author: Barry Whyte
Type of Feed: RSS
Subscribe to Feed:
http://www.ibm.com/developerworks/blogs/rss/storagevirtualization?flavor=rssdw
Blog Site Address:
http://www.ibm.com/developerworks/blogs/page/storagevirtualization
Notes: IBM, SVC Technology

 

Title of Blog: Breathing Data
Author:  Breathing Data Type of Feed: RSS
Subscribe to Feed: 
http://breathingdata.com/?feed=RSS2
Blog Site Address: 
http://breathingdata.com
Notes: Ed is also an author at GestaltIT.com

 

Title of Blog: B. Stephen Brunner’s IT Storage Blog
Author: B. Stephen Brunner’s IT Storage Blog
Type of Feed: RSS
Subscribe to Feed: http://storageblog.typepad.com/storage_blog/atom.xml
Blog Site Address:  
http://storageblog.typepad.com/storage_blog/
Notes:

 

Title of Blog: Brian’s Power Windows Blog
Author:  Brian’s Power Windows Blog
Type of Feed: RSS
Subscribe to Feed: 
http://powerwindows.wordpress.com/feed/
Blog Site Address: 
http://powerwindows.wordpress.com
Notes: EMC. This blog talk about EMC and Windows, the FUSION. Brian Henderson

 

Title of Blog: Christopher Kusek, Technology Evangelist
Author:  Christopher Kusek, Technology Evangelist
Type of Feed: RSS
Subscribe to Feed: 
http://www.pkguild.com/feed/
Blog Site Address: 
http://www.pkguild.com
Notes: Twitter buddy 
@CXI. NetApp


Title of Blog: Chuck Hollis – EMC
Author:  Chuck Hollis – EMC
Type of Feed: RSS
Subscribe to Feed:
http://chucksblog.emc.com/chucks_blog/atom.xml
Blog Site Address: 
http://chucksblog.emc.com/chucks_blog/
Notes: EMC, “THE MAN WITH THE PLAN”

 

Title of Blog: Claus Mikkelsen’s Blog
Author: Claus Mikkelsen’s Blog
Type of Feed: RSS
Subscribe to Feed:    http://blogs.hds.com/claus/feed
Blog Site Address:  
http://blogs.hds.com/claus
Notes: HDS

Title of Blog: Contemplating IT
Author: Tony Asaro
Type of Feed: RSS
Subscribe to Feed:  http://contemplatingit.com/blogs/blog1.php?tempskin=_rss2
Blog Site Address: 
http://contemplatingit.com/blogs/blog1.php
Notes: One fine writer…..


Title of Blog: Data Storage – RSS Feeds
Author:  Data Storage – RSS Feeds
Type of Feed: RSS
Subscribe to Feed:
http://RSSnewsapps.ziffdavis.com/eweekstorage.xml
Blog Site Address: 
http://www.eweek.com
Notes: IT Magazine

 

Title of Blog: Dave Talks Shop
Author:   Dave Talks Shop
Type of Feed: RSS
Subscribe to Feed:  http://feeds.feedburner.com/DaveTalksShop
Blog Site Address: 
http://www.davidkspencer.com
Notes: EMC.

 

Title of Blog: David Merrill’s Blog
Author: David Merrill’s
Blog Type of Feed: RSS
Subscribe to Feed: 
http://feeds.feedburner.com/hds/david
Blog Site Address: 
http://blogs.hds.com/david
Notes: HDS. Love the Economics behind Storage, highly recommended

 

Title of blog: Stop the Data Management Insanity
Author: David West of CommVault
Type of feed: RSS
Subscribe to feed:  http://news.commvault.com/DavidWest/rss.xml
Blog site address: 
http://news.commvault.com/DavidWest/ 
Notes: 


Title of Blog: Drunken Data – Jon Toigo
Author: Drunken Data – Jon Toigo
Type of Feed: RSS
Subscribe to Feed: 
http://www.drunkendata.com/?feed=RSS2
Blog Site Address: 
http://www.drunkendata.com
Notes:

Title of Blog: EMC Storage Info – Diwakar
Author: EMC Storage Info – Diwakar
Type of Feed: RSS
Subscribe to Feed: http://www.emcstorageinfo.com/feeds/posts/default
Blog Site Address: 
http://www.emcstorageinfo.com
Notes: Buddy of mine…..good EMC stuff

Title of Blog: Extensible NetApp: Thinking outside of the box
Author: Extensible NetApp: Thinking outside of the box
Type of Feed: RSS
Subscribe to Feed: http://blogs.netapp.com/extensible_netapp/atom.xml
Blog Site Address: 
http://blogs.netapp.com/extensible_netapp
Notes: NetApp Bloggers need to start adding other OEM bloggers to the blogroll…


Title of Blog: Flickerdown – Dave Graham
Author: Flickerdown – Dave Graham
Type of Feed: RSS
Subscribe to Feed:
http://feeds.feedburner.com/DaveGrahamsWeblog
Blog Site Address: 
http://flickerdown.com
Notes: EMC. Twitter buddy 
@davegraham, great cloud computing info

 

Title of Blog: Gestalt IT» Server Virtualization Archives – Gestalt IT
Author: Gestalt IT» Server Virtualization Archives  – Gestalt IT
Type of Feed: RSS
Subscribe to Feed:
http://feeds.gestaltit.com/GestaltIT_Virtualization
Blog Site Address: 
http://gestaltit.com
Notes: Virtualization 360

 

Title of Blog: Gestalt IT» Storage Archives  – Gestalt IT
Author: Gestalt IT» Storage Archives  – Gestalt IT
Type of Feed: RSS
Subscribe to Feed: 
http://feeds.gestaltit.com/GestaltIT_Storage
Blog Site Address: 
http://gestaltit.com
Notes: The A to Z of Storage

 

Title of Blog: Geographically Dispersed Clustering
Author: Geographically Dispersed Clustering
Type of Feed:  RSS
Subscribe to Feed:  
http://msmvps.com/blogs/jtoner/rss.aspx
Blog Site Address:  
http://msmvps.com/blogs/jtoner/default.aspx
Notes: Windows and Storage……

 

Title of Blog: Hu Yoshida – HDS
Author: Hu Yoshida – HDS
Type of Feed: RSS
Subscribe to Feed: 
http://blogs.hds.com/hu/feed/
Blog Site Address: 
http://blogs.hds.com/hu
Notes: HDS. A gentleman in true sense…good writing

 

Title of Blog: Information Playground
Author: Information Playground
Type of Feed: RSS
Subscribe to Feed:
http://stevetodd.Typepad.com/my_weblog/RSS.xml
Blog Site Address: 
http://stevetodd.Typepad.com/my_weblog
Notes: Steve Todd, EMC. I have left several comments on Steve’s Blog, but never published?  I am not sure, why…….

 

Title of Blog: Inside System Storage – IBM
Author: Inside System Storage – IBM
Type of Feed: RSS
Subscribe to feed:
http://www.ibm.com/developerworks/blogs/rss/InsideSystemStorage?flavor=rssdw
Blog Site Address:
http://www.ibm.com/developerworks/blogs/page/InsideSystemStorage
Notes: IBM. Good discussion topics…..Tony just looks a very happy man…

Title of Blog: Joerg’s Storage Blog
Author: Joerg’s Storage Blog
Type of Feed: RSS
Subscribe to Feed:  http://feeds2.feedburner.com/JoergsStorageBlog
Blog Site Address:   http://joergsstorageblog.blogspot.com/
Notes: Author from GestaltIT.com

 

Title of Blog: NetApp – Dave’s Blog
Author: NetApp – Dave’s Blog
Type of Feed: RSS
Subscribe to Feed: 
http://blogs.netapp.com/dave/RSS.xml
Blog Site Address: 
http://blogs.netapp.com/dave
Notes: NetApp. Prime example of a high profiled engineer turned to management

 

Title of Blog: NetApp – Exposed
Author: NetApp – Exposed
Type of Feed: RSS
Subscribe to Feed: 
http://blogs.netapp.com/exposed/RSS.xml
Blog Site Address: 
http://blogs.netapp.com/exposed
Notes: NetApp. Mafia?????, just kidding!!! Great Blog…..Val does a great job of defending and many times playing offensive for NetApp.

 

Title of Blog: NetApp – Eisler’s NFS Blog
Author: NetApp – Eisler’s NFS Blog
Type of Feed: RSS
Subscribe to Feed: 
http://blogs.netapp.com/eislers_nfs_blog/rss.xml
Blog Site Address:  
http://blogs.netapp.com/eislers_nfs_blog
Notes: NetApp

 

Title of Blog: Network World on Storage
Author: Network World on Storage
Type of Feed: RSS
Subscribe to Feed:
http://www.networkworld.com/RSS/storage.xml
Blog Site Address: 
http://www.nwfusion.com/topics/storage.html
Notes: Another IT Magazine

 

Title of Blog: Online Storage Optimization
Author: Online Storage Optimization
Type of Feed: RSS
Subscribe to Feed: 
http://onlinestorageoptimization.com/?feed=RSS2
Blog Site Address: 
http://onlinestorageoptimization.com
Notes:

 

Title of Blog: Pack Rat – Stephen Foskett
Author: Pack Rat – Stephen Foskett
Type of Feed: RSS
Subscribe to Feed:
http://feeds.fosketts.net/StephenFoskettPackRat
Blog Site Address: 
http://blog.fosketts.net
Notes: The MVP, great Blog, GestaltIT.com author

 

Title of Blog: Pillar Data Systems Blog
Author: Pillar Data Systems Blog
Type of Feed: RSS
Subscribe to Feed:
http://feeds.feedburner.com/typepad/pillardata/pillar_data_blog
Blog Site Address: 
http://blog.pillardata.com/pillar_data_blog/
Notes: Pillar Data. Great to see how top management leverages blogging in today’s world to offer insight and vision into the industry

 

Title of Blog: Rupturedmonkey
Author: Rupturedmonkey
Type of Feed: RSS
Subscribe to Feed: 
http://blogs.rupturedmonkey.com/?feed=RSS2
Blog Site Address: 
http://blogs.rupturedmonkey.com
Notes: Nigel…..great technical blog, I am not sure why he doesn’t work for HDS.

Title of Blog: Steve’s IT Rants
Author: Steve’s IT Rants
Type of Feed: RSS
Subscribe to Feed:   http://esgblogs.typepad.com/steves_it_rants/rss.xml
Blog Site Address:  
http://esgblogs.typepad.com/steves_it_rants/
Notes: ESG

 

Title of Blog: Storage Monkeys
Author: Storage Monkeys
Type of Feed: RSS
Subscribe to Feed:
http://blogs.storagemonkeys.com/index.php/feed
Blog Site Address: 
http://blogs.storagemonkeys.com
Notes: If you haven’t joined Storage Monkey as a user yet, it’s high time now…

 

Title of Blog: Storagebod’s Blog
Author: Storagebod’s Blog
Type of Feed: RSS
Subscribe to Feed:
http://storagebod.Typepad.com/storagebods_blog/RSS.xml
Blog Site Address:
http://storagebod.Typepad.com/storagebods_blog/
Notes: Not sure what to make of Martin, some days he is just so happy and some days he is ready to beat every storage vendor out there……..great Blog, love it. GestaltIT.com Author

 

Title of Blog: StorageIOblog
Author: StorageIOblog
Type of Feed: RSS
Subscribe to Feed: 
http://storageio.com/blog/?feed=RSS2
Blog Site Address: 
http://storageio.com/blog
Notes: The Green Man

 

Title of Blog: StorageMojo
Author: StorageMojo
Type of Feed: RSS
Subscribe to Feed: 
http://storagemojo.com/feed/RSS/
Blog Site Address: 
http://storagemojo.com
Notes: Robin Harris, one of the most popular storage blogs

 

Title of Blog: StorageNerve
Author: StorageNerve
Type of Feed: RSS
Subscribe to Feed:
http://feeds2.feedburner.com/datastorageprofessionals-wiki
Blog Site Address: 
http://www.storagenerve.com/
Notes: That’s me, Devang. GestaltIT.com Author

 

Title of Blog: Storage Sanity
Author: Storage Sanity
Type of Feed: RSS
Subscribe to Feed:    http://feeds2.feedburner.com/StorageSanity
Blog Site Address:  
http://storagesanity.blogspot.com/
Notes:

 

Title of Blog: StorageRap
Author: StorageRap
Type of Feed: RSS
Subscribe to Feed: 
http://feeds.storagerap.com/storagerap.com
Blog Site Address: 
http://www.storagerap.com
Notes: 3Par, Marc Farley. I nominate him for the American Funny Storage Videos (AFSV), not sure how he gets these video concepts……

 


Title of Blog: Storage Soup
Author: Storage Soup
Type of Feed: RSS
Subscribe to Feed: 
http://itknowledgeexchange.techtarget.com/storage-soup/feed/
Blog Site Address: 
http://itknowledgeexchange.techtarget.com/storage-soup
Notes:

 

Title of Blog: Storagezilla
Author: Storagezilla
Type of Feed: RSS
Subscribe to Feed:
http://storagezilla.Typepad.com/storagezilla/RSS.xml
Blog Site Address: 
http://storagezilla.Typepad.com/storagezilla
Notes: EMC. Not sure what to make of Storagezilla, yet I see so many different sides of him. It does seems between Mark, Chuck and Barry B they all jump in and help each other on the blogs all the time….great teamwork.

 

Title of Blog: The Backup Blog
Author: The Backup Blog
Type of Feed: RSS
Subscribe to Feed:  
http://feeds2.feedburner.com/typepad/AEBl
Blog Site Address: 
http://thebackupblog.typepad.com/thebackupblog
Notes:

 

Title of Blog: The SAN Technologist
Author: The SAN Technologist
Type of Feed: RSS
Subscribe to Feed: 
http://thesantechnologist.com/?feed=RSS2
Blog Site Address: 
http://thesantechnologist.com
Notes: Dell. No posts after Oct 08?

 

Title of Blog: the storage anarchist
Author: the storage anarchist
Type of Feed: RSS
Subscribe to Feed:
http://thestorageanarchist.Typepad.com/weblog/RSS.xml
Blog Site Address:
http://thestorageanarchist.Typepad.com/weblog
Notes: EMC. Barry Burke aka B^ aka TSA: The storage anarchist, “THE STRATEGY BEHIND SYMMETRIX”

 

Title of Blog: The Storage Architect
Author: The Storage Architect
Type of Feed: RSS
Subscribe to Feed: 
http://thestoragearchitect.com/feed
Blog Site Address: 
http://thestoragearchitect.com
Notes: my buddy Chris M. Evans…… great topics of discussion, in true sense a storage architect. Highly recommended reading, GestaltIT Author

 

Title of Blog: ThinkStorage XiV – IBM
Author: ThinkStorage XiV – IBM
Type of Feed: RSS
Subscribe to Feed: 
http://www.xivstorage.com/blog/feed
Blog Site Address: 
http://www.xivstorage.com/blog
Notes: IBM – XiV

 

Title of Blog: Tony Asaro’s Blog Bytes
Author: Tony Asaro’s Blog Bytes
Type of Feed: RSS
Subscribe to Feed: 
http://feeds.hds.com/hds/tony-asaro
Blog Site Address: 
http://blogs.hds.com/tony
Notes: HDS. Love the last series of mlogs (the multimedia blogs)

 

Title of Blog: Virtual Geek – EMC
Author: Virtual Geek – EMC
Type of Feed: RSS
Subscribe to Feed:
http://virtualgeek.Typepad.com/virtual_geek/atom.xml
Blog Site Address: 
http://virtualgeek.Typepad.com/virtual_geek/
Notes: Chad Sakac. Vmware and EMC expert, great technical information on the blog

 

Title of Blog: NetApp – The Missing Shade of Blue
Author: NetApp – The Missing Shade of Blue
Type of Feed: RSS
Subscribe to Feed:  
http://blogs.netapp.com/shadeofblue/rss.xml
Blog Site Address:  
http://blogs.netapp.com/shadeofblue
Notes: NetApp

 

Title of Blog: NetApp – The Virtual Storage Guy
Author: NetApp – The Virtual Storage Guy
Type of Feed: RSS
Subscribe to Feed: 
http://blogs.netapp.com/virtualstorageguy/rss.xml
Blog Site Address:  
http://blogs.netapp.com/virtualstorageguy
Notes: NetApp

 

Title of Blog: blog.virtualtacit.com
Author: blog.virtualtacit.com
Type of Feed: RSS
Subscribe to Feed: 
http://feeds2.feedburner.com/Blogvirtualtacitcom
Blog Site Address:  
http://blog.virtualtacit.com
Notes: Looking for Recovery Point info, you will find it all here…

 

Title of Blog: VM /ETC
Author: VM /ETC
Type of Feed: RSS
Subscribe to Feed:  
http://feeds2.feedburner.com/vmetc
Blog Site Address:  
http://vmetc.com
Notes: Rich Brambley, Virtualization Expert and GestaltIT author



Title of Blog: Cinetica Blog
Author: Enrico Signoretti
Type of Feed: RSS
Subscribe to Feed:  
http://blogs.cinetica.it/cinetica/feed/
Blog Site Address:  
http://blogs.cinetica.it/cinetica/
Notes: 

 

Title of Blog: WAFL – A Technical Diary
Author: WAFL – A Technical Diary
Type of Feed: RSS
Subscribe to Feed: 
http://www.wafl.co.uk/?feed=RSS2
Blog Site Address: 
http://www.wafl.co.uk
Notes: Chris Kranz. If you are looking for Technical Information on NetApp Platforms related to OnTap, you will find it here….

 

Title of Blog: The Register
Author: 
Type of Feed: RSS
Subscribe to Feed:  http://www.theregister.co.uk/hardware/storage/headlines.atom
Blog Site Address: 
http://www.theregister.co.uk/hardware/storage/
Notes: Very good stuff, Chris Mellor writes amazing. 

 

Title of Blog: Zerowait High Availability Blog
Author: Zerowait High Availability Blog
Type of Feed: RSS
Subscribe to Feed:
http://zerowait.blogspot.com/feeds/posts/default?alt=RSS
Blog Site Address: 
http://zerowait.blogspot.com
Notes: How a SMB leverages blogging to compete against a giant like NetApp in after warranty hardware maintenance…….. 


This is a pretty long list of Storage Bloggers, but you might still find some that I might have not covered. Here are some additional links you might want to explore. 



List of All EMC Bloggers: http://www.emc.com/community/index.htm

List of All NetApp Bloggers: http://www.netapp.com/us/communities/communities-blogs.html

HP Blogs: http://www.communities.hp.com/online/blogs/datastorage/default.aspx

List of All HDS Bloggers: http://blogs.hds.com/

Compellent Blogs: http://www.compellent.com/blog/

Emulex Blogs: http://www.emulex.com/blog/

BlueArc Social Media: http://www.bluearc.com/html/news/social.shtml

Object Matrix Blogs www.object-matrix.com Blog : www.matrixstore.net 

Gestalt IT (An Independent IT Commentary) is born

March 5th, 2009 No comments

Gestalt IT, an independent IT Commentary for readers related to IT industry. With years of experience from various Bloggers in the Virtualization, Storage, Networking and Desktop space, they have all come together to present the world a complete 360 vision into today’s complex IT environments.

As you all know, these days IT environments have specific requirements related to Security, Networking, Compliance, Storage, Desktops, Tiering, Replication, Virtualization, Efficiency, Utilization, Applications, Green Data Center Requirements, Power and many more on the list. On Gestalt IT you will find information related to these topics covered by Industry leaders and bloggers that will allow you to read about these trends and topics.

This magazine is for CIO’s, Infrastructure Directors, Data Center Managers, IT venture capitalist, Data Storage Analyst, Virtualization Experts, OEM Bloggers, OEM Marketing Folks and foremost engineers, administrators and general public. As we all cover industry specific topics, during these discussions you will see information related to OEM’s and their products / services. Some of the major ones we all talk about these days is Cisco, EMC, Sun, HP, IBM, HDS, NetApp, 3Par, Compellent, Data Domain, VMware, Xen, etc.

We all know, DIVIDED we FALL and UNITED we STAND. The power these 8 authors bring to the table is phenomenal. Each one of us comes from a specific industry or area of expertise and collectively as we collaborate on topics and vision, we can offer a reader complete insight into today’s IT infrastructure.

You can visit and bookmark the site address for Gestalt IT.

http://www.GestaltIT.com

Run a WORDLE analysis on Gestalt IT and you will see the power behind the specific industry topics that are discussed. Storage still seems to be a great point of emphasis among the most of us, but that said, a lot of topics are discussed around networking, virtualization and foremost the technical’s behind these technologies.

To read a post about Gestalt IT from Stephen Foskett, click here.

So what is Gestalt: An organized field having properties that cannot be derived from the sum of component parts; a unified whole.

Today each of us blogs independently as well, we get website hits that probably vary from several hundred to thousands a day. We have a set of readers we get every day and some exposure on search engines like Google and Yahoo. But is that it…..
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Looking at the benefits of Gestalt IT, the exposure a reader gets in terms of overall IT Industry is far better than individual blogs themselves. In the future you will see each writer will be publishing post – articles exclusively for Gestalt IT. There is a lot of behind the scene collaboration going on with all the authors.

So who are these Authors…..

From Gestalt IT, here are their profile views.

Chris Evans

http://thestoragearchitect.com/

Chris M Evans is an independent consultant with over 20 years’ experience, specializing in storage infrastructure design and deployment.

Devang Panchigar (myself)

http://www.storagenerve.com/

With more than 7 Years of IT experience, Devang is currently the Director of Technology Solutions and IT Operations at Computer Data Source, Inc. Devang has held several positions in the past including Sr. Systems Engineer, Sr. Network Engineer, Technical Support Manager, Director of Storage Support & Operations. He has been responsible for creating and managing worldwide technical support teams, technology solutions team, operations management, service delivery, pre and post sales support, marketing and business planning. In his current role Devang oversees multiple aspects of the Technology Solutions Group that works with various Multinational and Fortune 500 companies providing them infrastructure services. Along with various industry certifications, Devang holds a Bachelor of Science from South Gujarat University, India and a Master of Science in Computer Science from North Carolina A&T State University.

Ed Saipetch

http://breathingdata.com

Ed Saipetch is virtualization practice lead and systems engineer. He has been and both the end user and value added reseller space with a focus on application infrastructure and web architecture scalability.

Joerg Hallbauer

http://joergsstorageblog.blogspot.com/

I am a long time data center denizen who currently focuses on storage and storage related issues. I have worked on both sides of the fence, for vendors as well as being the guy who had to implement what they sold me. Finally, I’ve managed teams of UNIX, Windows, and Storage Admins.

Martin Glassborow

http://storagebod.typepad.com/

To view Martin Glassborow’s Linkedin Profile click here

Rich Brambley

http://vmetc.com

To view Rich Brambley’s Linkedin Profile click here

Scott Lowe

http://blog.scottlowe.org

As a 15+ year veteran in the Information Technology field, I’ve done quite a few different things. I’ve worked as an instructor, a technical trainer and Microsoft Certified Trainer (MCT), systems administrator, IT manager, systems engineer, consultant, and Chief Technology Officer for a small start-up. Currently, I work with a national VAR/reseller as a technical lead specializing in virtualization and virtualization technologies. I also contribute content to SearchVMware.com and SearchServerVirtualization.com.

Stephen Foskett

http://blog.fosketts.net

Stephen Foskett has provided vendor-independent end user consulting on storage topics for over 10 years. He has been a storage columnist and has authored numerous articles for industry publications. Stephen is a popular presenter at industry events and recently received Microsoft’s MVP award for contributions to the enterprise storage community. As the director of Contoural’s data practice, Foskett oversees the group that provides strategic consulting to assist Fortune 500 companies in aligning their storage and computing infrastructures with their business objectives. He holds a bachelor of science in Society/Technology Studies, from Worcester Polytechnic Institute.

A variety of topics and discussions are always on going at Gestalt IT at any given time, there are quite a few new features and enhancements that are upcoming for readers. Also after visiting several other IT magazines, one theme that draws me away from them is the excessive ad campaigns they run on the sites to make money. In the thirst to make money, a user probably goes through 10 clicks to read an article as he is juggling between pop ups and ads.


With Gestalt IT, you are assured of the clean view each and every time. A lot of authors on Gestalt IT come from various industry practices and have been major contributors in specific fields including other IT magazines.


You will see new posts coming from myself as well as from my fellow authors covering specific industry topics. You will also get a chance to read many topics that are being collaborated by multiple authors with different technological background and expertise.


Again, highly recommend visiting and bookmarking the site, here are preferred methods of subscribing to RSS Feeds at Gestalt IT.

http://feeds.gestaltit.com/GestaltIT_Networking

http://feeds.gestaltit.com/GestaltIT_Storage

http://feeds.gestaltit.com/GestaltIT_Desktop

http://feeds.gestaltit.com/GestaltIT_Virtualization

Any questions, please feel free to drop me a line on Twitter @storagenerve


Also if you feel you can contribute to the content of Gestalt IT, please feel free to email me or twit me.

EMC Symmetrix DMX – RAID 6 Implementation

February 27th, 2009 2 comments

EMC has been a market leader in bringing new innovative technology to the IT forefront. With the usage of RAID 6, EMC has again taken a very unique approach in designing this technology for its Symmetrix DMX products.


EMC has been a little late in adaption of RAID 6 for its products, not until recently did EMC introduce RAID 6 on its DMX-4 platform with 5773 version of Microcode. With RAID 6 and the large SATA drives, now the possibility of double failures in the same RAID group is considered a high probability and for that reason EMC has embraced the RAID 6 technology for all its mid-tier and enterprise level products…..Oh and also under a lot of pressure from competition and customers.

In this post we will uniquely talk about EMC’s modification of RAID 6 technology on EMC Symmetrix DMX products and how it redefined data protection on this platform.

In the next upcoming post, we might talk about RAID 6 as it relates to EMC Clariion and IBM Storage.

Here are links to some previous post related to RAID 6 technology.

SUN StorageTek’s RAID 6

HP’s RAID 6

NetApp’s RAID–DP

Hitachi’s (HDS) RAID 6

Different RAID Technologies (Detailed)

Different RAID Types

EMC’s Business Case

RAID 6 is now available on EMC Symmetrix DMX products with microcode version 5773 and on EMC Clariion products with Flarecode release 26.

EMC Symmetrix DMX products are known to support RAID 1, RAID 10, RAID 1+0, RAID 5 (3+1), RAID 5 (7+1) and about 2 years ago introduced RAID 6 (6+2), RAID 6 (14+2).

With RAID 6 (6+2) technology, there are 6 data drives and 2 parity drives totaling 8 drives.

With RAID 6 (14+2) technology, there are 14 data drives and 2 parity drives totaling 16 drives.

RAID 5 has been common practice since the last 10 to 15 years for various storage and server based products. Back in the days, drive sizes varied from 4GB disk to 146GB SCSI or Fiber (which included various different sizes like 4.3GB, 9GB, 18GB, 36GB, 50GB, 73GB and 146GB). These days, seldom you see these size drives, customers are talking about disk sizes that are minimum 300GB (FC or SATA) and go up to 1TB. Over the next 2 to 3 years, we will absolutely see disk sizes that will be between 3TB to 4TB.

Here is an abstract about traditional RAID 6, again every manufacturer tends to change it a bit based on the products they release for performance and reliability.

Technology: Striping Data with Double Parity, Independent Data Disk with Double Parity

Performance: Medium

Overhead: 10% to 30% overhead, with additional drives you can bring down the overhead.

Minimum Number of Drives: 4

Data Loss: With one drive failure and two drive failures in the same Raid Group no data loss.

Advantages: RAID 6 is essentially an extension of RAID 5 which allows for additional fault tolerance by using a second independent distributed parity scheme (two-dimensional parity). Data is striped on a block level across a set of drives, just like in RAID 5, and a second set of parity is calculated and written across all the drives; RAID 6 provides for an extremely high data fault tolerance and can sustain multiple simultaneous drive failures which typically makes it a perfect solution for mission critical applications.

Disadvantages: Poor Write performance in addition to requiring N+2 drives to implement because of two-dimensional parity scheme.

We have in the past also discussed probability and failure rates (data loss situations) with RAID 5 and RAID 6. Please see the link below

Hitachi’s (HDS) RAID 6

To talk about some stats, the probability or the percentage of exposure related to RAID 5 double failures is as much as 7.5% while the chance of triple failure in a RAID 6 configuration is 0%. As the drive sizes are increasing, the usage of RAID 6 will become more prominent.


EMC’s Technology

RAID 6 as discussed earlier is a new technology introduced by EMC for Symmetrix DMX-4 products.

The actual definition of RAID 6 by EMC is “Any configuration that supports more than a single drive failure”.

Flash drives (EFD) also support RAID 6, only requirement is every drive in the RAID Group be a Flash drive (EFD). Also with RAID 6, permanent sparing is usable and incase of non availability of permanent sparing, dynamic spare pools are used for data reconstruction.

Default Track size on DMX-4 platform is 64K out of which each chuck of 4K is striped on each drive in the RAID Group.


As explained earlier, there are two supported versions of RAID 6 on EMC Symmetrix DMX platform.

RAID 6 (6D+2P) meaning 6 data drives and 2 parity drives. The overhead in this situation will be 25% [(2*100)/(6+2)].

RAID 6 (14D + 2P) meaning 14 data drives and 2 parity drives. The overhead in this case will be 12.5% [(2*100)/(14+2)].

We have discussed in the past blogs about how other OEM’s leverages RAID 6 on their storage platforms to make it faster and efficient. EMC’s version of RAID 6 is just very unique compared to any of the OEM’s I have discussed in the past.

HP’s version of RAID 6 is called RAID 6 ADG (Advanced Data Guarding)
Netapp’s version of RAID 6 is called RAID-DP (Raid Dual Parity)
HDS, Sun and EMC’s version are pretty much called RAID 6 but again the implementation is pretty unique (in terms of algorithms behind this technology implementation) for all manufacturers.

Since this process is pretty complicated and it will be very hard to explain without video or bunch of mathematical formulas or a white board, we will add couple of diagrams to make a user follow certain color schemes for understanding the parity calculation.

The Parity calculation for EMC Symmetrix DMX platform for RAID 6 is based on an Even-Odd Algorithm.

The first set of Parity is called HP (Horizontal Parity), for the rest of this document we will address this as HP.

The second calculated Parity is called DP (Diagonal Parity), for the rest of this document we will address it as DP.


Horizontal Parity (HP) is exactly similar to how RAID 5 parity is calculated. Later in the document we will discuss how the actual calculations happen.

Diagonal Parity (DP) parity is calculated based on diagonal dataset. DP is made up of segments of data; also each DP skips a different data drive while it is being calculated. The idea is with one lost drive, HP is used to reconstruct, while with 2 drive failures both HP and DP will be used to reconstruct failed drives.

So far with me…………….

EMC Symmetrix DMX RAID 6 utilizes the famous Even-Odd Algorithm for calculating parity.

We will talk about Prime numbers here (prime numbers are numbers that are not divisible by anything other than themselves to yield an integer).

Some prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, …..

So for RAID 6 to work correctly, the number of drives we chose in the RAID group has to be a prime number (requirement of the Even-Odd algorithm).

With 6D + 2P we have 8 Drives in total

With 14D + 2P we have 16 drives in total

For consistency purposes, both the RAID Types above will need to have a set of drives that is a prime number; the closest number to 8 and 16 both is 17.

RAID 6D + 2P: 17 – 6D = 11 Null Drives.

RAID 14D + 2P: 17 – 14D = 3 Null Drives.

I know it’s getting too confusing…….think about the engineers that designed it, and think about everytime this is calculated for every set of data the customer generates and has to be written on RAID 6 disk.

All the null disk only have 0 as the data on it, in short the Null disk is also used to calculate the HP and DP, but in case one (Raid 6 6D+2P), all the data on 9 Null drives is 0 and in case 2 (RAID 6 14D+2P) all the data on 3 Null Drives is 0.

The Null drives do not physically consume any space, any drive, any memory, etc.

Below is a diagram that explains EMC Symmetrix DMX RAID 6 (6D+2P) implementation.


D1, D2, D3, D4, D5, D6 are Data Drives

D7 is HP (Horizontal Parity Drive)

D8 is DP (Diagonal Parity Drive)

Drives that have a label “No Drive” are Null Drives with 0 data on them.

Diagonal in color RED is the center diagonal row and is used to calculate every DP in this raid group.

Each track is 64K with 4K stripes

HP = add all D1, D2, D3, D4, D5, D6, all null devices (in a row). HP does not include DP. Answer you get is 26, correct?

DP = add all the center diagonal row in RED plus the diagonal row below it (yellow) to come up with DP for row 1. Answer you get is 44, correct?

Similarly do the following to calculate diagonal parity 2: Add the diagonal red row and all the elements of diagonal row in color orange and you obtain the answer of 43, correct?


So far with me………………..



Again for simplicity purposes we managed to add these, in real life they are calculated based on Exclusive OR (XOR).


The HP will be calculated as

HP = D1 XOR D2 XOR D3 XOR D4 XOR D5 XOR D6 XOR Null devices

DP = Null Drives XOR D6 (12) XOR D5 (13) XOR D4 (14) XOR D3 (15) XOR D2 (16) XOR Null Drives XOR D6 (13) XOR D5 (14) XOR D4 (15) XOR D3 (16) XOR D1 (1)

The information listed in ( ) are the row numbers. Follow the color scheme things will be much easy. Also see above in the equation (highlighted in yellow) how we skip D2 in this case, the reason is you skip a drive in case of double fault, so we can rebuild from HP first and then from DP)

Since this calculation is pretty intense, we have only calculated the first two DP rows for you to compare the results.

Below is a diagram that explains EMC Symmetrix DMX RAID 6 (14D+2P) implementation.


D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12, D13, D14 are Data Drives

D15 is HP (Horizontal Parity Drive)

D16 is DP (Diagonal Parity Drive)

Drives that have a label “No Drive” are Null Drives with 0 data on them.

Diagonal in color RED is the center diagonal row and is used to calculate every DP in this raid group.

Each track is 64K with 4K stripes

HP = add all D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12, D13, D14 and all null devices (in a row). HP does not include DP. Answer you get is 60, correct?

DP = add all the center diagonal row in RED plus the diagonal row below it (yellow) to come up with DP for row 1. Answer you get is 131, correct? span>

Similarly do the following to calculate diagonal parity 2: Add the diagonal red row and all the elements of diagonal row in color orange and you obtain the answer of 125, correct?


So far with me………….


Again for simplicity purposes we managed to add these, in real life they are calculated based on Exclusive OR (XOR).


The HP will be calculated as

HP = D1 XOR D2 XOR D3 XOR D4 XOR D5 XOR D6 XOR D7 XOR D8 XOR D9 XOR D10 XOR D11 XOR D12 XOR D13 XOR D14 XOR Null devices

DP = Null Drives XOR D14 (4) XOR D13 (5) XOR D12 (6) XOR D11 (7) XOR D10 (8) XOR D9 (9) XOR D8 (10) XOR D7 (11) XOR D6 (12) XOR D5 (13) XOR D4 (14) XOR D3 (15) XOR D2 (16) XOR Null Drives XOR D14 (5) XOR D13 (6) XOR D12 (7) XOR D11 (8) XOR D10 (9) XOR D9 (10) XOR D8 (11) XOR D7 (12) XOR D6 (13) XOR D5 (14) XOR D4 (15) XOR D3 (16) XOR D1 (1)

The information listed in ( ) are the row numbers. Follow the color scheme, things will be much easy. Also see above in the equation (highlighted in yellow) how we skip D2 in this case, the reason is you skip a drive incase of double fault, so we can rebuild from HP first and then from DP)

Since this calculation is pretty intense, we have only calculated the first two DP rows for you to compare the results.


Failure Scenario’s

One Disk failure and recovery: Exactly similar to a rebuilt that happens with RAID 5, simple process.

Two Disk failure and recovery: Both Horizontal Parity and Diagonal Parity are used to rebuild data track by track.

More than two Disk failure and recovery: Possible data loss (chances of these are 0%)

Some Specific EMC Symmetrix DMX RAID 6 features

Uses Single mirror to show its status, failure on a device in the RAID Group is denoted by different colors like Yellow for 1 member failure and red for 2 member failure and purple for 3 member failure (data loss).

DAF (Disk Directors) are used to perform XOR operations – calculations with parity generation and rebuild.

Support for MetaLUN’s that are RAID 6

Support for BCV’s that are RAID 6

Support for Optimizer with RAID 6

Support for SRDF with RAID 6

Support for Snaps with RAID 6

Support for DRV and LOG devices with RAID 6

Support for Concurrent copy with RAID 6

Support for Permanent Sparing and Dynamic Spare Pools with RAID 6

Support for EFD’s with RAID 6 (all drives in the Raid group have to be similar)

There is no sort of benchmarking data that is available on RAID 6 performance (for EMC Symmetrix DMX) when we relate to RAID 6 (6D+2P) and RAID 6 (14D+2P) with regards to performance overheads, rebuild times with comparative analysis to NetApp or Hitachi’s RAID 6 implementation.

Again it’s pretty amazing to see, EMC’s claim with RAID 6 is not about performance, since performance can be achieved through RAID 1+0 configs, the idea is only reliability. For the Clariion platform the rebuild of RAID 6 devices can take 10% more time than a normal RAID 5 or RAID 1+0 device, the Clariion uses the same Even-Odd Algorithm.

With my previous Blog post on NetApp’s RAID-DP, HDS’s RAID 6, HP’s RAID 6 ADG, Sun StorageTek’s RAID 6 and this time around EMC Symmetrix DMX’s RAID 6, no one other than NetApp (98% performance efficiency) claims their version of RAID-6 as a performance enhancer. All the vendors are pretty much offering it as a standard Dual Parity technology for realibility and data protection.

Courteous Comments always welcome.