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The Who’s Who of Storage Twitters

March 11th, 2009 2 comments

Twitter…Twitter…..Twitter…..that is all we hear these days….Time Magazine has been following it and recently published a big article on Twitter.

Many of our co-bloggers, co-workers, friends, family and now our better half’s are following us on twitter these days…..

Brian Henderson has an interesting blog article he just posted as I started writing this article. Here is the link.

There was a good post by David Spencer: Seven People to Follow on Twitter, here is the link.

On this post I do not want to talk about the advantages, disadvantages, etc, but rather focus this towards a list of Storage Centric Folks that are using twitter today.

This post is a continuation of my previous blog posts about various Storage Bloggers in the Blogosphere and about LinkedIn and the Storage/Virtualization Groups.

Twitter these days seems to be one of those social media outlets where Storage folks are spending a lot of time and energy to learn and push some new products and technologies. Here is a link to my previous post on Twitter (A micro blogging platform)

A blog post from Stephen Foskett from Dec 2008 and another one from Christopher Kusek from Feb 2009 discussing some storage folks using Twitter…


To follow me on Twitter http://www.twitter.com/storagenerve
There are some additional links that are pretty kool to get more information about your twittering habits.

To register on Twitter: http://www.twitter.com

TwitterSheep: http://twittersheep.com/ (This is funny, you should read it)

TwitterCounter: http://twittercounter.com (Good way to get your twitter stats)

TwitterFeed: http://twitterfeed.com (To Automate your blog post for Twitter)

TwitterGrader: http://twitter.grader.com/ (Get your twitter Grade, see your twits practices)

Twitter-Friends: http://twitter-friends.com/(Get a 360 about you and your twitter connections)

Twitter-Search: http://www.twittertroll.com/(To search topics on twitter, this is good search engine)

Twitter Wheel: http://www.tweetwheel.com (To see your tweet wheel, very interesting….)

Twitoria: http://twitoria.com/ (Great site to find your inactive twitter friends)

Twesents: http://twesents.com/ (Send a Twe to a friend….)

TwitterGroups: http://twittgroups.com/(Dont forget to check out the storage groups on TwittGroups)

Here are the Storage Twitters…….enjoy and add to your list..

Twitter Name Associations Name Notes
3parfarley 3Par Marc Farley aka. Storagerap, interesting twits..
abhinav_joshi NetApp Abhinav Joshi Rare twits, Technical
Akorri Akorri Lisa Crewe official
AnueSystems Anue official
astorrs Andrew Storrs
bensons Savvis Benson Schliesser
bgracely NetApp
bhendu EMC Brian Henderson Windows/EMC
bjgreenberg Brain Greenberg
BlueArc BlueArc official
bwahacker Mitch Haile Virtualization
bwhyte IBM Barry Whyte SVC Technology
Callero Calle
carlig HDS Carli seems to be the boss….
centernetworks Center Networks official
Chris_Mellor The Register Chris Mellor Interesting twits…
chrisgeb NetApp Chris Gebhardt
chrisjones77 Chris Jones You want to recover your data
chrismevans Chris Evans aka The Storage Architect
ChuckHollis EMC Chuck Hollis Recently joined and disappered
CimaMan John Alday
ckranz NetApp Chris Kranz
clifftrapp
Compellent Compellent Compellent official
contemplatingIT HDS (50%) Tony Asaro
ctnco EMC Edward Newman Active, good twits…
CXI NetApp Christopher Kusek he is up all night twitting…..
damienstevens Damien Stevens Cloud Com links every evenings
DaveGraham EMC Dave Graham Very Active, good twits…..
DavidKSpencer EMC David Spencer Happy Guy….
dell_storage Dell Dell Storage official
DellServerGeek Dell Scott Hanson Active twits…
dexin Could Computing
EdSai Ed Saipetch
embedded_guy Emulex Chris Hoffman
EMC EMC EMC Corp official
eric_sherrill Eric Sherill
esignoretti Enrico Signoretti
GestaltIT Gestalt IT Never miss
GlassHouse_Tech GlassHouse Rare Twits
gminks EMC Gina Minks
Gregorydwhite Dell Gregory White
HDSCorp HDS Hitachi Data Systems every new blog post, HDS twits.
IanHF Active user with broken toe???
ibmstorage IBM Raj Subramaniam
irsanw EMC Irsan Widarto
jdowson EMC Jim Dowson CTO, Global Services
JoleneHajj Emulex Jolene Hajj Emulex PR….
kccowan EMC Ken Cowan
Kostadis_Netapp NetApp Kostadis Roussos Opinionated….
LenDevanna EMC Len Devanna
Matt Povey HDS Matt Povey English guy in Australia….
menielsen Michael Nielsen
Moesch NetApp Michael Moeschler
mozy Mozy Mozy Online Backup official
mozybackup Mozy Mozy Backup official
NetApp NetApp NetApp official
nigelpoulton Nigel Poulton Technology….
onStorage NetApp Eric Pederson
Openrsm Openrsm OpenRSM Cloud official
optimizestorage Ocarina Networks official
Padmasree Cisco Padmasree Warrior CTO, Cisco Systems
PariseauTT Search Storage Beth Pariseau Good Tech Post
Polly Pearson EMC Polly Pearson EMC HR…
PSteege Seagate Pete Steege
qlogic Qlogic Qlogic official
SamMoulton NetApp Samantha Moulton
scott_lowe Scott Lowe Virtualization
scummins EMC Sean Cummins
SFoskett Stephen Foskett Active twitter…
sharney / Scott Harney Scott Harney
simon_elisha Simon Elisha
sshottan CTO, Storage Company
StarWindSAN StarWind StarWind official
SteveTodd EMC Steve Todd Opens up twitter during lunch
storageanarchy EMC Barry Burke MAN behind today’ Symmetrix
Storagebod Martin Glassborow Active twitter…
storageio Greg Schultz I see Green….
StorageMonkeys Tim Masters
StorageNerve Devang Panchigar Myself…..
storageswiss George Crump Active twitter…
storagewarrior
Storagezilla EMC Mark Twomey Active user he doesn’t sleep either
Stu EMC Stuart Miniman
sunmicrosystems SUN Sun official
sunshinemug Ocarina Networks great blog post these days….
tatat / tyler yuniarto Tyler Yuniarto
techmute Matt Davis
TheSANTechBlog Dell Steven Schwartz where are you now??
timbo_baggins IBM Tim Biller I am starting a band soon…
tracker619 EMC Mike Fishman CTO, Backup Platforms
valb00 NetApp Val The NetApp Agenda….
Vaughn_Stewart NetApp Vaughn Stewart
VicenteM EMC
VirtuallyNetapp NetApp Jack McLeod
virtualtacit Joe Kelly Recover Point…
virtualTodd Vmware Todd Muirhead The Guy who runs and runs….
vramaswamy HDS Vijay Ramaswamy
Wandster EMC Rich Wand
zorian StarWind Zorian Rotenberg CEO, StarWind

emulex Emulex     Official

cingulus Emulex                           VP Corp Marketing

msarrel Technologist
If you are an enterprise storage blogger or twitter, and your name is not on the list, please email me or DM me on Twitter @storagenerve, will get you added to the list. At all times want to keep this listed updated.

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 

NetApp’s RAID-DP (Enhanced RAID 6)

February 11th, 2009 4 comments

Continuing the quest on RAID 6, with my previous post related to HDS’s RAID 6, here is a post about NetApp’s RAID-DP (Double Parity – Enhanced RAID 6). In some upcoming posts, we will talk about RAID 6 technology and its usage by EMC and HP. If possible will try to write the final post on comparison between each of the OEM products and how they have leverage the use of RAID 6 technology.


The following are links to my previous posts about RAID Technology

Hitachi’s RAID 6

Raid Technology Continued

Raid Types

NetApp Business Case

Similar to HDS; NetApp’s argument have been about the usage of high capacity disk drives that are FC and SATA (250GB, 300GB, 450GB, 500GB, 750GB and 1TB) which takes quite long time to rebuild and have higher failure rates. During these times the RAID Group might hit a MEDR (Media Errors During Reconstruction) and further cause a complete halt of data rebuild, possibly creating a DL (data loss) situation.


As you know the parity information that is stored on the disk is used to reconstruct the data on the new replaced drive. The time to replace the failed disk plus the time to reconstruct the data can be between 4 hours to 30 hours for these larger drives. It is a high probability, that during these times, there might be a hiccup with a bad sector/block or a legitimate drive failure in the same raid group, which can further cause data loss. The graphs related to the failure probability are in the later part of the post.


With the usage of RAID 6 (RAID-DP), two drive failures in the same RAID group can occur without data loss. NetApp is traditionally known to support RAID 0, RAID 1+0, RAID 4, and now RAID 6 (RAID-DP). The RAID 6 adaptation by NetApp comes in 2006 after HDS’s and HP’s offering to their customers.

Here is a little extract about RAID 4 (Widely used with NetApp)

Technology: Block level parity

Performance: Medium

Data Loss: With one drive failure, no data loss. With multiple drive failures in the same Raid group data loss is imminent.

Advantages: It has the highest Read data transaction rate and with a medium write data transaction rate. Data is stripped on disk creating high efficiency along with a good aggregate transfer rate. Parity is stored on a separate disk.

Disadvantages: Disk failure has medium impact on throughput. Often difficult to rebuild in the event of a disk failure (as compared to RAID level 1) and individual block data transfer rate same as single disk.

Here is an extract about RAID 6 (Remember RAID 6 is not exactly RAID-DP. RAID-DP is an adapted version by NetApp)

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

Performance: Medium

Overhead: 20% to 30% overhead, with additional drives you can bring down the overhead.

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 4 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 4, 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.

Because of the low performance of RAID 6 related to random writes, NetApp has modified the RAID 6 technology and incorporated it into its DATA ONTAP OS as RAID-DP (Double Parity) system. The big pitch from NetApp about Double Parity is, they get better Performance, less overhead and is Cost Effective Capacity Utilization. OEM’s tend to modify RAID technology to better suite their products or enhance it based on factors like speed, rebuild times, efficiency, etc.

RAID-DP is available with NetApp Data ONTAP Operating System version 6.5 and above and is offered across all different NetApp Series of Platforms. There is no added licensing, configuration, special hardware requirements with RAID-DP.

NetApp’s published data loss stats show the following with RAID 5 and RAID-DP.


The data protection offered with RAID-DP is 3800 times better than the closest competition which is RAID 5.

NetApp RAID-DP Technology

RAID-DP is a double parity protection in a RAID group. RAID-DP on NetApp is supported using 14 Data Drives and 2 Parity Disk. A traditional RAID 4 is implemented with horizontal parity structure. On RAID-DP the same principles are used to calculate the parity, the Double Parity (DP) calculations are done diagonally using row components.


With a single disk failure, RAID-DP will treat it as a normal failure and rebuild the new disk giving reconstruction of data a normal priority. With double disks failure, RAID-DP will prioritize the reconstruction of these new disks and finish the process in a shorter duration than a single rebuild.


Read Dave Hitz’s (Vice President of NetApp Engineering Division) Blog about why Double Protection RAID (RAID-DP) doesn’t waste extra disk space.


Consider the following as a simple example of single Parity (RAID 4)



You have data blocks (size possibly 4kb each), writing on 7 separate drives D0, D1, D2, D3, D4, D5, D6. Using simple mathematical equation the parity is generated as an addition of all the data, in this case the elements of a single row are added together to generate the P (Parity) information (follow the color scheme).


The sum of all elements of row 1 (row one) are 23. Now let’s say for example, your D1 drive goes belly up. Using the same equation, the D1 drive is reconstructed as 23 – 1 – 1 – 2 – 8 – 7 – 1 or the mathematical equation P – D6 – D5 – D4 – D3 – D2 – D0 yielding the final result 3.


To make things a little complex let’s look at the actual formula used to generate the Parity.

P = D0 XOR D1 XOR D2 XOR D3 XOR D4 XOR D5 XOR D6

For Row 1 your XOR (Exclusive OR) results are 15.


Now let’s take this same example but let’s add DP (Double Parity) to it and see how that works. Again for the math purposes we will leave the parity calculations based on additions rather than XOR).


The same process as discussed earlier is used to generate the P (Parity) which is the addition of all the elements of a single row D0, D1, D2, D3, D4, D5 and D6.

To generate the DP (Double Parity), diagonally one element from each row is added together. So if you see the above example, to generate DP (1), elements D0 (1), D1 (2), D2 (3), D3 (4), D4 (5), D5 (6), D6 (7) are added together.

The color scheme used above shows how the elements are added to create DP. As you stare at it, it will all make sense….

Note: The bracket above denotes ( ) ROW number.

As pointed earlier, in real life to generate the DP like the P, the row elements are XOR (Exclusive OR) together.

The equation would look like

DP (1) = D0 (1) XOR D1 (2) XOR D2 (3) XOR D3 (4) XOR D4 (5) XOR D5 (6) XOR D6 (7)

For DP (1) our XOR results should yield 13.

As you notice, the DP also includes the P (Parity) drive calculations. But for any given DP, only N numbers of drives are used for generating Double Parity. In short with a 9 drive configuration here, we only used 7 drives to generate the DP. This is because with a double failure, the DP and P will be used to reconstruct the new drives.

Let’s talk about a drive failure with RAID-DP.

Single drive failure, the process would be exactly like the example earlier where parity information is used to reconstruct the new drive.

With 2 drive failures, the use of Row level Parity and Diagonal Parity data is used to reconstruct the new drives. Also ONTAP gives a priority to data rebuild with 2 drive failures in the same RAID Group.

The rebuild process starts at the DP level with 2 drive failures. As it hits a certain Row of DP, it will try to reconstruct the data from DP first and then go to Parity to construct the second drive in a consecutive order. With visual or video that can be explained very easily.

Overhead

Traditionally RAID 6 is known to have 25% to 33% performance overhead with Random Writes. One of NetApp’s arguments to create RAID-DP was to overcome this performance hindrance.


NetApp’s base performance varies between 98% to 100% with RAID-DP.


Disk space overhead for RAID 4 on NetApp is between 18 to 25% depending on the number of drives used in a RAID group. With RAID-DP, the overhead is as low as 7.5% with 28 drive RAID Group. The overhead will increase with fewer drives, where you have 16 drives in a RAID Group.

Additional

If you are using SyncMirror with RAID-DP, 4 drive failures will be allowed before there is any data loss.

If you are currently using RAID 4 with Data ONTAP 7G you can upgrade your volumes to RAID-DP.

A Spare drive is used to create DP in a RAID-DP system.

These days, we do see a lot of customers running RAID 6 with their larger SATA and FC drives. Again I don’t think RAID 6 is the future of storage industry, but it surely is the present of the storage industry and because of it, quite a few OEM’s have jumped on RAID 6 implementation into their products.


Note: One graph above has been extracted from NetApp’s Whitepaper on RAID-DP and Implementation of RAID-DP.