Author Archive

Amidst a few things

February 16th, 2010 3 comments

Just a quick post to all the readers of StorageNerve and GestaltIT.

Big apologies for the lack of posts and comments approval on the StorageNerve blog and absence from the Twitterosphere over the past few weeks.

Feb: Just returned back from business travel scheduled in February. Had some great meetings with our customers and partners in the APAC region.

Went out sightseeing on a quite Saturday to spot some kangaroos. Here is a picture from my blackberry camera.

Kangaroos on a Golf course

Mid Jan: In the month of January enjoyed some time off with my close family and friends in India and attended a few weddings. It was a nice vacation, relaxed time and always good to catchup with friends from high school.

Though walking on the road in Mumbai, India, spotted a $2500.00 (new) car (TATA NANO). Seems this car is making a lot of buzz in India and soon coming to Europe. Though not sure if we would ever see this car in the US.


There are quite a few events that I will be attending in Feb, Mar and April. Look for blog posts relating to those events here. As usual twitter activity and blogging should resume back in the next few days.

In the meantime, appreciate all the feedback, questions and comments from the readers and again thanks for continuing to read StorageNerve.


Compellent Storage Center 5 – Introduced

January 11th, 2010 6 comments

Compellent is introducing the new Storage Center 5 today (11th Jan, 2010). Some highlights of this announcement are: Dynamic Storage Architecture for Disaster Recovery, Automated Storage Tiering and Ease of Management for Virtual Data Centers.

Recently EMC introduced FAST (Fully Automated Storage Tiering) for its Symmetrix, Clariion and Celerra products. Compellent has been the market leader in the offerings around Automated Storage Tiering, which it introduced around 3 years ago.

Some granular highlights of the new Storage Center 5 are:

Portable Volume Replication: Data gets replicated to a portable external drive, encrypted and shipped to a remote site for disaster recovery purposes. Mounted through USB ports.

Scalable SAS Storage: Using Storage Center 5 now customers can scale their Compellent Storage from 6 drives to 384 drives in the same unit (serial number) and using the existing enclosures.

Automated Tiered Storage for RAID 6: All data is written to RAID10 devices and then using Automated Storage Tiering, the least active portions of the data is migrated to RAID6.

Virtual Ports: Addition of virtual ports through shared physical ports will allow the customers to reduce the active number of ports on a Compellent unit and the associated switches by 50%, these ports would be able to move through physical connections and can be shared. Support for both FC and iSCSI will be available with Virtual Ports.

Server Mapping: Automation of virtual server deployment with clusters for thin provisioned volumes, which will enable addition and removal of any servers any time without an outage, enables automated multi-pathing.

Introduction of Consistency Groups: Data recovery of applications, using snapshots.

Compellent Storage Center 5

Some Drawbacks of this announcement seem to be:

Portable Volume Replication: It is probably hard to understand why customers would replicate or copy data to portable volumes and then spend money to ship the drives to a remote site. May be agreeable with slow replication links, it may take weeks to replicate all the data, but is this best way to replicate data with shipping disk drives (portable volumes). Why not just replicate data directly to a remote site with a bit of high bandwidth connection. No way is this CDP (Continuous Data Protection).

Scalability: To reduce footprint, easy manageability of data and ever growing customer demands related to data, would a 384-drive system accomplish the scalability issue?

Cost: Even though Automated Storage Tiering is a big selling point within Compellent Architecture, the product has additional licensing cost compared to a base unit. Compellent should try to make the automated storage tiering feature an included feature with all its new generation products.

Seems like Compellent solution is sort of targeted for mid-tier markets, competing with the EMC Clariions, NetApp FAS series, HP EVA’s systems. It doesn’t seem like these units will be able to withstand the brutal I/O requirements of Enterprise class storage. May be my understanding of the Compellent architecture is not so deep.

Though it is worth noting that Compellent is a very strong growing company with last 16 positive growth quarters, +1B Market Cap and around 1700 customers in 35 countries.

Happy Holidays to all the Readers

December 25th, 2009 No comments

It’s been really hard to keep up with blogging these days since most of the time spent goes either at work or with family or shopping.

The holiday season is great and the spirits are high.

Somebody put it very nicely……


.The True Spirit of Christmas

Lots of people
crowds everywhere
Rushing and pushing and shoving,
going nowhere.
It’s Christmas time again
Have to get all those things done
hustle, bustle, quickly,
We must beat the sun.
Must get this and must get that
Maybe this nic, maybe that nak
When did it happen?
When did we lose track…
It’s a race, yes it is
We are running, yes we are
But let’s not forget
before we get too far-
What is really important
Doesn’t take much to figure out
Take time to love
and love from the heart.

It is fun seeing all the little kids running around in the house and all the grownups having great time talking about the days when we will little. Santa should be home tonight at the party and will bring over lots of gifts for little kids………

Hope 2009 was great for everyone and 2010 will bring lots of joy and fun.

Again have safe and exciting holidays!!!!

Signing off for the rest of the year……….

Symmetrix: The Journey of 20 Years

December 15th, 2009 6 comments

!! CHECK OUT THE VIDEO: Journey of the Symmetrix !!

So this year will mark the history of the Symmetrix products, 20 years since its inception and the Symmetrix has come long ways. Initially released in 1990, today’s Symmetrix does not come any close to what the product was 20 years ago. The underlying code (Enginuity) is what drives and gives the Symmetrix its personality.

Symmetrix was a compute / storage beast 20 years ago and so it is today.

This post includes the video “Journey of the Symmetrix”  (20 years in the making) created exclusively for this blog post.

To read more about the Symmetrix

Symmetrix Deepdive

Symmetrix product is considered a Flagship product and possibly has the largest share in the Enterprise Storage – Compute market today.

Here is a video I have put together showing my love for the Symmetrix Product. It starts with the Symm that was invented 20 years ago to this last generation Symmetrix V-Max.

Viewable in HD

Some other details on the Symmetrix include generation of the product, some facts, Enginuity code levels and model numbers.

The 8 Generations of Symmetrix

  • First Generation: 1990
  • Second Generation: 1992
  • Symmetrix 3.0: 1994
  • Symmetrix 4.0: 1996
  • Symmetrix 4.8: 1998
  • Symmetrix 5.0: 2000
  • Symmetrix 5.5: 2001
  • Symmetrix DMX (Generation 6.0): 2003
  • Symmetrix DMX-2 (Generation 6.5): 2004
  • Symmetrix DMX-3 (Generation 7.0): 2005
  • Symmetrix DMX-4 (Generation 7.5): 2007
  • Symmetrix V-Max (Generation 8.0): 2009

There are various models within each generation of the Symmetrix and these models have different characteristics. Follow the deepdive section to read more about it.

Some other facts of the Symmetrix include:

  • Introduced in 1990
  • 8th Generation Symmetrix available in the market today
  • 450 Patents
  • Introduction of the first every ICDA: Integrated Cache Disk array
  • First system to support both Mainframe and Open systems environment
  • SRDF Support introduced in 1994 (first in the market)
  • RSF Supported introduced in 1992 (first in the market)
  • BCV support introduced in 1997 (first in the market)
  • In-the-Box Tiering only offered through Symmetrix (DMX-4 onwards), can support FLASH, Fibre and SATA drives
  • Symmetrix (DMX-4) is worlds first PB enterprise system
  • Symmetrix (V-Max) is worlds first multi PB enterprise system
  • USD 3 Billion invested in Symmetrix Multi-vendor Interoperability Matrix support
  • 800 Speed Gurus supporting the Symmetrix Performance and configurations for optimizing environments.

Enginuity Code Levels

  • First Generation: Unknown
  • Second Generation: Unknown
  • Symmetrix 3.0: 50xx, 51xx
  • Symmetrix 4.0: 5265, 5266
  • Symmetrix 4.8: 5266, 5267
  • Symmetrix 5.0: 5567, 5568
  • Symmetrix 5.5: 5568
  • Symmetrix DMX (Generation 6.0): 5669, 5670, 5671
  • Symmetrix DMX-2 (Generation 6.5): 5670, 5671
  • Symmetrix DMX-3 (Generation 7.0): 5771, 5772
  • Symmetrix DMX-4 (Generation 7.5): 5772, 5773
  • Symmetrix V-Max (Generation 8.0): 5874

Symmetrix Models

  • First Generation: 4200
  • Second Generation: 4400, 4800
  • Symmetrix 3.0: 3100/5100, 3200/5200, 3500/5500
  • Symmetrix 4.0: 3330/5330, 3430/5430, 3700/5700
  • Symmetrix 4.8: 3630/5630, 3830/5830, 3930/5930
  • Symmetrix 5.0: 8130, 8430, 8730
  • Symmetrix 5.5: 8230, 8530, 8830
  • Symmetrix DMX (Generation 6.0): DMX800, DMX1000, DMX1000-P, DMX2000, DMX2000-P, DMX3000-3
  • Symmetrix DMX-2 (Generation 6.5): DMX801, DMX1000-M2, DMX1000-P2, DMX2000-M2, DMX2000-P2, DMX2000-M2-3, DMX3000-M2-3
  • Symmetrix DMX-3 (Generation 7.0): DMX3-950, DMX3
  • Symmetrix DMX-4 (Generation 7.5): DMX4-950, DMX4
  • Symmetrix V-Max (Generation 8.0): V-Max SE, V-Max


I have not been awarded a free V-Max or DMX-4 for my basement. I do not personally own a V-Max or a DMX-4.

As you can see, this post shows my love for the Symmetrix technology and sort of my tribute to the 20 years of Symmetrix technology advancement.