We had a very interesting month. We have fixed performance problems on 3 different V7000 Systems in Europe - all of them are running much better now. The problems have been found in very different places: SAN, Cache Overload, Compression, ...
In no case we had to extend a system - all was solved with changes in setup only.
Do not hesitate to call us when you have performance problems with a Storwize or with a SVC. We will use BVQ to locate the reason for it. No risk for you, no purchase obligation.
Call us: http://tinyurl.com/CALL-BVQ
I have written a white paper about one of these customer situations: http://bvqwiki.sva.de/x/eICr
One Example was also really interesting - a metro mirror between two V7000 where a volume on side 1 produced very bad latencies - the reason was found in site 2!
The BVQ Blog
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Analysis of a completely overloaded SVC
See the complete Story here
Customer Use Case: Analysis of a completely overloaded system
I added this document because I have never seen such results before. The Storage has real performance Issues and it is easy to see that there is a big problem to get the data written down from the SVC caches to the backend storage. A Case where I believe that the storage backend has to be exchanged with something that performs better. Technically the used storage should be able to support all performance needs but in reality it doesn't. The backend storage a N6060 and it might be that they are no longer able to perform wide striping because of higher capacity usage.
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Thi is the news entry in BVQ WIKI
I want to invite you to a live demo with BVQ - the demo will be scheduled with Teamviewer.
You need to receive an invitation for this so please send an email like stated below.
The Web Conference will cover:
The Web Conference Demo will start on three different times - please choose the time that fits best to your time zone
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mipi 270004DGB0 Tags:  bvq planning performance san monitoring vmware analysis problem svc switch v3700 issue volume storage controller v7000 2,064 Visits
BVQ is by today the only analysis software on the market which covers the new front end and back end cache structures which have been introduced with SVC Storwize code V7.3 V7.4.
The knowledge and coverage of these new structures are eminent to be successful with performance problem analysis.
We have many storage performance examples collected in our white paper section
---------- This is an additional information to this blog entry from 15/02/25 ---------------
Some videos on how to analyze and solve a performance issue on SVC (IBM SAN Volume Controller) or Storwize.
The videos show ...
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