There are so many possible reasons for availability risks in a storage system. It Is best to lower or turn off these risks by closely monitoring the most critical areas.
For a limited time we offer you an analysis of your storage system without effort, without installing a program and without risks and costs.
This service is available for SVC or Storwize storage.
How does it work?
Download the offline scanner app (java app) and use it to collect technical data
Send the data to our reporting... [More]
I'm going to be in Las Vegas from Feb 22 until Feb 27 to visit the IBM Pulse conference.
This is a pretty good time to meet and talk about BVQ business opportunities.
Or do some technical deep dives into the inner world of SVC or Storwize performance characteristics.
Who ever is interested on meeting - just send me a note.
We offer a series of different workshops which will show you how to use BVQ for performance analysis.
The workshops will be performed by using Cisco Webex.
After you have enrolled for a workshop, you will receive an e-mail with all information needed to participate .
Please enroll here with your name and e-mail address:
Please use this link to enroll
(select "other" and enter the sessions code into the comment field)
The three main steps for a performance status (60 min)
This is new for the upcoming Version 3 from BVQ (Nov 13)
BVQ can now scan on 1 minutes interval. It is incredible who much detail becomes uncovered when you scan on 1 minute.
Why does this matter?
A smaller scan interval will allow even deeper looks into the system.
The possibility to change these settings on the fly without any interrupt supports normal ands deep analysis mode.
To switch from 5 minutes to 1 minute is easy and does not need any special activity!
You just change the timing of the statistics... [More]
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:... [More]
In this customer example we had the opportunity that two identical managed disk groups with easy tier did perform completely different.
The Target was to understand why and to find ways to improve the situation.
Both managed disk groups have the same technical setup.
V7000 -1 (Cluster 1) we found that the improvements which have been expected by Easy Tier have not been achieved
V7000- 2 (Cluster 2) showed much better results for Easy Tier
Click here to open the analysis
it is now much easier to perform BVQ demo installation.
Just send us a mail, we will organize everything needed to start a successful demo.
You can also combine this demo with a SVC / Storwize system check.
Request a BVQ Demo
or just send us a mail to
I just found this vmware knowledge base article in the web
Slow performance during Storage vMotion, Clone, and Snapshot consolidation operations in various storage systems (2007723)
I think one of the solutions to this problem can be found in the behavior that we have described here
The bad thing for this is - you will probably not see this problem when you cannot go deeper into the system.
Performance Analysis VAAI undercover write operations
Performance Bottleneck Analysis- VAAI undercover... [More]
I'm really excited about this next option in our mdisk group analysis section. It is the first time that we can analyse into the internal SVC queues down to the storage system.
With this new option we get a much better view of the performance problems of the storage system.
It is obvious that this backend storage system was in deep performance troubles from 5 am to 6:30 am.
Have a look to this:
The picture belongs to this whitepaper
With using min and max cache fullness values one can better analysis what is going on in the SVC or Storwize cache. This is espacially helpful when you want to find the root causes of performance bottleneck.
This document belongs to the BVQ Use Case Performance Analysis
In this example we will see that the usage of the VAAI is somehow hidden from ordinary monitoring methods because the VAAI data streams are not visible on the top SCSI layers. So it might look like a system reacts overloaded without any reason but the reason can be uncovered when you look deeper into the system when your analysis tool is tailored good enough to SVC/Storwize and enables you to see needed the performance indicators.
You find more detail here : full document
last week I had a discussion with one of our customers - we were talking about sens and nonsense of monitoring.What is the difference between monitoring and analysis?
The reason for this discussion was again an article in the web with an performance analysis which stopped at the point where the problem became visible in the graphs but there was no further step to deeper understand an solve this problem.
The main reason for this was, that there was no tool which allowed to do an deeper analysis.
This analysis tool was a... [More]
We actually run a program that we call the HKC Analysis or more simple health check.
One part of this analysis is to check the SVC for typical performance risks.
I have collected some principal steps of this kind of analysis.
We call this part of the HKC analysis the "performance risk analysis".
If you are interested in this kind of analysis
you will find more informations here: HKC Analysis Checklist
or send a mail for more information to firstname.lastname@example.org
We have more and more people installing BVQ by themselves - I am happy that this is working fine.
If you want to do this then you find all needed informations and the code here:
BVQ Releases and Downloads (download page)
BVQ Installation Manual (how to install)
BVQ Releases und Downloads
There are some steps needed to understand and customize BVQ
I collect this information here:
I have added two new documents in the BVQ wiki
in the English section a customer presentation about BVQ Reporting - this file is also available in german
English main page , bvq_reporting_en.pdf
German main page , bvq_reporting.pdf
In the German section a spec sheet about BVQ Accounting - (this will be translated soon into english)
BVQ Accounting Steckbrief 2013.pdf