The BVQ development team is currently working on the new BVQ dashboard functionality. This new dashboard should become available in 1H2015.
The dashboard is great for monitoring, you can open several dashboards and put them onto different screens, this will then be a complete storage control station.
Each of the different windows can be graped, zoomed out and used for any kind of analysis.
put different SVC or Storwize systems on different monitors or you just mix them - as you like.
Find more details in the BVQ reference pages
Expansion and optimization of SAN infrastructure for
a higher performance and an improved monitoring
SYSTEMS AND SOFTWARE
IBM SAN Volume Controller (SVC)
SVA Business Volume Qualicision BVQ (Base Edition)
IBM Storwize V7000
In short Special circumstances can cause an overload of the SVC/Storwize upper cache. The impact of this situation can be very dramatic. In this example, the customer environment was near to a complete standstill. It is sometimes amazing how quickly small problems can develop into a complete fiasco .
The performance problem is very difficult to understand if it is an upper cache overflow, because the performance of VDisks are extremely bad while no effects can be seen in the partition caches or mdisks.
In this customer... [More]
BVQV3.3.2 has toleration support for V7.4 which means that everything is supported without the new V7.4 features encryption and child pools.
These will be supported with the upcoming BVQ V3.4
The BVQ story ...
The storage challenge
Even a small storage environment may be complex. Questions about cost optimization or availability are hard to answer because the knowledge about actual and future performance needs is often not available or not current. Analysis and help in case of performance bottlenecks is not possible because of missing tools or the available tools do not have the technical depth or are too complex to be used.
The start of the... [More]
It is a long time ago, that I added an analysis video to the wiki.
The following is a very nice situation where we had to find the reason for a very high load on a node port.
You can find the video here:
Link to Video
Download video as mp4
We are very proud to announce the general availability of BVQ Version 3.3.
BVQ Version 3.3 is the first IBM SVC and Storwize monitoring and analysis solution with full support of the IBM SVC and Storwize Family Software V7.3.x.
IBM SVC and Storwize Family Software V7.3.x enhances overall system performance by introducing a completely new cache architecture. With BVQ V3.3 we are now able to analyze this new cache architecture. This is highly essential, to better understand performance bottlenecks because many problem root causes can... [More]
This is a a new performance analysis whitepaper in the technical section of BVQWIKI
The unbalanced VDisk mirror problem
Many performance issues are caused by an unbalanced situation in the two sides of VDisk mirrors.
One finds, that a mirrored Volume runs into latency peaks which cannot be explained by the Volume behavior itself. The managed disk groups (mdg) in the storage backend show completely different load and latencies.
We have recognized that often the distribution of primaries can cause this problem.
Storwize Family Software V7.3 has implemented many changes, specially in the cache architecture, Easy Tier and re-striping of storage pools. The changes target to enhance overall system performance. The experience is good but sometimes little things can cause trouble and can lead to a deterioration.
What to do, if you have made this experience?
Try to find the reason and fix it!
We have just released the new BVQ V3.3 offline scanner for general download. This scanner can now also capture the new performance metrics of... [More]
Next week we will first time show BVQ 3.3 Beta at the German SVC user group day in Ehningen.
BVQ version 3.3 supports the SVC / Storwize version 7.3 completely, including the new cache architecture.
Further improvements are removable window, with which more than an analysis can be edited at the same time.
Link to BVQ:
BVQ version 3.2 supports the new SVC / Storwize code versions 7.3.x
The BVQ scanner from older versions is not able to work with the new Storwize code.
New BVQ code Version 3.2
If you upgrade from BVQ versions before BVQ V3.0
Since BVQ 3.0 we also changed from DB2 V9.7 to DB2 V10.5. If you are still running DB2 V9.7 and you want to upgrade to BVQ 3.x you also need to upgrade to DB2 V10.5 and with this you need to have a new DB2 license file.
The special DB2 license is part of the... [More]
Another new feature of the latest BVQ offline scanner allows to scan more than one systems at once.
This is especially helpful when you plan to use BVQ Copy Services Package to analyze Metro Mirror or Global Mirror connected systems.
A profile is created per Storage system, which is then used for this one system to separate the data. In this way, many different SVCs and or Storwize systems can be scanned at the same time.
Find more information here
Use BVQ to optimize SVC and Storwize in multi IO group clusters
Abstract (The whitepaper is in draft mode! )
The experience with the analysis of multi I/O group clusters always show the same kind of problem. Technical resources in larger SVC or Storwize environments are often utilized very unbalanced. This leads to performance bottlenecks in some areas of the system whilst other areas are totally underloaded. These kind of performance bottlenecks are often very hard to understand without using... [More]
I just finished an performance bottleneck analysis for an 8 nmode cluster with several 100 TB and found one thing which I think might be a commonly made mistake in many of the bigger SVC environments. This picture shows the MDisk performance of SSD storage which is not acceptable. We have 37 ms latency on 37000 IOPS which is a bad value for this technology.
This picture shows one common reason, for bad storage performance whilst SVC and the backend storage look bored.
BVQ can help to find the reasons for these kind of problems and show... [More]