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MSA P2000 G3 performance

 
lavvaf
Occasional Contributor

MSA P2000 G3 performance

Hello,
We have one msa p2000 g3 fc with 3 enclouser:
P2000 has 12×600 15k sas ( raid 6)
3×D2700 with 36×2TB 7.2k sas (raid 5)
Also we have 6 hp dl380 g7 with esxi 5.5 and broacade san switch.
About a month ago, we were having a serious problem on performance (read & write) so that all our servers hangs.
Please help us find the bottleneck.
Best,
Lavvaf
3 REPLIES 3
Shawn_K
HPE Pro

Re: MSA P2000 G3 performance

Hello,

For performance issues I always start basic and move up the chain.

Is the firmware on the array, D2700s, and the harddrives all at the latest versions? While this can require a maintenance window for upgrading HDDs it is important to get good performance.

For the ESXi 5.5 servers, are the servers BIOs and HBA/NICs all at the latest supported version? Be sure to check compatability prior to upgrding.

Do you have this set up as a cluster? Is the workload evenly balanced between the controllers, fabric layer, and server HBA/NICs? Load balancing is often the key point but makes more of an impact once the firwmare upgrades have all been done.

Is this a new configuration or one that has been running for some time? If it has been running for some time and you have noticed a performance degradation, what changed recently? Adding more VMs or running a new OS feature?

Try upgrading the firmware first and then let us know if this helped at all.

Cheers,

Shawn

Accept or Kudo

Re: MSA P2000 G3 performance

In order to troubleshoot Performance issue, there are many factors involved and it's not straight forward task. Some of the best practice to follow can be no hardware issue should exist, firmware need to be up to date, Connected system like Servers, SAN Switch all need to be up to date with driver/firmware as well.

Need to check what is the block size set at the Host and depends on that we should check if you want high IOPs or high throughput. Specifically, the smaller the I/O size, the more I/Os per second (IOPS) the SAN can process. However, the corollary to this is a decrease in throughput (as measured in MB/s). Conversely, as I/O size increases, IOPS decreases but throughput increases. When an I/O gets above a certain size, latency also increases as the time required to transport each I/O increases such that the disk itself is no longer the major influence on latency. 

Typically, workloads can be defined by four categories—I/O size, reads vs. writes, sequential vs. random, and queue depth.
A typical application usually consists of a mix of reads and writes, and sequential and random.
For example, a Microsoft® SQL Server instance running an OLTP type workload might see disk IO that is 8k size, 80 percent read, and 100 percent random.
A disk backup target on the other hand might see disk IO that is 64k or 256K in size, with 90 percent writes and 100 percent sequential.

The type of workload will affect the results of the performance measurement.

Check this below Customer Advisory and disable "In-band SES" ,

https://support.hpe.com/hpsc/doc/public/display?docId=emr_na-c05306564

You can check the below Customer Advisory as well.........in many situations this helped to improve performance,

https://support.hpe.com/hpsc/doc/public/display?docId=emr_na-c03473698

Apart from the above, you can check the below best practice guide which can give you idea as well,

https://h20195.www2.hpe.com/v2/getpdf.aspx/4aa4-7060enw.pdf

You can also go through P2000 G3 Quickspec and refer Page no 15 onwards to understand some benchmark data which will help you as well,

https://h20195.www2.hpe.com/v2/getdocument.aspx?docname=c04168365

Another forum where some discussion to improve performance,

https://community.spiceworks.com/topic/410981-measuring-and-improving-performance-on-hp-msa-p2000-g3

If you still face performance issue then at the time of performance issue happening capture the below outputs atleast 10 to 15 times along with MSA log and log a HPE support case. They will help you.

# show controller-statistics
# show disk-statistics
# show host-port-statistics
# show vdisk-statistics
# show volume-statistics

If you contact me with all the above data in private message I can try to help you as well.

 

Hope this helps!
Regards
Subhajit

If you feel this was helpful please click the KUDOS! thumb below!

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Re: MSA P2000 G3 performance

@lavvaf......Do you have any update or further query on this?

Request you to please update on the forum so that everyone can get the update who are all following.

If you have no further query and you are satisfied with answers then kindly mark the forum as resolved.

 

Hope this helps!
Regards
Subhajit

If you feel this was helpful please click the KUDOS! thumb below!

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