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VPLEX Performance Problem
Hello,
We are using 2 x UNITY600 with VPLEX local VS2 dual engines as storage infrastructure for our core-banking.
We have a performance problem with transferring daily records of the transaction table to its historical table with 26 indexes and around 2 billion records after mirroring the LUNs of index data files in VPLEX, meaning EOD (End of day) and BOD (Beginning of DAY) jobs takes 2-3 hours more than before.
As a test we removed the mirroed legs from INDEX virtual volumes and performance was ok, started to mirror again and performance problem was seen.
Any experience ? is there any performance tuning and solution for VPLEX ? Any idea to help resolving the case ?
DELL-Josh Cr
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January 23rd, 2020 15:00
Hi,
Was it working without the slowdown previously? Are all of the drives online? Is everything up to date?
M.Hani
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January 23rd, 2020 16:00
Yes, all arrays and vplex running the latest target code by EMC. All devices and HDDs are online.
The performance is good when using RAID0 devices for INDEX. but when converting to RAID1 with 2 legs then will face slowdown.
Is there any option to tell VPLEX process host I/O before mirror the 2 legs of device ?
command mirror-isolation could help ?
DELL-Josh Cr
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January 23rd, 2020 16:00
Yes, that could help.
M.Hani
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January 23rd, 2020 17:00
could you please clarify how could be help ? what would be behavior of VPLEX with this command ? How affect mirroed RAID1 virtual volumes ?
Is there any other idea to improve performance ?
DELL-Josh Cr
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January 23rd, 2020 17:00
Page 97 examples it somewhat, but it gives all the resources to one mirror. https://dell.to/2NSd2iI
M.Hani
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January 23rd, 2020 17:00
any other way for improvement of performance ?
DELL-Josh Cr
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January 23rd, 2020 18:00
No commands that will improve performance. You could do the steps here and contact phone support. https://dell.to/2Robb7q
M.Hani
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January 23rd, 2020 18:00
Can we distribute LUNs between the 4 directors to do load balance ?
DELL-Sam L
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January 24th, 2020 08:00
Hello M.Hani,
It is best to contact support so that they can pull some logs and see what is the best way to improve your performance.
Please let us know if you have any other questions.