What version of the OS are you running? Are you seeing any other errors? Id Compression/data reduction enabled? Is replication in use? Is there anything else running during that time?
The "LUN IOPS, LUN Bandwidth, LUN IOPS" charts that are part of the Unity web interface do not include "backend" activity. For example, I have a Unity array that is solely a target of replication, and replication IO is considered backend. So those LUN charts are flatlined at zero. If you look in CloudIQ, there is a category of metrics, System Backend and Pool Backend. Check those out. It may help.
We upgraded from 5.0.3 to 5.0.6 and the problem still exists though it's now less severe.
Turning off compression/dedupe helps the performance overall but has no impact on these 5:03PM "events". Backups don't start until 6PM. At 5PM we're just running business-as-usual.
DELL-Josh Cr
Moderator
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9.5K Posts
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February 26th, 2021 10:00
Hi Richardm112,
What version of the OS are you running? Are you seeing any other errors? Id Compression/data reduction enabled? Is replication in use? Is there anything else running during that time?
Syifer
8 Posts
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March 2nd, 2021 09:00
The "LUN IOPS, LUN Bandwidth, LUN IOPS" charts that are part of the Unity web interface do not include "backend" activity. For example, I have a Unity array that is solely a target of replication, and replication IO is considered backend. So those LUN charts are flatlined at zero. If you look in CloudIQ, there is a category of metrics, System Backend and Pool Backend. Check those out. It may help.
richardm112
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16 Posts
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March 5th, 2021 15:00
We upgraded from 5.0.3 to 5.0.6 and the problem still exists though it's now less severe.
Turning off compression/dedupe helps the performance overall but has no impact on these 5:03PM "events". Backups don't start until 6PM. At 5PM we're just running business-as-usual.