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35924
November 18th, 2015 10:00
PS6100 Volume In-Use space question
We have a PS6100 SAN and we are running into some issues with in-use space.
I have read all about how the SAN writes in blocks and once a block is dirty it can no longer be seen as available space. I also know that even though the space may not show available on the SAN as long as the VMware OS has available space it should not cause a problem.
It seems that since our software provider re-configured their db maintenance and setup a local backup to the servers D drive which we have since removed (the backup portion) continues to increase the SAN volume in-use space by 10% every weeks since. We have increased almost 300 gig in 3 weeks. However the VM OS shows we are only using 180gig of 499. My concern is what will happen once the in-use space gets to 100%? I know we can keep extending the volume but we don't really want to keep doing that either. We are also replicating replicas to a partner at our DR site. Is there a way to keep the in-use space from increasing?
Thanks for any and all responses.
CalvinMo
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November 19th, 2015 06:00
Hi Don,
Thanks for the information. One other question - Once the volume reaches 100% in-use space will this at all affect performance with the SAN or replication speeds to our DR site?
Thanks
CalvinMo
5 Posts
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November 19th, 2015 10:00
Ok, just checking. We had read this on another site while doing some research:
"Warning: If your thin provisioned volume usage exceeds the warning limit, write IOPS drops to 10%"
If this rings any bell that you think we should be concerned about please let me know.
Again, thanks for the prompt information, appreciate it.