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mujzeptu
 Post subject: What happens when reserved copy size fills up?
PostPosted: Fri Oct 03, 2014 8:10 am 

Joined: Thu Mar 21, 2013 11:38 am
Posts: 166
We have LUN's that are VMFS5 datastores and are doing virtual copy jobs daily. They are set to cycle out every 15 days but I have noticed recently that vcenter datastore migrations cause the reserved copy size % to balloon up fast!

What should I expect to happen as one now sits at 99%? What do others do to deal with these situations?
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Cleanur
 Post subject: Re: What happens when reserved copy size fills up?
PostPosted: Fri Oct 03, 2014 8:33 am 

Joined: Wed Aug 07, 2013 3:22 pm
Posts: 254
Shouldn't matter. The reserved size is the size of the backing LD space a as percentage of the requested virtual size e.g it can quite happily exceed 100% and not affect you VV. Why a migration is causing the growth I dunno, but assuming a low enough change rate then zero reclaim/thin persistence should be able to defrag and claw this back over time.
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