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Defrag a filesystem? Is that possible or needed?
On a Celerra NX4, is there any way to defrag a filesystem and if so, is it something that is needed? Or is this something the array takes care of by itself?
I know we have a VNX2 and it moves data each night between two tiers, I imagine that it is intelligent and with fast cache, something like a defrag wouldn't be needed. But what about these older Celerra's?
Anonymous User
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June 26th, 2014 00:00
So, there is a defrag process but, basically, you don't need to defrag since the file system code is 'tuned' to discourage fragmentation. You'll likely get a low fragmentation (2-5% of the files or so), but this will remain constant except when the partition gets very full and there are lots of file creations/deletions with extremely funny file sizes. From our experience with Celerra, EMC have yet to find a customer who has needed to defrag file systems to regain access performance.