2010-11-15 05:05 AM
can anybody explain me, what is the point of creating multiple FlexVols in one aggregate?
As I understand, it's possible to use one FlexVol comprising the whole aggregate, and after this divide FlexVol using Qtrees if there is a need.
So from my point of view FlexVol is quite unnecessary layer in NetApp disk structure.
Solved! SEE THE SOLUTION
2010-11-15 06:01 AM
as it has been already said, there are several other reasons, but snapshotting is usualy the easiest way to explain a new netapp customer why we divide into flexvols.
usualy we go with 1 volume holding 1 qtree holding 1 lun for SAN or 1 volume holding several qtrees for NAS. besides that, keep the deduplication flexvol limit in mind when sizing netapp volumes, eg 4TB on a FAS3140
2010-11-15 08:07 AM
A qtree does not hurt you and if you ever plan on a async replication like qtree snapmirror and/or snapvault, you do need qtrees.
You can add qtress to existing volumes and online move luns into them if its within the same volume btw:
filer> qtree create /vol/san/disk1
filer> lun move /vol/san/disk1.lun /vol/san/disk1/disk1.lun