21 Mar
2007
21 Mar
'07
12:48 a.m.
I've read this and other similar documents, but it doesn't really answer my specific question. Basically:
Company purchases filer with 4 full shelves of 14 disks.
Netapp recommends 16-disk raid groups at install time.
Aggregate is created using 3 full raid groups of 16 disks, per best practices recommendations of adding full raid groups
Filer is left with 8 spares (not 7 as I incorrectly mentioned before)
If you're disks are 72 GB or 144GB, then expanding the RAID groups to 20-26 disks shouldn't be that big of a deal.
Large RAID groups are primarily a concern when discussing rebuild times in case of disk failure.. with small disks, the risk is fairly minimal.
Regards, Max