I just added two DS14 shelves to an F840. I have 24 of the disks available for a new volume(s). Would it be better to create 2 volumes of 12, 72G drives or 1 volume of 24, 72G drives. The filer is used as a cache for storing radiology images. No backups are required and there are no snapshots required either. I have two hot spares available.
My personal preference has always been to make the volume as large as possible and manage it with qtrees. In your case you don't need backups so qtrees (and therefore backups) are not an issue. For 72gb drives I keep the raid groups at 10 drives, maybe 8 if you can afford the space. This way you have one volume and stripe the data across all the drives, but you're raid groups are smaller so if you lose a drive it can rebuild faster.
Just my $.02
~JK
"Haber, David J." wrote:
I just added two DS14 shelves to an F840. I have 24 of the disks available for a new volume(s). Would it be better to create 2 volumes of 12, 72G drives or 1 volume of 24, 72G drives. The filer is used as a cache for storing radiology images. No backups are required and there are no snapshots required either. I have two hot spares available.
With DS14s, I usually use 9-drive raidgroups (9 x 3 == 27) plus one hot spare for every two shelves. three 9-drive RG's in one volume give you usable space of just shy of 1.5 Tb.
(dst /)218# rsh netapp6 vol status vol0 Volume State Status Options vol0 online normal nosnap=on, nosnapdir=on, raidsize=9
Plex /vol0/plex0: online, normal, active RAID group /vol0/plex0/rg0: normal RAID group /vol0/plex0/rg1: normal RAID group /vol0/plex0/rg2: normal
(dst /)219# rsh netapp6 df Filesystem kbytes used avail capacity Mounted on /vol/vol0/ 1503597776 646356280 857241496 43% /vol/vol0/ snap reserve 0 0 0 ---% /vol/vol0/..
-skottie
Haber, David J. wrote:
I just added two DS14 shelves to an F840. I have 24 of the disks available for a new volume(s). Would it be better to create 2 volumes of 12, 72G drives or 1 volume of 24, 72G drives. The filer is used as a cache for storing radiology images. No backups are required and there are no snapshots required either. I have two hot spares available.
-
Haber, David J. -
Jeff Kennedy -
Skottie Miller