FAS2020 2 Shelfs - adding 2 other - question !

[dormelchen]

Hello,

we have a FAS2020 with 2 Shelfs.

Every Shelf owns 405 GB FC HDs.

Now we want to add 2 additional shelfs.

What is the problem if we want to use 600 GB HDs ?

can we integrate each of the new shelfs to the aggregates which we already have ?

Thank you

[netappnasadmin]

You can add two additional shelfes.

if we add the 600GB HD to your exisitng 405GB HD then the usable disk size will be only 405Gb remaing data space will be wasted on the 600Gb disk.

so better create the new aggregate with 600HD disks.

[aborzenkov]

No exactly true. It is possible to add new disks as separate raid group(s), in which case they will be fully utilized. It is not best pratices, but it is doable.

[mcope]

You'll want to add the new disks to the aggregate using the command line rather than FilerView because you can use the -g <raid group name> flag to create a raid group of just the 600GB drives.  Regardless of whether you add them to the existing aggregates or create new ones, be sure to maintain 450 and 600GB spare drives.  You can use the 600GB drives as spares for both sizes, but once they are downsized to 450GB, it's very difficult to return them to 600GB

[amiller_1]

You might want to look at SATA shelves as well -- there's actually a good chance that you'd be hard-pressed to saturate (4) shelves of FC disk through a 2020.