Mark,

Where do you define this
I use this command to define a diskpool:
 def devclass fileclass devtype=file maxcap=64g dir=/testfs
 def stgpool filepool fileclass pooltype=primary maxscratch=100

/testfs is a JFS2 filesystem.  How big can /testfs grow to?  The documents
say 1TB.
When volumes are created in the stgpool filepool, it creates a volume of 64G,
which is the max value you can specify.  Where do you define the 500GB you said.

Eliza


>
> From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On
> Behalf Of Eliza Lau
> >Our 3494 with 3590K tapes in 3 frames is getting full.
> >Instead of adding another frame or upgrading to 3590H or 3592
> >tapes we are looking into setting up a bunch of cheap ATA
> >disks as primary storage.
> >
> >The FILE devclass defines a directory as its destination and
> >JFS2 has a max file system size of 1TB.  Does it mean the
> >largest stgpool I can define is 1TB?
>
> No. What it means is that the largest single volume in your diskpool can
> be 1TB. You could have, say, 30 volumes @ 500GB per volume, making a
> total storage pool size of 15TB. Every two volumes would be in their own
> filesystem.
>
> If you're using a disk farm as your primary storage pool, fault
> tolerance is strongly recommended. RAID0 and RAID1+0 would be more
> expensive; RAID5 might make more sense, as long as you were using a
> proper monitoring system (properly set up) to watch the health of your
> disks. Are you using CACHE=YES in your proposed disk solution?
>
> --
> Mark Stapleton (stapleton AT berbee DOT com)
> Berbee Information Networks
>
>