Instead of making the directory pool a FILE devclass, we have ours designed in a hierarchy.
DIRCACHE DISK devclass and relatively small. Just enough for a nights' backups. NextPool is DIRPOOL wich is a FILE devclass. During the daily server storage pool backkups we: BA STG DIRCACHE VAULT-DIR BA STG DIRPOOL VAULT-DIR UPD STG DIRCACHE HI=0 LO=0 This way we get the backup speed of DISK without having to worry about the MOUNTLIMIT being set high enough on the FILE devclass so a backup session won't be denied. The DISK is then migrated to FILE after being backed up so for reclamation the primary location is a SEQuential device. We also send the directory information to its own offsite copypool for speed of recovery. After the server is restored, we restore the DIRPOOL storage pool. Bill Boyer DSS, Inc. -----Original Message----- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED]]On Behalf Of Tab Trepagnier Sent: Wednesday, July 03, 2002 6:20 PM To: [EMAIL PROTECTED] Subject: Re: Reclaiming LTO Tapes Jack, It's been mentioned before, but if you use a disk pool for directories, you should make the disk pool a FILE devclass. When my directory disk pool was DISK devclass, copypool reclamation would launch and eight hours later I would have reclaimed a few tens of MBs. I rebuilt the directory disk pool as FILE devclass, and copy pool reclamation proceeds at full speed from the start. Tab Trepagnier TSM Administrator Laitram Corporation "Coats, Jack" <[EMAIL PROTECTED]> Sent by: "ADSM: Dist Stor Manager" <[EMAIL PROTECTED]> 07/03/2002 03:35 PM Please respond to "ADSM: Dist Stor Manager" To: [EMAIL PROTECTED] cc: Subject: Re: Reclaiming LTO Tapes I cannot find out how to speed me up either! Mine is slower than sin, on reclaiming my offsite copypools especially. -----Original Message----- From: Guillaume Gilbert [mailto:[EMAIL PROTECTED]] Sent: Wednesday, July 03, 2002 8:41 AM To: [EMAIL PROTECTED] Subject: Reclaiminig LTO Tapes Hey there Maybe its because I'm used to using STK 9840 tapes but yesterday I saw an LTO tape at 25 % utilisation take almost 4 hours to reclaim, which to me is awful. How am I supposed to reclaim my tapes with that kind of performance?. The drives I use are IBM Ultriums in a 3584 library. With only 2 drives it makes it hard for users to do restores... Are there any options I can change to make this go a bit faster. I know the start/stop on LTO's isn't good. Thanks for the help. Guillaume Gilbert CGI Canada
