Both can be used, both have advantages and disadvantages. TSM development is focusing efforts on File Device Class.
Search the archives for some info on which to use (http://msgs.adsm.org/cgi-bin/get/adsm0406/106.html) Check out the 5.2 Admin guide - it has a nice table comparing disk vs file. The biggest drawbacks of disk to me are - no reclamation of aggregates and no multi-session restore. (See the comparisons for more). -----Original Message----- From: Robert R Price [mailto:[EMAIL PROTECTED] Sent: July 30, 2004 9:32 AM To: [EMAIL PROTECTED] Subject: Re: D2D vs. tape backups with TSM? I know that I must be missing something here, but can someone explain why this D2D backup scheme utilizes what I assume to be the sequential FILE device type? Why not just use the (random) DISK storage pool type. This would eliminate any co-location issues, reclaims and not waste ANY disk space with deleted files? Would someone enlighten me?
