Well I would say, then, the reason for VV is to eliminate the need for real volumes: using virtual volumes on a remote TSM server eliminates the need to move real tape volumes to the remote server in the event of a disaster. Are they useful: that's a matter or opinion.
Somebody made the very real point that you must have at least two copies of your data: one in the primary pool and one in a copy storage pool someplace else. Whether that's real or virtual is up to you. Kelly J. Lipp VP Manufacturing & CTO STORServer, Inc. 485-B Elkton Drive Colorado Springs, CO 80907 719-266-8777 [EMAIL PROTECTED] -----Original Message----- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of Keith Arbogast Sent: Wednesday, August 22, 2007 2:35 PM To: ADSM-L@VM.MARIST.EDU Subject: Re: [ADSM-L] Why virtual volumes? Richard, You asked thought provoking questions, but didn't answer mine. What is the compelling reason to use virtual volumes? Offsite copypools and certain restorability of the TSM database are essential. Thank you for spotlighting those points. However, I can do those without virtual volumes. Right? What circumstances make virtual volumes helpful, preferable or necessary? TSM development designed and built them for a reason. What is the reason? This is not a rhetorical question. I am hoping someone will turn this light bulb on for me. With best wishes, Keith Arbogast