We are investigating VTL's as a replacement for our 3494 libraries. A vendor was describing their sizing calculations and assumptions. One of their assumptions BLEW US AWAY!! The vendor recommended that reclamation be done on VTL volumes at a 20-30% Reclamation Percentage. YES, that's right, they recommend that a volume get reclaimed when only 20-30% of the data is expired. They claim that this is possible due to the efficiencies and speed of the VTL, and thus allow us to run at a much higher average utilization. The argument is that with a higher average utilization we can purchase less disk, and thus a less expensive VTL.
Currently, for our tapes, we reclaim at 55-60%. Q) Has anyone every heard of performing reclamation at a percentage as low as 20-30%? Q) Is anyone with a VTL actually performing reclamation at 20-30%? Thanks! Rick ----------------------------------------- The information contained in this message is intended only for the personal and confidential use of the recipient(s) named above. If the reader of this message is not the intended recipient or an agent responsible for delivering it to the intended recipient, you are hereby notified that you have received this document in error and that any review, dissemination, distribution, or copying of this message is strictly prohibited. If you have received this communication in error, please notify us immediately, and delete the original message.
