I would automate the check out process and run it before the check in process. That will keep the old tapes at the bottom of the scratch list. Provided there is enough scratch then the older tapes will not make it to the top. TSM will reuse a tape immediately if it is mounted and becomes scratch. I suspect TSM will not know the full barcode and may not be able to know which type of media. Being a read-only tape it should have an error and try another tape.
Andy Huebner -----Original Message----- From: ADSM: Dist Stor Manager [mailto:[email protected]] On Behalf Of Rhodes, Richard L. Sent: Thursday, June 19, 2014 11:19 AM To: [email protected] Subject: [ADSM-L] 3584 upgrade: 3592-E05 to 3592-E07 Hi, This weekend we are upgrading all of our tape drives (in 2 libraries) from 3592-E05 (TS1120) to 3592-E07 (TS1140). The libraries currently have a mix of JA and JB media. We will be migrating over time to all new JC media. JA tapes are READONLY on 3592-E07 drives. JB tapes are READ/WRITE on 3592-E07 drives. The plan is to: - Export out of the lib all current scratch JA/JB media. - Mark all existing JA/JB media ReadOnly. - Insert lots of new JC media. - TSM will write to the new JC tapes. - As JA/JB tapes drop to scratch, export them out of the Library, and insert more JC media. When JA/JB tapes drop to SCRATCH status, I'm not sure I will always be able to export them before TSM might try and reuse them. If TSM tries to use a JB tape, that is OK - it will work. But what if TSM selects a JA tape and tries to use it. That would fail since 3592-E07 drives can READ JA media but NOT WRITE to them. Q) Is TSM smart enough to not load a JA media into a 3592-E07 drive for writing? TSM has the media_type of all tapes (q libvol f=d), so I would think it should know not to do this. 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.
