If its the same or similiar problem I had in converting from a 3466-C00 (tsm 3) to a 3466-C01(tsm 4) but using the same 3494/3590s then its because your system thinks the tapes are ONLY capatible in READ/ONLY mount modes.
Even though you are mounting a tape for RESTORE if you look closely you will find the tapes are being mounted R/W. If the system sees a tape R/O it will mount it R/O and this bypasses the problem. The system thinks the tapes were originally written using heads (B1/E1/whatever) that are write-incompatible with your 'current/new' (even though the same) drives. IBM offered the above workaround but I know of no APAR to adddress it with a fix. I think TIVOLI doesn't understand IBM's religious belief in upward compatibility and so TSM 4 doesn't have a bridge from ADSM/TSM 3. If I'm right then your works cut out for you. You have to move data or reclamate all FILLING tapes and make all FULL tapes READ/ONLY until they are re-cycled. that's what I had to do. SIGH. hope this helps. ... joe.f. Joseph A Faracchio, Systems Programmer, UC Berkeley Private mail on any topic should be directed to : [EMAIL PROTECTED] (510)642-7638 (w) (209)483-JOEF (M) 5633 2 weeks left!!! On Thu, 7 Mar 2002, Jason Morgan wrote: > Earlier I posted a question regarding a migration problem I was having > while trying to restore to a 3590 with a tape stacker. > > I was encountering a no drives availabel while trying to restore. > > To overcome this problem, I had to mark the volume as READ ONLY. The > restore went throught without a hitch. > > Can anyone tell me what TSM does differently on a restore when a tape is > marked as READ ONLY instead of READ WRITE ? > > I think it has something to do with mount points. > > Thanks in advance. > > Jason >