Virtual TapeServer 8.2 Release Notes

Troubleshooting | 60
VTL
 Must remove reservations before disabling a VTL. If you cannot disable a VTL
though no virtual tapes are loaded in the VTDs, make sure no reservations exist for one of
the VTDs in the VTL. For AS/400, this can be done by “varying off” the MLB device or de-
allocating the TAP devices. (TL-3837)
 Multiple tape device types may not be supported in a VTL. Using mixed tape
devices within the VTL will only function as well as the host backup software functions in
that environment. Typically, this can cause the host software to confuse tape types and
drive types. It is recommended that all tape drives are of the same type. (TL-3844)
Tape-to-Tape export
 Tape library must be configured for encryption to support export of encrypted
tapes. The external tape library must be correctly configured to allow VTS to manage
encryption. Refer to the library documentation for instructions. (TL-6435)
 Virtual tapes must be exported to a physical tape library that has physical
cartridges with matching barcodes. If a matching cartridge is not found during a
tape-to-tape export to a library, the job.log will state “Transfer of <CARTNAME> failed;
dup command returned 247”. (TL-5845)
 Tape-to-Tape export fails when library is moved to a different port. All devices
that are not attached when TapeServer starts must be manually discovered using rescan-
scsi-bus.sh. (TL-5698)
 Cartridge remains locked after failed tape-to-tape export from Manage Virtual
Tapes page. Tape-to-Tape export performed from the Manage Virtual Tapes page on a
cartridge in a pool (not in a VTL) fails and the cartridge is not unlocked after the failure.
If the export is done from the Configure Tapes and Pools page, the cartridge is unlocked
after the failure. (TL-4536)
Migration and stacked export
 Export relies on the capabilities of the backup management agent. The agent will
retry the backup repeatedly until it determines file change has not occurred. This could
mean that an empty virtual tape is backed up if a virtual tape is erased after the stacked
export has begun but before it has completed. (TL-4922)
 The 64-bit Networker 7.4 client cannot connect to the Windows 2003 64-bit
server. Networker 7.4 client running on VTS cannot be seen by Windows 2003 Server.
(TL-1836)
WORKAROUND: Install the 32-bit client.
AutoCopy
 An error message from ems_telnet.pl indicates that AutoCopy is not configured.
For AutoCopy to work as designed, manual procedures that mount a tape must end with
unmounting the tape. AutoCopy depends on receiving mount and unmount messages
through EMS to work correctly, and when a tape is manually mounted, the EMS
subsystem is unaware of this. When the manual operation is completed, the tape must be
unmounted manually. (TL-1480)