ClearPath OS 2200 Series Release 13.2 Software Planning and ...

Operator Interfaces
The console keyins (UP, DN, RV, FS, and SU) that are available for current tape devices
and that do not attempt write functions are available for the DVD. Since the DVD is
supported as read-only media, console keyins that attempt to write to the DVD should
not be used. Examples are SV, SB SBDEV, and SB IODEV where the device specified is
a DVD. Errors can occur before a write is attempted to the DVD.
DVD Mnemonics
Table 4–6 describes the DVD assign mnemonics. The media type is 79.
4.6.15. Virtual Tapes
4.7. TIP
Table 4–6. DVD Assign Mnemonics
Assign Mnemonic CONV EQUATE Drive Allocated
DVDTP None DVD
Audit trails cannot be configured to use virtual tapes. VTH tapes exist in normal mass
storage files that can be candidates for rollout. If these files get unloaded, the only valid
copy of the data is on a physical tape. However, you cannot access the virtual tape
directly from the physical tape on which it resides. To access the files, you must restore
(in other words, ROLBAK) the virtual tape to mass storage. Be aware that if these virtual
tapes contain backups such as IRU move or dump information, this increases the time it
takes to recover an application group or file. When performance of a recovery or
restoration is critical, the need to restore virtual tapes can cause an undesirable delay.
This subsection describes TIP considerations.
4.7.1. General
• You should install the TIPUTIL level that corresponds with the target Exec level.
Previous levels of TIPUTIL might not be compatible with the target Exec level.
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TIP
• TIPUTIL generations require the RLIB$ file which corresponds to the target Exec
level. If you generate your TIPUTIL on the target Exec level, it will include the correct
RLIB$ file. To prebuild your TIPUTIL system on your current system before migration
to the target Exec level, use the RLIB$ SGS to specify the location of the target
Exec’s RLIB$ file. For details on using the RLIB$ SGS, see “TIPUTIL Generation
Control Statements” in the Exec System Software Installation and Configuration
Guide.