9710 (StorageTek) Addendum for NonStop Servers

Addendum to the StorageTek™ 9710 for the Tandem Environment

The 5155/5159 Digital Linear Tape CRE and NonStop Kernel

9-48

9.5.3.1 Specifying the Compression Modifier in the PERIPHERALS

Paragraph

When the PERIPHERALS paragraph on the CONFTEXT file is

used to control compression (shown in the example below), the

compression mode can be changed by:

• Reconfiguring and reloading the system

• Using MEDIACOM to set a system-wide default

• Using the SETMODE 162 procedure call for a specific job.

If a consistent system-wide compression default for the 5190

tape drive is to be used, but MEDIACOM is not used, the

COMPRESSION modifier can be specified in the

PERIPHERALS paragraph. The modifiers that control

compression are COMPRESSION and NOCOMPRESSION.

For example, to turn compression mode on:

!Device Controller / Macro Modifiers

!Name Unit Number

$BACKUP TAPEA.5 5190 COMPRESSION;

Note: It is not necessary to specify the COMPRESSION modifier in the

PERIPHERALS paragraph if a system-wide default specification has been

set using the MEDIACOM ALTER MEDIADEFS command. The

MEDIACOM default specification overrides this modifier.

For more information on tape-specific CONFTEXT file entries,

see “Configuring the Subsystem by Modifying the CONFTEXT

File”.