5190/5194 Modular Tape Subsystem Manual

Configuring the Modular Tape Subsystem
5190/5194 Modular Tape Subsystem Manual—426878-002
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Configuring the Modular Tape Subsystem by
Modifying the CONFTEXT File
1. Specify the logical device name of the tape drive. (The examples use $BACKUP
and $DUMP.)
2. Specify the name of the controller for each drive. Use the controller name you
specified in the CONTROLLERS paragraph. (Either the MFC logical tape
controller or the 3216 tape controller. The examples use TAPEA for the MFC
controller and TAPEB for the 3216 controller.)
3. Append the unit number to the controller name. A 5190 or 5194 tape drive
attached to an MFC always uses unit number 5. The 3216 controller can support
two tape drives with the unit numbers 4 and 5. The device ID configured during
installation of the drive CRU must match the unit number. For more information on
the device ID, see Checking and Setting the Device ID on page 3-41.
4. Specify 5190 as the macro name for both the 5190 and 5194 tape drives.
5. Specify the compression modifier following the macro name. This modifier is valid
only for the 5190 tape drive. (Compression mode is always enabled for the 5194
tape drive.) The modifier enables or disables compression mode for the 5190 tape
drive:
The default modifier is NOCOMPRESSION. For information about other ways to
enable and disable compression, see Controlling Data Compression (5190 Tape
Drive) on page 4-44.
Example for a module with one tape drive CRU attached to an MFC:
!Device Controller/ Macro Modifiers
!Name Unit Number
!
$BACKUP TAPEA.5 5190 COMPRESSION;
Example for a module with one tape drive CRU attached to a 3216 tape controller:
!Device Controller/ Macro Modifiers
!Name Unit Number
!
$DUMP TAPEB.5 5190 COMPRESSION;
Example for a module with two tape drive CRUs attached to a 3216 tape controller:
!Device Controller/ Macro Modifiers
!Name Unit Number
!
$BACKUP TAPEB.4 5190;
$DUMP TAPEB.5 5190;
Modifier 5190 Tape Drive Action
NOCOMPRESSION Data is written without compression
COMPRESSION Data is written using IDRC compression