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Configuring Optical Disk Drives

When adding optical disk drives to the Media Manager configuration, you need only

specify a character device path. Optical disk character device files are found in the

/dev/rdsk directory and have the following format:

/dev/rdsk/c

TARGET

Where:

◆ BI is the bus Instance number of the controlling bus. The Instance value is displayed

in ioscan output under the column I of the ext_bus entries.

◆ TARGET is the SCSI ID of the drive. This ID is in the third position of the H/W Path as

displayed by ioscan. For example, in 56/52.5.0 the SCSI ID is 5.

You can determine the bus Instance using ioscan -C ext_bus -f. The output is

similar to the following example:

Class I H/W Path Driver S/W State H/W Type Description

============================================================

ext_bus 0 56/52 scsi1 CLAIMED INTERFACE HP 28655A- SCSI

Interface

ext_bus 1 56/53 lpr2 CLAIMED INTERFACE HP 28655A- Parallel

Interface

You can determine the configured drives using ioscan -C disk -f. The output is

Class I H/W Path Driver S/W State H/W Type Description

============================================================

disk 1 56/52.1.0 disc3 CLAIMED DEVICE HP C1716T

disk 2 56/52.2.0 disc3 CLAIMED DEVICE HP C1716T

disk 3 56/52.5.0 disc3 CLAIMED DEVICE HP C2490AM

disk 4 56/52.6.0 disc3 CLAIMED DEVICE HP C2490AM

Example of an Optical Disk Device File

Assume you are using the two optical disk drives at SCSI IDs 1 and 2 as shown in the

previous disk ioscan example. These drives are on bus 56/52, which as shown in the

previous ext_bus ioscan, is bus Instance 0.

The character device file paths that you specify to Media Manager follow:

For target 1:

/dev/rdsk/c0t1d0

For target 2:

/dev/rdsk/c0t2d0

68 NetBackup Media Manager Device Configuration Guide for UNIX, Windows, and Linux

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Seagate ST11200N Información técnica Pagina 82