Seagate ST11200N Informações Técnicas descarregar pdf (Página 81)

Configuring Tape Drives

No Rewind Device Files

When adding tape drives to the Media Manager configuration, you need only specify a no

rewind on close device file path. These device files are found in the /dev/rmt directory

and have the following format:

/dev/rmt/c

CONTROLLER

TARGET

UNIT

BESTnb

Where:

◆ CONTROLLER is the Instance number of the controlling bus. The Instance value is

displayed in ioscan -f output under the column I of the controllers entry (ext_bus

in the Class column).

◆ TARGET is the SCSI ID of the tape drive.

◆ UNIT is the SCSI logical unit number (LUN) of the drive. This is usually 0.

If the desired tape device file does not exist, you can create device files using the sam

utility or with the following mksf(1M) command:

mksf -C tape -H

H/W_Path

-b BEST -u -n

Where H/W_Path is the hardware path of the tape drive as specified by ioscan.

No Rewind Device File Example

Assume that the desired 4-mm DDS2 compression tape drive is at SCSI ID 2 and ioscan

-f shows the following:

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

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

bc 0 root CLAIMED BUS_NEXUS

bc 1 56 bc CLAIMED BUS_NEXUS Bus Converter

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

Interface

target 0 56/52.2 target CLAIMED DEVICE

tape 0 56/52.2.0 tape2 CLAIMED DEVICE HP HPC1533A

The Instance number for the controlling bus is 0 and the H/W path for the tape drive is

56/52.2.0.

The command to create the device file for the drive follows:

mksf -C tape -H 56/52.2.0 -b BEST -u -n

This creates the following device file, which you specify to Media Manager:

/dev/rmt/c0t2d0BESTnb

Chapter 4, Hewlett-Packard HP-UX 67

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