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Configuring Tape Drives

3. The commands to create the passthru device files for the tape drives are as follows:

cd /dev/sctl

/usr/sbin/mknod c7t0l0 c 203 0x070000

/usr/sbin/mknod c7t1l0 c 203 0x071000

/usr/sbin/mknod c7t4l0 c 203 0x074000

/usr/sbin/mknod c7t5l0 c 203 0x075000

These commands create the following passthru device files. Although the passthru

device files for tape drives are used during NetBackup operation, they are not

specified during configuration.

/dev/sctl/c7t0l0

/dev/sctl/c7t1l0

/dev/sctl/c7t4l0

/dev/sctl/c7t5l0

During Media Manager tape drive configuration, the following no rewind on close

device files are used. See “No Rewind Device Files” on page 67 for instruction on

creating no rewind device files.

/dev/rmt/c7t0d0BESTnb

/dev/rmt/c7t1d0BESTnb

/dev/rmt/c7t4d0BESTnb

/dev/rmt/c7t5d0BESTnb

Fast-Tape Positioning (locate-block)

Locate-block is supported for most drive types in HP9000 for Fast/Wide GSC SCSI

adapters. See the VERITAS support web site for a list of drive types that are supported.

Enabling locate-block

NetBackup and Storage Migrator use the locate-block command by default if a passthru

path is configured. See “Enabling Passthru Paths” on page 63.

Disabling locate-block

To disable locate-block positioning, execute the following command:

touch /usr/openv/volmgr/database/NO_LOCATEBLOCK

With locate-block positioning disabled, NetBackup uses the

forward-space-file/record method and Storage Migrator skips file marks.

Chapter 4, Hewlett-Packard HP-UX 65

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Seagate ST11200N Información técnica Pagina 79