HP C1537A, Technical Reference Manual

Page: 12 / 62

12 HP Alpha UNIX 5.1x
(DAT 72 drives only)
Buffered = 0x1
DENSITY:
DensityNumber = 1,2
DensityCode = default
CompressionCode = 0x1
Buffered = 0x1
3 Rebuild the kernel by running:
/sbin/ddr_config -c /etc/ddr.dbase
then reboot the system with the tape drive attached. The device files for the
DAT 72 drive will be generated in
/dev/tape
and
/dev/ntape
when
you reboot.
4 The names of the device files can be interpreted as follows:
Devices in the /dev/ntape directory are "no-rewind" devices, those in /
dev/tape will do a rewind on close.
The device files then have the syntax,
tapeX_dn
where:
X
is the instance of the drive
n
is the density number
For example,
/dev/ntape/tape66_d1
is a device file for device 66,
no-rewind using density number 1. Since all density numbers have the
same parameters it does not matter which density number file is used.
What Next?
Once the device files have been created, you should confirm that your new
tape drive is working properly. Chapter 8, “Verifying the Installation”
provides instructions on backing up and restoring a sample file to test your
installation.