Installing an SDLT or DLTtape Tape Drive into an HP-UX System
6
November 2002
6464118-01
2.3
Enabling Hardware Compression on the SDLT 320
Tape Drive
To enable hardware compression on the SDLT 320 tape drive, follow these steps:
1.
Type
ioscan -f
to obtain the instance number from the list for your tape drive,
for example,
0
[zero].
2.
Type
mksf -d stape -I
<instance #>
-b
<density code(in decimal)>
-c
<compression code(in decimal)>, for example:
mksf -d stape -I 0 -b 147 -c 16
This creates a device file in the format <c#t#d#D###C###>, for example:
c0t14d0D147C16
.
IMPORTANT:
This device node is created with a rewind at the end of backup.
To create a node with no rewind capability, and with the
Berkley format, type in the following:
n (non-rewind)
add
-n
b (Berkley)
add
-u
nb (non-rewind Berkley)
add
-u -n
The following is an example of a line of code to enable hardware compression on the
SDLT 320 tape drive:
tar -cvf /dev/rmt/ c#t#d#D###C## /name of folder
tar -cvf /dev/rmt/c0t14d0D147C16 /usr
Another example (with no rewind and the Berkley format):
tar -cvf -u -n /dev/rmt/ c#t#d#D###C## /name of folder
