HP LTO-4 Technical Reference Manual page 35

If for some reason you cannot upgrade to the minimum patch level, you can make the following file
modifications to enhance performance:
1. In the file /kernel/drv/st.conf, after these lines:
########
# Copyright (c) 1992, by
#ident
add the following depending on which version of operating system you are installing (there are
6 significant spaces between HP and Ultrium in line 2):
for Solaris 8 without st patch:
tape-config-list =
"HP
HP_LTO_GEN_4 = 1,0x36,0,0xd639,4,0x00,0x42,0x44,0x46,3;
name="st" class="scsi" target=X lun=0;
where X is the SCSI target address of the device you have attached.
for Solaris 9 and 10 (and 8 with st patch):
tape-config-list =
"HP
HP_LTO_GEN_4 = 2,0x3B,0,0x18659,4,0x00,0x42,0x44,0x46,3,60,1200,
600,1200,600,600,18000;
name="st" class="scsi" target=X lun=0;
where X is the SCSI target address of the device you have attached.
See "HP-data values" on page 34
If you are replacing an existing tape device on the same SCSI ID, remove the contents of the
2.
/dev/rmt directory as follows:
# cd /dev/rmt
# rm *
3. Instead of rebooting the device, follow these steps.
a. Find the kernel module ID:
# modinfo | grep "st ("
96 60dcc000 cdb0 33 1 st (SCSI Sequential Access Driver)
In this example the ID is 96.
b. Unload the kernel module:
# modunload -i 96
c. Load the kernel module back in:
# modload -p drv/st
d. Rebuild the device paths:
devfsadm -C
devfsadm -i st
For further details, see "How do you load st.conf changes without rebooting," SunSolve
document 18010, on
http://sunsolve.sun.com/search/document.do?assetkey=1-9-18010-1&searchclause=18010
This link is valid for registered SunSolve users with a valid Sun Service Plan.
HP LTO Ultrium 4 drives technical reference manual, volume 5: UNIX, Linux and OpenVMS configuration guide
"@(#)st.conf
Ultrium 4","HP Ultrium LTO 4","HP_LTO_GEN_4";
Ultrium 4","HP Ultrium LTO 4","HP_LTO_GEN_4";
Sun Microsystems, Inc.
1.6 93/05/03 SMI"
below for the values of the parameters in these lines.
33