Seagate STU62001LW-S Installation Manual page 48

46 Viper 200 Installation Manual
command. If you are replacing a tape device with the same
SCSI ID you may want to delete the st devices from the
/dev/rmt directory (recommended).
When using commands that require a blocking factor such as
tar, ufsdump, ect., we suggest a minimum factor of 64. The
preferred factor is 128.
For commands that use density and tape size settings the
tape density is 124,000 bpi and the tape length is 1800 feet.
We suggest using the ufsdump/ufsrestore commands. These
commands automatically detect end of tape without the need
of the density and tape length settings.
To enable the st driver to turn on data compression when
writing data to tape use the 'c' option. For example, tar cf
/dev/rmt/0c would cause the Seagate Ultrium tape drive to
compress the data before writing the data to tape.