Determining Which Tape Ddevice to Use on a Solaris[TM] 2.x Operating Environment System.
Below is an explanation of the behavior of each device file from the "st" man page:
st(7D) Devices st(7D)
/dev/rmt/[0- 127][l,m,h,u,c][b][n]
where l,m,h,u,c specifies the density (low,
medium, high, ultra/compressed), b the optional
BSD behavior (see mtio(7I)), and n the optional
no rewind behavior. For example, /dev/rmt/0lbn
specifies unit 0, low density, BSD behavior, and
no rewind.
For 1/2" reel tape devices (HP-88780), the den-
sities are:
l 800 BPI density
m 1600 BPI density
h 6250 BPI density
c data compression
(not supported on all modules)
For helical-scan tape devices (Exabyte
8200/8500/8505):
l Standard 2 Gbyte format
m 5 Gbyte format (8500, 8505 only)
h,c 5 Gbyte compressed format (8505 only)
For 4mm DAT tape devices (Archive Python):
l Standard format
m,h,c data compression
For QIC-150 tape devices (Archive Viper):
l QIC-150 Format
m QIC-150 Format
h QIC-150 Format
c QIC-150 Format
For QIC-24 tape devices (Emulex MT-02):
l QIC-11 Format
m QIC-24 Format
h QIC-24 Format
c QIC-24 Format
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