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NAME

tape - information on filer tape interface

DESCRIPTION

The filer supports up to four local tape drives (tape drives connected directly to the system). The tape drive interface follows a UNIX-like device name allowing use of a rewind, norewind or unload/reload device. The format of a filer tape device name is crstud where:

c
use n to specify the norewind device, use u to specify the unload/reload device, or no flag to specify the rewind device. The norewind device will not rewind when the tape device is closed. The unload/reload device is used with sequential tape loaders and will unload the current tape volume and attempt to load the next tape volume (note that the server will wait up to one minute for the next volume to become ready before aborting the reload of the next volume). The rewind device will rewind the tape volume to beginning-of-tape on close.
rst
the rst portion of the device name is always present and specifies that you are requesting a SCSI tape device.
u
the logical unit number of the tape drive to use.
d
the density (or format) to use for tape write operations.

The density specifications for an Exabyte 8505 8mm drive are:

l Exabyte 8200 format, no compression

m Exabyte 8200 format with compression

h Exabyte 8500 format, no compression

a Exabyte 8500 format with compression

EXAMPLES

The sysconfig -t command will display the supported tape drives on your system and the device names associated with each tape device along with the device's density, or format. The following is an example of the output from a sysconfig command on a filer with one tape device attached:

toaster> sysconfig -t 

  Tape drive (0.6)  Exabyte 8505 8mm
  rst0l  -    rewind device,         format is: EXB-8200   2.5GB
  nrst0l -    no rewind device,      format is: EXB-8200   2.5GB
  urst0l -    unload/reload device,  format is: EXB-8200   2.5GB
  rst0m  -    rewind device,         format is: EXB-8200C  (w/compression)
  nrst0m -    no rewind device,      format is: EXB-8200C  (w/compression)
  urst0m -    unload/reload device,  format is: EXB-8200C  (w/compression)
  rst0h  -    rewind device,         format is: EXB-8500   5.0GB
  nrst0h -    no rewind device,      format is: EXB-8500   5.0GB
  urst0h -    unload/reload device,  format is: EXB-8500   5.0GB
  rst0a  -    rewind device,         format is: EXB-8500C  (w/compression)
  nrst0a -    no rewind device,      format is: EXB-8500C  (w/compression)
  urst0a -    unload/reload device,  format is: EXB-8500C  (w/compression)

SEE ALSO

na_dump(1) na_mt(1), na_sysconfig(1)

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