mu(4) — VAX
Name
mu − TM78/TU78/9 magnetic tape interface
Syntax
master mt0 at mba? drive ?
tape mu0 at mt0 slave 0
Description
Prior to Version 2.0, this device was referenced by mt(.).
The TM78/TU78/9 combination provides a standard tape drive interface as described in mtio(.). Only 1600 and 6250 bpi are supported; the TU78/9 runs at 125 ips and autoloads tapes.
Restrictions
Only the raw tape is supported.
Diagnostics
mu%d: no write ring.
An attempt was made to write on the tape drive when no write ring was present.
mu%d: not on line.
An attempt was made to access the tape while it was off line.
mu%d: hard error bn%d.
A tape error occurred at block bn. When possible, the driver will have retried the operation that failed several times before reporting the error. Additional register information may be gathered from the system error log file, /usr/adm/syserr/syserr.<hostname>.
mu%d: blank tape.
An attempt was made to read a blank tape (a tape without even end-of-file marks).
mu%d: off line.
During an I/O operation, the device was set off line.
Files
/dev/rmt???
/dev/nrmt???