query: new disk drive for VAX
Marc T. Kaufman
kaufman at polya.Stanford.EDU
Fri Oct 7 15:01:49 AEST 1988
In article <4559 at lynx.UUCP> m5 at lynx.UUCP (Mike McNally) writes:
>One interesting thing about Maxtors: we have a 5.25 inch full-height
>SCSI drive (170MB). It only responds to the "test unit ready" command
>when it's ready; otherwise, the command isn't acknowledged. Think
>about it.
>From ANS X3.121-1986 (p.62):
"The TEST UNIT READY command (table 7-2) provides a means to check if the
logical unit is ready. This is not a request for a self test. If the logical
unit would accept an appropriate medium-access command without returning
CHECK CONDITION status, this command shall return a GOOD status."
See -- it says nothing about what to do if the drive is not ready :-)
I expect that the correct response would be BUSY.
Marc Kaufman (kaufman at polya.stanford.edu)
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