24
SCSI SWITCH (FOR AS/400
®
)
Table 4-3. Results of Manual Switch Changes.
Position Change
What Happens
Auto to Host A
Host A “owns” the tape drive regardless of the current state of
the SCSI Switch.
If...
Then...
• Host B had ownership or an
• Its host interface is reset and
actively executing command
its process is aborted.
• A command is executing
• Host B’s AS/400 process
on Host B
will end with an error
condition.
Auto to Host B
Host B “owns” the tape drive regardless of the current state
of the SCSI Switch.
If...
Then...
• Host A had ownership or
• Its host interface is reset and
an actively executing
its process is aborted.
command
• A command is executing
• Host A’s AS/400 process
on Host A
will end with an error condition.
Host A to Auto
If...
Then...
• Host A has varied off the
• Host A relinquishes tape-
tape drive
drive ownership.
• Host A has not varied off
• Host B “owns” the tape
the tape drive.
drive.
• Ownership is relinquished
• Either host can arbitrate for
the tape drive.