RE: use of ISID

[Black_David@emc.com]

Back to Eddy's original message to add an important comment:

> Suppose you are one initiator going to only one target.
> Suppose you also want to login, do some I/O, logout, and
> later do the same.
>  
> Should the initiator use the same ISID for the two logins?

One situation in which this is crucial is when one expects
SCSI persistent reservations to behave consistently across the
logins. SCSI persistent reservations are associated with the
SCSI initiator port, so changing the ISID changes the port
and hence changes the behavior of the second session with
respect to any persistent reservations made by the first
session.

Thanks,
--David
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