multiple connections tidbits

[Prasenjit Sarkar <psarkar24@yahoo.com>]

IBM's current multiple connection solution over
SCSI/Fibre Channel involves layering a "multiple
connections" SCSI filter driver over parallel
scsi/fibre channel transport. The filter driver
solution costs immensely much more
than the transport driver (I'm costing the cost of
the HBAs towards the transport as the FC/SCSI driver
is given away for free). While cost cannot determine
complexity, it gives some idea - the number of
man-years spent on the product was also considerable.

Additionally, I was given to understand that 
SCSI "mulitple connections" filter driver + 
simple iSCSI transport driver should work in 
principle and would be the shortest path.

Feedback from other enterprise storage vendors
(EMC, HP, Hitachi, Sun ......) about their
current multiple connections solutions would be
welcome.

Regards,
Prasenjit



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