Consider the following limitations when you zone the IBM® Enterprise Storage Server® (ESS)
to the SAN Volume Controller.
To avoid a single point of failure on the IBM ESS, you must have a minimum of two SAN connections
from two separate adapter bays. The maximum number of IBM ESS SAN connections in the
SAN Volume Controller switch
zone is 16.
Note: The IBM ESS
provides ESCON®, FICON® and Ultra SCSI connectivity; however,
only a 1 or 2 Gb fibre-channel SAN attachment is supported by the SAN Volume Controller.