Chapter 4. Logical configuration performance considerations 101
3. Review requirements that need I/O port isolation, for example, remote replication Copy
Services, ProtecTIER®, and SAN Volume Controller. If possible try to split them as you
split hosts among hardware resources. Do not mix them with other Open Systems,
because they can have different workload characteristics.
4. Assign each required host connection to a different HA in a different I/O enclosure if
possible, balancing them across the left and right I/O enclosures:
– If the required number of host connections is less than the available number of I/O
enclosures (which can be typical for certain Open Systems servers), an equal number
of host connections must be assigned to the left ...