Qlogic iSR6200, Software Manual

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7–Performance and Best Practices
Optimal Configuration and Zoning
7-2 ISR654608-00 B
LUNs belonging to different RAID groups (sets of physical drives) or on a
different array controller on the storage array should be scheduled to run
simultaneously. To improve write performance, disable write cache settings
on the destination array.
To complete data migration jobs faster, run the migration job during off-peak
load hours. For online jobs, the source and destination LUNs are
synchronized until the migration job is acknowledged.
Optimal Configuration and Zoning
In order to get the best performance from the router, configure your system as
follows:
In the physical topology, configure a single switch with two ports each from
the router, source array, and destination array.
Set the zoning such that each router port sees both controller ports from the
source array and the destination array.
Balance the LUNs on the source and destination arrays between the two
controller ports.
Figure 7-1 shows a topology that provides maximum performance.
NOTE:
QLogic recommends that you do not simultaneously run more than four data
migration jobs.