IBM System Storage N Series Implementation Manual page 41

General guidelines
for determining port
assignment
Chapter 2: Planning for Using Disk Shelves with a Gateway
Consider redundancy and load balancing when selecting which initiator ports to
use to connect to array LUNs and disk shelves: use redundant port pairs to access
storage. For example, on N5200, N5300, N5500, N5600 gateways, the redundant
port pairs are as follows:
◆
0a and 0c
◆
0b and 0d
If you are using 0a and 0c as the redundant port pair to access array LUNs, 0b
and 0d is the redundant port pair to access the disk shelf.
See the Data ONTAP High Availability Configuration Guide or Data ONTAP
Active/Active Configuration Guide and the appropriate hardware and service
guide for additional guidelines for selecting ports for connections to disk shelves.
See the gateway Installation Requirements and Reference Guide for information
about which ports are redundant on specific gateway models.
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