IBM N Series, Implementation Manual

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Appendix B: S etting up and Managing Multipath S torage 71
Configuring the gateway environment variable for Multipath
Storage
When you need to
set the environment
variable
The following table summarizes when you need to set the gateway environment
variable for Multipath Storage.
Attention
If you need to set the environment variable for Multipath Storage, be sure to set
the variable on each node before you connect the new disk shelf to it.
Setting the
environment
variable This procedure describes how to set the gateway required environment variable,
called
fc-non-array-adapter-list
, to identify the gateway initiator ports that
you are connecting to the disk shelf. To set the environment variable for
Multipath Storage for the gateway, complete the following steps.
Note
In the following procedure, assume that the nodes in the HA pair are named vs1
and vs2.
If you are... Then...
Adding a disk shelf to a new loop You must set this environment
variable on both nodes before
connecting the disk shelf to the
gateway initiator ports.
Adding a disk shelf to an existing
loop (daisy-chaining) You do not need to configure the
gateway environment variable for
Multipath Storage again for the loop.