5-10 Sun StorEdge 3000 Family FRU Installation Guide • May 2004
5.1.6 Converting a Dual-Controller Array to a Single
Controller Array
If you convert a dual-controller array into a single-controller array, the Sun StorEdge
Configuration Service software does not automatically recognize the change and
reports that the SES and battery board from the removed controller are failed or not
present.
If you are running Sun StorEdge Configuration Service software and want to avoid
this message, follow the steps in the chapter titled “Maintaining the Array,” in the
Sun StorEdge 3000 Family Configuration Service User’s Guide. The section containing
the instructions is entitled, “Converting a Dual Controller Array to a Single
Controller Array.”
5.1.7 I/O Controller Replacement for a Single-
Controller or Powered-Off Array
If the array was powered off during the controller replacement or if you replaced a
controller in a single-controller configuration, perform the following important
steps.
1. Restore configuration settings from NVRAM if the new controller replaced an old
controller:
a. From the Main Menu, choose “system Functions,” choose “Controller
maintenance,” and press Return.
b. Choose “Restore nvram from disks” and press Return. Then select Yes to
confirm.
2. Set the parameter called the “Controller Unique Identifier” to the correct value:
a. From the firmware Main Menu, choose “view and edit Configuration
parameters,” then choose “Controller Parameters” and press Return.
b. From the Controller Parameters menu, choose “Controller Unique Identifier
<hex>” and press Return. Type the value 0 (to automatically read the chassis
serial number from the midplane) or type the hex value for the original serial
number of the chassis (used when the midplane has been replaced).
The Controller Unique Identifier is used to create Ethernet addresses and
worldwide names. The value 0 is immediately replaced with the hex value of the
chassis serial number. A nonzero value should be specified only if the chassis has
been replaced, but the original chassis serial number must be retained; this
feature is especially important in a Sun Cluster environment to maintain the same
disk device names in a cluster.
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