Silicon Graphics InfiniteStorage 4000 Series System Upgrade Manual page 30

Removing the
Controller Canisters
from the E2612 or
E2624 Controller-Drive
Tray
22
5. Turn on power to the controller-drive tray.
ATTENTION Data loss or corruption might result if the steps in this upgrade
procedure are not followed correctly – You must upgrade the cache memory DIMMs
and the cache backup memory devices in both controller canisters in the controller tray
or the controller-drive tray. Otherwise, you receive event messages indicating that the
controllers have mismatched and incompatible configurations. This event might cause
the controllers to lock down.
NOTE Do not perform this upgrade procedure with the power turned on. This
procedure requires that you first set controller A offline to make sure that all of the
data, which is currently in cache on both controller canisters, is successfully written to
disk before the upgrade. After the cache memory data is written to disk, you must turn
off the power to both controller canisters.
NOTE Before you remove the controller canisters, make sure that you set controller
A offline, as described in the following steps, to make sure that all the data currently
in the cache in controller A is successfully written to disk before the upgrade. This step
also makes sure that the data currently in the cache in controller B is successfully
written to disk before you turn off the power to both of the controller canisters.
ATTENTION Possible hardware damage – To prevent electrostatic discharge
damage to the tray, use proper antistatic protection when handling tray components.
1. Gather support data about your storage array by using one of these methods:
SANtricity ES
Command line interface
2. Use the Locate function in the storage management software to identify the
controller canisters to upgrade as shown in the following figure.
From the Array Management Window toolbar, select
Monitor >> Health >> Collect Support Data. Then
name and specify a location on your system where
you want to store the support bundle.
Enter the following command on the command line:
save storageArray supportData
This command gathers comprehensive support data
about the storage array. For more information about
this command, refer to Command Line Interface and
Script Commands Programming Guide. Running this
command can temporarily impact performance on
your storage array.