Silicon Graphics InfiniteStorage 4000 Series System Upgrade Manual page 28

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Figure 6 Controller Service Action LEDs
The LEDs come on and go off intermittently for approximately 60 seconds
(possibly longer).
The seven-segment display shows the sequence OS+ Sd+ blank- to indicate
that the controller is performing Start-of-day (SOD) processing. After the
controller successfully completes rebooting, the seven-segment display shows the
tray ID matching the seven-segment display on the second controller. After this
time, you can discover the controller canister with the new battery by using the
storage management software.
8. Based on the LED status, perform one of these actions:
All of the Service Action Required LEDs are off, and the Array
—
Management Window indicates an Optimal status – Go to step 11.
Any of the Contoller-Drive tray's Service Action Required LEDs are on,
—
or the Controller Service Action Required LED is on – Go to step 9.
9. Perform one of the following actions (based on the Recovery Guru display):
The Recovery Guru displays the following message:
—
REC_CACHE_BACKUP_DEVICE_INSUFFICIENT_CAPACITY – The
controllers might require an additional power cycle to initialize the new
cache backup memory devices. Turn off the Power switches on both
controller canisters. Wait until all LED and seven-segment display activity
has stopped, and then turn on the Power switches to both controller canisters.
Go to step 10.
The Recovery Guru does not display an insufficient capacity message –
—
Check that the controller canister has been installed correctly. Reinstall the
controller canister if necessary. Go to step 10.
1. Controller Service Action Allowed LED (Blue)
2. Controller Service Action Required LED (Amber)