Specifications

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3-16
Cisco UCS C460 Server Installation and Service Guide
OL-22326-01
Chapter 3 Maintaining the Server
Installing or Replacing Server Components
LSI MegaRAID Card Beep Codes
Table 3-4 contains a summary of the LSI MegaRAID card beep codes. These beep codes indicate activity
and changes from the optimal state of your RAID array. For full documentation on the LSI MegaRAID
cards and the LSI utilities, refer to the LSI documentation for your card.
Replacing the SAS Riser Battery Backup Unit
Note This optional battery backup unit (BBU) is available only when using the optional LSI 9260-8i SAS
RAID controller card as the SAS riser. This BBU provides approximately 72 hours of battery backup for
the disk write-back cache DRAM in the case of sudden power loss.
To replace the SAS riser BBU, follow these steps:
Step 1 Remove the BBU that you are replacing. See Figure 3-11.
a. Power off the server as described in the “Shutting Down and Powering Off the Server” section on
page 3-6.
b. Slide the server out the front of the rack far enough so that you can remove the top cover.
Note You might have to detach cables from the rear panel to provide clearance.
Caution If you cannot safely view and access the component, remove the server from the rack.
c. Remove the top cover as described in the “Removing and Replacing the Server Top Cover” section
on page 3-7.
d. Remove the memory riser that sits closest to the BBU. See Replacing Memory Risers, page 3-23.
e. Slide the battery assembly toward the front of the chassis to disengage its retaining clips from the
chassis wall slots.
f. Disconnect the cable that is attached to the BBU.
Ta b l e 3-4 Summary of LSI MegaRAID Card Beep Codes
Beep Code LSI Firmware State Cause (Depending on RAID Level)
3 seconds on, 1 second off SPEAKER_OFFLINE_ENTRY • RAID 0: One or more drives offline.
• RAID 1: Two drives offline.
• RAID 5: Two or more drives offline.
• RAID 6: More than two drives offline.
1 second on, 1 second off SPEAKER_DEGRADED_ENTRY • RAID 1: A mirrored drive failed.
• RAID 5: One drive failed.
• RAID 6: One or two drives failed.
1 second on, 3 seconds off SPEAKER_HOTSPARE_ENTRY A hot spare drive has completed the rebuild process
and has been brought into the array.