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S e n d d o c u m e n t c o m m e n t s t o u c s - d o c f e e d b a c k @ c i s c o . c o m
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The Cisco RAID key is OEM version of LSI MegaRAID SAS 8880EM2 SGL. If a replacement is
needed, the stock LSI version will not work as a replacement as the physical connector is different, you
must order replacements from Cisco.
User information for RAID controllers is in the
To install a RAID license key, follow these steps:
Step 1
With the cover removed, locate the RAID controller daughter card. It is directly behind the BBU.
Step 2
Align the key as shown, and slide it onto the connector. This should be very much like installing a
jumper.
Figure 17
When fully installed, the "RAID KEY" label on the daughter card will be covered by the key.
Installing a RAID Battery Backup Unit (BBU)
The BBU is an intelligent battery backup unit that protects disk write cache data during a power loss on
the RAID controller for up to 72 hours. We recommend that you replace the BBU once per year or after
1,000 recharge cycles, whichever comes first. Verify whether BBU replacement is required by using the
show raid-battery detail command in the CLI.
To remove the RAID license key, perform the following procedure in reverse order.
To install a RAID BBU, follow these steps:
OL-22475-01
RAID 10 (RAID 1 and RAID 0 in spanned arrays): RAID 10 uses mirrored pairs of disks to provide
complete data redundancy and high throughput rates.
RAID 50 (RAID 5 and RAID 0 in spanned arrays): RAID 50 uses both parity and disk striping across
multiple disks to provide complete data redundancy and high throughput rates.
RAID 60 (RAID 6 and RAID 0 in spanned arrays): RAID 60 uses both distributed parity across two
parity disks and disk striping across multiple disks to provide complete data redundancy and high
fault tolerance.
Installing a RAID License Key
Cisco UCS B440 High Performance Blade Server Installation and Service Note
Cisco UCS Servers RAID
Memory and Performance
Guide.
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