Cisco UCS B440 Nota di installazione e manutenzione - Pagina 29

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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.