In order to avoid overheating the card, you must install the BBU on a special bracket that is located on the top of the power supply bay. When you install an LSI MegaRAID card and the optional BBU in this server, do not install the BBU on top of the card as described in the LSI instructions. Note: Server shutdown followed by AC power removal is needed before the BBU is swapped.
Refer to the Maintaining the Server article for information about how to replace the BBU on a C-210 server. Refer to the Cisco UCS B440 M2 Blade Server Spec Sheet for more information. Please perform a graceful shutdown of the server before you replace the BBU. Slide the BBU unit in partially, and align the ejector lever.Ĭaution: Hot swapping the BBU is not supported.Remove the blanking plate, if present, from the BBU bay at the right of the server.Without a graceful shutdown, data may be permanently lost. With UCS Manager, perform a graceful shutdown of the server.In order to install a RAID BBU, complete these steps: Note: In order to remove the RAID license key, perform this procedure in reverse order. Verify whether BBU replacement is required with the use of the the show raid-battery detail command in the CLI. Cisco recommends that you replace the BBU once per year or after 1,000 recharge cycles, whichever comes first. 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. Refer to Installing a RAID Battery Backup Unit (BBU) for more information. This section is an excerpt on how to replace the BBU in a B440. Pack is about to fail & should be replaced : NoĬache Offload premium feature required : No Here is the MegaCLI command line: bash$/opt/MegaRAID/MegaCli/MegaCli64 -AdpBbuCmd -a0 -NoLogĬIMC shell command line, which shows a good battery: TAC-xx-sl2-56-bmc /chassis/storageadapter # show bbu detail Here is the CIMC shell command line, which shows a bad battery: ucs-c200-m2 /chassis/storageadapter # show bbu detail However, it is not a bad BBU.īBUs can be monitored with CIMC, MegaCLI utility, and LSI Mega RAID Storage Manager (MSM). Note: Below 48 hours + disabled the cache mode. These two values must be above 675 mAh.Missing: Also suspect that no BBU is present.Unknown: The status of the BBU is unknown, so a physical inspection is needed.Here is what you check for in the command output: Here is an example that uses the MegaCLI command utility in order to pull BBU information: MegaCli]#. If your network is live, make sure that you understand the potential impact of any command. All of the devices used in this document started with a cleared (default) configuration. The information in this document was created from the devices in a specific lab environment.
This document is not restricted to specific software and hardware versions. Avago LSI Redundant Array of Independent Disks (RAID) controllers.Internet Small Computer Systems Interface (iSCSI).See the Introduction to LSI's MegaCLI Utility article for the download link.Ĭisco recommends that you have knowledge of these topics: In order to run the Avago LSI MegaCLI commands, you must first download and install the MegaCLI utility. Both the Cisco Integrated Management Controller (CIMC) CLI and the Avago LSI CLI are used in this document. This document describes how to monitor and replace the Backup Battery Unit (BBU) in both the Unified Computing System (UCS) B and UCS C Series servers.