HP-RAID-CONTROLLER

root@server:/etc/vz/conf# hpacucli ctrl all show config detail

FIRMWARE UPGRADE REQUIRED: A firmware update is recommended for this controller
                           to prevent rare potential data write errors on a
                           RAID 1 or RAID 1+0 volume in a scenario of
                           concurrent background surface analysis and I/O write
                           operations.  Please refer to Customer Advisory
                           c01587778 which can be found at hp.com.


Smart Array P400i in Slot 0 (Embedded)
   Bus Interface: PCI
   Slot: 0
   Serial Number: PH84MQ7892
   Cache Serial Number: PA82C0H9SVMC4Y
   RAID 6 (ADG) Status: Enabled
   Controller Status: OK
   Hardware Revision: D
   Firmware Version: 4.12
   Rebuild Priority: Medium
   Expand Priority: Medium
   Surface Scan Delay: 15 secs
   Surface Scan Mode: Idle
   Post Prompt Timeout: 0 secs
   Cache Board Present: True
   Cache Status: Temporarily Disabled
   Cache Status Details: Cache disabled; low batteries.
   Cache Ratio: 25% Read / 75% Write
   Drive Write Cache: Disabled
   Total Cache Size: 256 MB
   Total Cache Memory Available: 208 MB
   No-Battery Write Cache: Disabled
   Cache Backup Power Source: Batteries
   Battery/Capacitor Count: 1
   Battery/Capacitor Status: Failed (Replace Batteries)
   SATA NCQ Supported: True