db1067 is showing really high temperature on the BBU
```
root@db1067:~# megacli -AdpBbuCmd -a0
BBU status for Adapter: 0
BatteryType: BBU
Voltage: 3957 mV
Current: 0 mA
Temperature: 76 C
Battery State: Optimal
BBU Firmware Status:
Charging Status : None
Voltage : OK
Temperature : High
Learn Cycle Requested : No
Learn Cycle Active : No
Learn Cycle Status : OK
Learn Cycle Timeout : No
I2c Errors Detected : No
Battery Pack Missing : No
Battery Replacement required : No
Remaining Capacity Low : No
Periodic Learn Required : No
Transparent Learn : No
No space to cache offload : No
Pack is about to fail & should be replaced : No
Cache Offload premium feature required : No
Module microcode update required : No
BBU GasGauge Status: 0x0238
Relative State of Charge: 100 %
Charger Status: Complete
Remaining Capacity: 542 mAh
Full Charge Capacity: 542 mAh
isSOHGood: Yes
Battery backup charge time : 0 hours
BBU Capacity Info for Adapter: 0
Relative State of Charge: 100 %
Absolute State of charge: 0 %
Remaining Capacity: 542 mAh
Full Charge Capacity: 542 mAh
Run time to empty: Battery is not being charged.
Average time to empty: 43 Min.
Estimated Time to full recharge: Battery is not being charged.
Cycle Count: 1
Max Error = 0 %
Remaining Capacity Alarm = 0 mAh
Remining Time Alarm = 0 Min
BBU Design Info for Adapter: 0
Date of Manufacture: 07/18, 2011
Design Capacity: 90 mAh
Design Voltage: 0 mV
Specification Info: 0
Serial Number: 0
Pack Stat Configuration: 0x0000
Manufacture Name:
Firmware Version : 0148 03
Device Name:
Device Chemistry:
Battery FRU: N/A
Module Version = 0148 03
Transparent Learn = 1
App Data = 0
BBU Properties for Adapter: 0
Auto Learn Period: 90 Days
Next Learn time: None Learn Delay Interval:0 Hours
Auto-Learn Mode: Disabled
Exit Code: 0x00
```
The policy for the RAID is WriteThru at the moment , even though the BBU isn't showing anything bad.
```
root@db1067:~# megacli -ldinfo -l0 -a0 | grep Policy
Default Cache Policy: WriteBack, ReadAheadNone, Direct, No Write Cache if Bad BBU
Current Cache Policy: WriteThrough, ReadAheadNone, Direct, No Write Cache if Bad BBU
Default Access Policy: Read/Write
Current Access Policy: Read/Write
Disk Cache Policy : Disk's Default
Default Power Savings Policy: Controller Defined
Current Power Savings Policy: None
```
Given that this is the s1 candidate master, it is probably better to just replace the BBU and be on the safe side
I have been talking to @Cmjohnson and he is going to check if we have spare BBUs