HP Proliant alert message Accelerator Board Status battery failure

Received an message from hp proliant alrert.:

Source:             Storage Agents
Type:               Warning
Category:           (4)

Description:
An 'Accelerator Board Battery Failed' trap signifies that the agent has detected a battery failure associated with the array accelerator cache board.

Details:
Battery Status 'FAILED'
MEMORY 131072
Controller Slot # 2
Model 32

what does this meesage mean and what is going to happen? what's the step I need to take?
okamonAsked:
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NikolasGConnect With a Mentor Commented:
Hi again,
So in general high performance raid controllers use write back cache policy
When using write-back caching, the controller sends a write-request completion signal as soon as the data is in the controller cache but has not yet been written to disk. Write-back caching may provide improved performance since subsequent read requests can more quickly retrieve data from the controller cache than they could from the disk. In order to provide data safety it utilizes a battery to be able to hold the data in case of power loss

The controller that you have looks like that : http://www.server-unit.ru/tekhopisaniya/hp-proliant-servers/proliant-storage/smart-array-controllers/serial-controllers/hp-smart-array-e200-controller/

and should have on it a battery that looks like that : http://www.buy.com/prod/new-sandisk-sansa-battery-for-e200-e250-e260-e270-e280/216545177.html

You should just change the battery and everything would be back to normal.
Hope it helps.
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amaraa12Commented:
You need to change battery or upgrade accelerator firware.

If you write what kind of HP Proliant server i can give you detailed information
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NikolasGCommented:
Hi,
This message informs you about the failure of the battery on your raid controller. Usually this also means that some features like cached write backs are disabled also, so depending on the  server usage you could experience some delays regarding the IO jobs.
You could verify the problem checking the messages from the controller during boot time.

This is usually a spare part that you need to change every about 2 years as a precaution.
You should contact your hardware provider so you can order the spare part.
If you provide more hardware details we could be more precise.
Hope it helps
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okamonAuthor Commented:
this is proliant ml350 G5 with Smart Array E200i Controller

so you mean is the Battery on the raid controller run out? is it the one in the picture written broadcom? (I am not sure if this is exactly the same model, I just grabbed on on google search)  so I just need to take out the baterry and replace with a new one?

so if I don't reaplce the battery the read and write speed on the hard drive would decrease right? is that the only impact?raid controller
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NikolasGConnect With a Mentor Commented:
As an add on I found your raid controllers manual.
On page 19-20 it has instructions on how to replace the battery pack.
c00688683.pdf
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TricksGuideConnect With a Mentor Commented:
Replace the battery so that controller can do Write back. This will basically help you a lot if server is doing more "Writing of data". If you wish, you may also upgrade the cache to 128 MB.

My recommendation will be replace the battery and everything should be normal.

Regards
SiRu
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