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The RAID/NVRAM battery on a BlueArc Mercury storage host is located in the front of the storage head, and can be replaced without down time. From what I can gather, after battery change, I have to enter its Linux mode, and enter "something".

Does anyone know what "this something" is?

Update

How to change a battery is not documented in the manuals, as it is normally a task that you pay a certified BlueArc engineer for. So how to do it is not documented in anything that is available to the owner.

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    Have you tried something aqs abstruse as "reading the documentation"? Seriously - what is next? How do I plug a computer into the power grid?
    – TomTom
    Feb 2, 2014 at 21:36
  • It looks like you've lost our goodwill, it's time to start doing what you should have done for some time and learn to find things out for yourself. You should also read this and the linked documents therin.
    – user9517
    Feb 2, 2014 at 21:48
  • I understand your concerns, but it not explained in the documentation. Please see my updated post.
    – Sandra
    Feb 2, 2014 at 22:08
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    To be quite fair, the answer to this does not reveal itself very quickly from a simple Google search.
    – Michael Hampton
    Feb 2, 2014 at 22:49
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    To be quite fair, sometimes a person has to know the proper path for getting certain problems resolved and questions answered, which is to firstly contact the vendor, not a question and answer web site.
    – joeqwerty
    Feb 2, 2014 at 23:39

1 Answer 1

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You call BlueArc (now Hitachi Data Systems) and book one of their engineers to come and fix your array.

You do have a support contract right? Right?

These things have support because of issues like this.

Incidentally, more for future reference, google keywords, etc. I found the answer after much searching.

The commands you have to run are:

  1. battery-fitted --field --confirm

  2. /etc/init.d/chassis-monitor restart

Source: http://www.hds.com/assets/pdf/hus-file-module-hardware-reference.pdf Page 45-47

Exact Google Search was: https://www.google.co.uk/search?q=hitachi+nas+cli+reference&oq=hitachi+nas+cli+reference&ie=UTF-8#q=hitachi+nas+cli+nvram+battery

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    @Sandra You're probably better off getting rid of it. My own personal opinion is that requiring a paid support call for something that ridiculously simple is an indication that you really don't want the product.
    – Michael Hampton
    Feb 2, 2014 at 22:25
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    About 2-3 years ago, I did the Hitachi NAS Administration certification. Replacing the NVRAM battery was not included in this course. Probably because it's not a user serviceable part.
    – Tom O'Connor
    Feb 2, 2014 at 22:26
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    @Sandra Finally found the real answer for you. Probably. Maybe.
    – Tom O'Connor
    Feb 2, 2014 at 22:42
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    That was significantly difficult to find. I suspect it probably wasn't meant to be found.
    – Tom O'Connor
    Feb 2, 2014 at 22:43
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    If you read that hardware guide in the link I edited into my answer, there's info on replacing the NVRAM battery.
    – Tom O'Connor
    Feb 2, 2014 at 22:46

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