4 Replies Latest reply on Aug 2, 2012 2:30 PM by dan_public2

    Raid Battery Backup?


      Hi.   I'm working through new disk subsystem issues (see links below for reference).  It looks like I have a new issue to address - raid battery backup.


      My current editing system uses a battery backup.   Other than some issues lately, it's worked well.   I'm getting a new Areca 1882ix raid controller soon.   The question is, do I need a battery backup specifically for the raid controller?  E.g. http://www.newegg.com/Product/Product.aspx?Item=N82E16816151111 Or is a system battery backup adequate?






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        • 1. Re: Raid Battery Backup?
          Harm Millaard Level 7



          The BBM, battery backup module from Areca is the most affordable solution. The alternative is something like this UPS: http://www.newegg.com/Product/Product.aspx?Item=N82E16842101294 which is vastly more expensive. If your electricity supply is generally very reliable, the UPS is overkill and the Areca BBM is a good solution. If you are in a region where snowstorms or hurricanes or flooding often take down electricity poles and you are out of electricity with some regularity, then the UPS is the way to go, till you get your own generator started.

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          • 2. Re: Raid Battery Backup?
            dan_public2 Level 1



            Thanks.   Fortunately we have pretty good power here.    When we loose power, it's typically for just a few seconds maybe twice a month.


            I have a small UPS hooked up now.   It's good for about 20 minutes.   But I'm a bit concerned that it will react fast enough for the raid controller.   I think I'll get that Areca BBM.  Cheap insurance.


            Now if Areca will get their buns in gear and bring out the PCIe 3.0 version of the 1882ix... 


            Thanks and regards,



            • 3. Re: Raid Battery Backup?
              JEShort01 Level 4



              Areca BBU's may have an additional benefit for performance. When I used to use 3Ware cards their firmware would allow for the fastest speed setting to be selected without the presence of a backup battery, however, I seem to think that Areca may only allow for some of the speed tweaks (higher levels of write caching) to be set when a BBU (backup battery unit) is present.


              BTW I chose to use both system UPS and Areca BBU and I am definitely happy with that choice.



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              • 4. Re: Raid Battery Backup?
                dan_public2 Level 1



                Thanks.  Good info about the speed tweaks.   I agree about the belt and suspenders approach.   I'll ensure my UPS is working or buy a new one, AND get the Areca BBU.





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