Re: SSD Drives

John R Pierce <pierce@xxxxxxxxxxxx> · Fri, 04 Apr 2014 10:49:12 -0700



    On 4/4/2014 10:15 AM, Merlin Moncure
      wrote:

    
        2. Do I need both BBU on the RAID *and* capacitor on the SSD or just on one?
> Which one? I'm suspecting capacitor on the SSD and write-through on the
> RAID.

      
      You need both. The capacitor protects the drive, the BBU protects the
raid controller.


    note BBU's on raid cards are being replaced by 'flash-back' which is
    a supercap and flash memory backup for the raid card's write-back
    cache.  

    
    -- 
john r pierce                                      37N 122W
somewhere on the middle of the left coast