[K12OSN] Software RAID-1 with 3 Disks?

[Les Mikesell]

Onatawahtaw wrote:
> --- On Sun, 8/10/08, Krsnendu dasa <krsnendu108 at gmail.com> wrote:
> 
>> I have heard someone (Les Mikesell?) mirroring onto 3
>> drives, with the third
>> a usb removable drive. He then takes the third drive
>> elsewhere as a backup.
>> So it is possible. Writes are done to all three drives.
>> Reads from the
>> fastest drive. This way two drives can fail and the show
>> still goes on.
>>
>>
> 
> So would it be better to mirror all 3 drives in RAID-1, or set the third up as a hot spare?

The only reason to run all 3 drives mirrored would be if you 
periodically swap one out to keep as a backup.

-- 
   Les Mikesell
    lesmikesell at gmail.com