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duffmckagan ha scritto:
> On 8/13/05, Ulrik S. Kofod <usk@xxxxxxxxxxxx> wrote:
>
>>I have 3 disks that I want to setup in a raid 1, my questions is should I setup the
>>3rd disk as a spare-disk or should I mirror all 3 disks all the time?
>>
>>Will it perform *much* better to only mirror two and have the 3rd as a spare.
>>Is it not safer to mirror all 3 drives all the time ?
>>
>>
>
>
> I have seen some RAID -1 setups, but why 3 drives?
>
> In Raid - 1 Setup, if one drive fails, all others fail.
> So what is the point in using 3 drives in RAID-1?
>
> I am not an expert on this. But this is quite interesting.
> Can you clarify this a bit for me please?
with 3 disk you can use a raid 5, 2 disk for data striping with 1 disk
for distributed parity.
if you are a raid's beginner you must read and search document with
google...
just for say, i post one link to adaptec web site (that document
explaine the raid technology)
http://www.adaptec.com/pdfs/ACSP_RAID_Ch4.pdf
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