On 6/7/2011 4:07 PM, Maurice Hilarius wrote:
On 6/7/2011 12:12 PM, Stefan G. Weichinger wrote:
Greetings, could you please advise me how to proceed?
On a server I have 2 RAID1-arrays, each consisting of 2 TB-drives:
..
Now I would like to move things to a more reliable RAID6 consisting of
all the four TB-drives ...
How to do that with minimum risk?
..
Maybe I overlook a clever alternative?
RAID 10 is as secure, and risk free, and much faster.
And will cause much less CPU load.
Well, with both a pair of RAID1 arrays and a pair of RAID-10 arrays, you
can lose 2 disks without losing data, but only if the right 2 disks fail.
With RAID6, any two of the four can fail without data loss.
(I still prefer RAID-10 over RAID-6 unless space is at an absolute
premium. But for a four-disk setup, net disk space is the same and it's
just a question of whether you want the speed of RAID-10 or the
reliability of RAID-6.)
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