On 29/03/13 14:15, Roy Sigurd Karlsbakk wrote:
Hi all,
I've a two disk RAID-10 (far 2, I guess).
You can't grow a RAID-10…
I know, I've to replace a disk, non add.
I just don't understand why anyone would create a two-drive RAID-10,
losing the flexibility of a mirror, and gaining nothing (since it's
only on two drives)
With "far" layout, linux RAID-10 on two harddisks will give you the
safety of RAID-1 mirroring with /faster/ than RAID-0 speeds on reads.
(Writes are often a little slower than standard RAID-1 due to more head
movement, but slow writes can be buffered, while fast reads mean a
faster machine.)
Yes, you lose a bit of flexibility, and it would be very nice if RAID-10
could be re-shaped, grown, etc. But for a desktop system in particular,
RAID-10,far2 is the best you can get for two disks.
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