LaCie Ethernet Disk RAID
(Firmware version 1.4)
User Manual
page
RAID and Storage Policies
10.5. RAID 10 (RAID 1 + 0)
RAID 10 is similar to RAID 1, but rather than hav-
ing one disk mirror to one other disk, two disks mirror
to the two other disks.
You can use RAID 10 only if your Ethernet Disk
RAID has four disks. The disks in the first two slots
constitute the first pair, and the disks in the second two
slots constitute the second pair. In each pair, the smaller
of the two disks is used for data, and the larger of the
two disks is used as the mirror.
If one disk in the pair fails, the other disk continues
to make its data available.
CONTROLLER
This diagram repre-
sents a RAID 10 array.
Data is striped on two
disks and those disks
are mirrored by the
other two.
A1
A3
A5 A5
A3
A1
A2
A4
A6 A6
A4
A2
Fig. 10.5.
