D-Link DNS-346 User Manual page 69

D-Link DNS-346 USER'S MANUAL
RAID 5: RAID 5 provides data striping with distributed parity, which stores
information that can be used to reconstruct data. A RAID 5 array
will be the size of all the combined disks capacity less the capacity
of one disk, e.g. If there are 4x 80GB disks in the array, the arrays
capacity will be 240GB (3x80GB).
Implementing RAID 5 on the DNS-346 allows it to continue
operating even if one of the disks fails.
The diagram below indicates the operation of RAID 5:
RAID 10: RAID 10 combines the best features of RAID 0 and RAID 1 by
implementing a stripe of mirrors. RAID 10 requires a minimum of
four evenly sized disks.
The advantage of implementing RAID 10 is that it all but one of the
disks in any of the RAID 1 mirrors can fail without any loss of
data.
The diagram below indicates the operation of RAID 10:
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