D-Link ShareCenter Pro DNS-1200-05 User Manual page 140

Section 4 - Knowledge Base
RAID.5.provides.data.striping.with.distributed.parity,.which.stores.information.that.can.be.used.to.reconstruct.data..A.RAID.5.
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.ShareCenter.allows.it.to.continue.operating.even.if.one.of.the.disks.fails.
The.diagram.below.indicates.the.operation.of.RAID.5:
D-Link ShareCenter Pro 1200 User Manual 137