User manual

RAID 5
RAID 5 uses block-level striping with parity data distributed across all
member disks. It is also called Parity RAID. Every time a block is
written to a disk in a RAID 5 disk array, a parity block is generated
within the same stripe. A block is composed of many consecutive
sectors on a disk. A series of blocks (a block from each of the disks in
an array) is collectively called a "stripe." The parity information inside
the parity block is not the identical copy of the source data. It is generated via parity
calculation. RAID 5 mode provides decent data protection and fault tolerance. The speed of
operation is average in comparison to other RAID modes.
Three or four disks are supported by RAID 5. The storage capacity will become all disks
in total, minus 1. The capacity is limited to the size of the smallest disks.
If one of the disks fails, the data can be reconstructed through parity calculation once
the broken disk is replaced with a new one.
BIGROC 5C – 4Bay RAID - 1U Rack Mount System - User Manual Page | 22