Knowledge Base; What.is.raid - D-Link ShareCenter Quattro DNS-345 User Manual

Section 5 - Knowledge Base
RAID, short for Redundant Array of Independent Disks, is a combination of two or more disks with the aim of providing fault tolerance and performance improvement. There
are several different levels of RAID, with each one providing a different method of sharing or distributing data amongst the drives. The ShareCenter™ Quattro supports JBOD,
RAID 0, RAID 1, and Standalone.
RAID 0
RAID 0 provides data striping, which spreads out blocks
of data over all the drives, but does not provide data
redundancy.
Although performance is improved, the lack of fault
tolerance means that if one drive fails, all data in the array
will be lost.
D-Link ShareCenter Quattro DNS-345 User Manual

Knowledge Base

What is RAID?
RAID 1
RAID 1 provides mirroring over multiple disks, with the same
read/write speed of a single disk. A RAID 1 array can only be as
large as it's smallest member disk.
Because the data is stored on multiple disks,
RAID 1 provides fault tolerance and protection, in addition to
performance advantages.
244