D-Link DNR-326 User Manual - Page 82

What is RAID?, RAID 0

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Section 3 - Configuration What is RAID? RAID, short for Redundant Array of Independent Disks, is a combination of two or more disks with the aim of providing fault tolerance and improving performance. There are several different levels of RAID, with each providing a different method of sharing or distributing data amongst the drives. The NVR supports RAID levels 0 and 1. RAID 0 RAID 0 provides data striping, which spreads out blocks of data over both drives, but does not provide data redundancy. RAID 0 Although performance is improved, the lack of fault tolerance means that if one drive fails, all data in the array will be lost. RAID 1 RAID 1 provides mirroring over both disks, with the same read/write speed of a single disk. A RAID 1 array can only be as large as its smallest member disk. Because the data is stored on both disks, RAID 1 provides fault tolerance and protection, in addition to performance advantages. RAID 1 D-Link DNR-326 User Manual 78

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D-Link DNR-326 User Manual
Section 3 - Configuration
What is RAID?
RAID, short for Redundant Array of Independent Disks, is a combination of two or more disks with the aim of providing fault
tolerance and improving performance.
There are several different levels of RAID, with each providing a different method of
sharing or distributing data amongst the drives. The NVR supports RAID levels 0 and 1.
RAID 0
RAID 0 provides data striping, which spreads out
blocks of data over both 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.
RAID 0
RAID 1
RAID 1 provides mirroring over both disks, with the
same read/write speed of a single disk.
A RAID 1
array can only be as large as its smallest member
disk.
Because the data is stored on both disks,
RAID 1 provides fault tolerance and protection, in
addition to performance advantages.
RAID 1