Acnodes FES 5313 - Manual (Page 78)

Chapter 6
– RAID
6-1 RAID Levels
The system board allows configuring RAID on Serial ATA drives. It supports RAID 0, RAID 1, RAID 5
and RAID 10.
RAID 0 (Striped Disk Array without Fault Tolerance)
RAID 0 uses two new identical hard disk drives to read and write data in parallel, interleaved stacks.
Data is divided into stripes and each stripe is written alternately between two disk drives. This
improves the I/O performance of the drives at different channel; however it is not fault tolerant. A
failed disk will result in data loss in the disk array.
RAID 1 (Mirroring Disk Array with Fault Tolerance)
RAID 1 copies and maintains an identical image of the data from one drive to the other drive. If a
drive fails to function, the disk array management software directs all applications to the other
drive since it contains a complete copy of the drive s data. This enhances data protection and
increases fault tolerance to the entire system. Use two new drives or an existing drive and a new
drive but the size of the new drive must be the same or larger than the existing drive.
RAID 5
RAID 5 stripes data and parity information across hard drives. It is fault tolerant and provides
better hard drive performance and more storage capacity.
RAID 10 (Mirroring and Striping)
RAID 10 is a combination of data striping and data mirroring providing the benefits of both RAID 0
and RAID 1. Use four new drives or an existing drive and three new drives for this configuration.