Dell Area-51 ALX manual RAID Level, 026 /026

Models: Area-51 ALX Area-51

1 72
Download 72 pages 14.58 Kb
Page 26
Image 26
026/026

RAID Level 5

RAID level 5 uses data parity. RAID level 5 stripes both data and parity information across three or more drives. It provides data striping at the byte level and also stripe error correction information (rotating parity array). This results in excellent performance and good fault tolerance.

If a drive failure occurs, subsequent read and write operations are directed to the other surviving drives. A replacement drive can then be rebuilt using the data from the surviving drives. Since data is duplicated on the primary and additional drives, four 120-GB drives collectively have a maximum of 360-GB on which to store data.

CHAPTER 4: USING YOUR DESKTOP

RAID Level 10

RAID 10, a combination of RAID 1 and RAID 0, uses disk striping across mirrored disks. It provides high data throughput and complete data redundancy. RAID 10 can support up to eight spans, and up to 32 physical disks per span.

026/026

Page 26
Image 26
Dell Area-51 ALX manual RAID Level, 026 /026