Raid 50 - striping of distributed parity, Raid 50 – striping of distributed parity – Promise Technology FASTTRAK SX4300 User Manual
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Chapter 5: Concepts
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RAID 50 – Striping of Distributed Parity
RAID 50 combines both RAID 5 and RAID 0 features. Data is striped across
disks as in RAID 0, and it uses distributed parity as in RAID 5. RAID 50 provides
data reliability, good overall performance and supports larger volume sizes. RAID
50 also provides high reliability because data is still available even if two disk
drives fail (one in the 1-3-5 data stripe, the other in the 2-4-6 data stripe, as
shown in the example below).
Figure 5. RAID 50 Striping of Distributed Parity logical drives
RAID 50 logical drives on the FastTrak SX8300 consist of 6 or 8 disk drives.
The FastTrak SX4300 does not support enough disk drives to create a RAID 50
logical drive.
Data
Stripe
Distributed Parity
Disk Drives