Chapter 7: Technology Background
147
RAID 50 – Striping of Distributed Parity Logical Drives
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 each data stripe).
Figure 6. RAID 50 Striping of Distributed Parity logical drives.
RAID 50 logical drives on VTrak consist of 6 to 15 disk drives.
5b
5c
a parity
3a
3c
b parity
1a
1b
c parity
6b
6c
a parity
4a
4c
b parity
2a
2b
c parity
Data
Stripe
Distributed Parity
Disk Drives
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