MicroNet Genesis V User's Guide download pdf (Page 15)

Introduction

1-9

RAID Management

The subsystem can implement several different levels of RAID technology.

RAID levels supported by the subsystem are shown below.

RAID

Level

Description

Min

Drives

0 + 1

Block striping is provide, which yields higher performance than with

individual drives. There is no redundancy.

Drives are paired and mirrored. All data is 100% duplicated on an

equivalent drive. Fully redundant.

Data is striped across several physical drives. Parity protection is used

for data redundancy.

Data is striped across several physical drives. Parity protection is used

for data redundancy.

Data is striped across several physical drives. Parity protection is used

for data redundancy. Requires N+2 drives to implement because of

two-dimensional parity scheme

Combination of RAID levels 0 and 1. This level provides striping and

redundancy through mirroring.

Combination of RAID levels 0 and 3. This level is best implemented on

two RAID 3 disk arrays with data striped across both disk arrays.

RAID 50 provides the features of both RAID 0 and RAID 5. RAID 50

includes both parity and disk striping across multiple drives.

RAID 50 is best implemented on two RAID 5 disk arrays with data

striped across both disk arrays.

RAID 60 combines both RAID 6 and RAID 0 features. Data is striped

across disks as in RAID 0, and it uses double distributed parity as in

RAID 6. RAID 60 provides data reliability, good overall performance and

supports larger volume sizes.

RAID 60 also provides very high reliability because data is still available

even if multiple disk drives fail (two in each disk array)

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MicroNet Genesis V User's Guide Page 15