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INTRODUCTION

1.5.3 RAID 10

RAID 10 is a combination of RAID 0 and RAID 1, combing stripping

with disk mirroring. RAID Level 10 combines the fast performance

of Level 0 with the data redundancy of Level 1. In this conﬁgura-

tion, data is distributed across several disk drives, similar to Level

0, which are a stripe across a number of mirrored sets for data

protection. RAID 10 provides the highest read/write performance

of any of the Hybrid RAID levels, but at the cost of doubling the

required data storage capacity.

1.5.4 RAID 3

RAID 3 provides disk striping and complete data redundancy though

a dedicated parity drive. RAID 3 breaks up data into smaller blocks,

calculates parity by performing an exclusive-or on the blocks, and

then writes the blocks to all but one drive in the array. The parity

data created during the exclusive-or is then written to the last drive

in the array. If a single drive fails, data is still available by com-

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Areca ARC-1230 Manual de usuario Pagina 18