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Raid-10, Raid-10 1-5, 5 introduction – HP Workstation xw8000 User Manual

Page 11: Top-level arrays second-level arrays

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1-5

Introduction

RAID-10

A RAID-10 is an example of a dual-level array and is created by
using two or more equal-sized RAID-1s to create a RAID-0.

The top level RAID-0 shares the load among the second level
RAID-1s, improving both read and write performance. Since
second level arrays are RAID-1, only half the total capacity of the
drives in the array is available.

RAID-10

Data 1

Data 3

Data 5

Data 7

Drive

Data 1

Data 3

Data 5

Data 7

Drive

Data 0

Data 2

Data 4

Data 6

Drive

Data 0

Data 2

Data 4

Data 6

Drive

Data 0

Data 2

Data 4

Data 6

RAID-1

Data 1

Data 3

Data 5

Data 7

RAID-1

Top-Level Arrays

Second-Level Arrays

UG.book Page 5 Saturday, October 26, 2002 12:08 PM