HP Workstation xw6000 Adaptec SCSI RAID 2120S: Software User's Guide - Page 11

RAID-10, drives in the array is available.

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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. RAID-10 RAID-1 Data 0 Data 2 Data 4 Data 6 Top-Level Arrays RAID-1 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 1 Data 3 Data 5 Data 7 Second-Level Arrays Drive Data 1 Data 3 Data 5 Data 7 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. 1-5

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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