Chiligreen Home Server: Intel Rapid Storage Technology Manual de usuario descargar pdf (Pagina 9)

2.3

RAID

(

)

A RAID 1 array contains two hard drives where the data between the two is mirrored in real time to provide

good data reliability in the case of a single disk failure; when one disk drive fails, all data is immediately available

on the other without any impact to the integrity of the data.

The following table provides an overview of the advantages, the level of fault-tolerance provided and the typical

usage of RAID 1.

RAID 1 Overview

Hard Drives Required:

100% redundancy of data. One disk may fail, but data will

continue to be accessible. A rebuild to a new disk is

recommended to maintain data redundancy.

Excellent – disk mirroring means that all data on one disk is

duplicated on another disk.

App

Typically used for smaller systems where capacity of one disk

is sufficient and for any application(s) requiring very high

availability. Available in specific mobile configurations.

2.4

RAID

(Striping

with

)

A RAID 5 array contains three or more hard drives where the data and parity are striped across all the hard

drives in the array. Parity is a mathematical method for recreating data that was lost from a single drive, which

increases fault-tolerance.

The following table provides an overview of the advantages, the level of fault-tolerance provided and the

typical usage of RAID 5.

RAID 5 Overview

Hard

3-6

Higher percentage of usable capacity and high read performance

as well as fault-tolerance.

Excellent - parity information allows data to be rebuilt after

replacing a failed hard drive with a new drive.

App

Storage of large amounts of critical data. Not available

in mobile configurations.

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Chiligreen Home Server: Intel Rapid Storage Technology Manual de usuario Pagina 9