Highpoint ROCKETRAID 2314 Guide de l'utilisateur télécharger pdf (Page 9)

Introduction

completed after installing the driver and management software.

When creating an array using the HighPoint RAID Management Console software,

you can specify an initialization option (Skip initialization, foreground and

background).

Foreground initialization

Foreground initialization will zero-out all data on the array. The array is not accessible

by the operating system until initialization is complete.

Background initialization

Background initialization allows the array to be used immediately. For RAID1 and

RAID10 arrays, initialization will results in data being duplicated identically to the

mirror pair. For RAID5 arrays, initialization will result in parity being generated from

all array members.

Note: An un-initialized RAID1 or RAID10 array can still provide redundancy in case

of a disk failure. A RAID5 array, however, is not fault-tolerant until initialization is

finished.

Online Capacity Expansion (OCE)

This feature allows disks to be added to existing RAID arrays, in order to increase the

array’s capacity, without fear of data loss. Any number of disks can be added to an

array, at any time. Data can be accessed and utilized even while being redistributed.

Online RAID Level Migration

This term describes the ability to change one type of array (RAID level), into a

different type of array (changing a RAID 1 array into a RAID 10 array for example).

Data is still accessible during the migration process, and a base level of security is

still active.

OCE, ORLM and the RocketRAID 231x

These host adapters support both Online Capacity Expansion (OCE), and Online

RAID Level Migration (ORLM). Both features are supported by a single function - an

array can be transformed from one RAID level to another RAID level while simulta-

neously being resized, even under I/O load.

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Highpoint ROCKETRAID 2314 Guide de l'utilisateur Page 9