Highpoint ROCKETRAID 2300 User's Guide download pdf (Page 8)

Introduction

Array initialization

A redundant array (RAID5, RAID1, RAID10) needs to be initialized to ensure full

performance and reliability. Non-redundant arrays (RAID0, JBOD) do not need to be

initialized.

When you create a redundant array using the host adapter’s BIOS Configuration

Utility, it will create the array in un-initialized state. The initialization process can be

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.

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Highpoint ROCKETRAID 2300 User's Guide Page 8