Highpoint ROCKETRAID 2300 User's Guide download pdf (Page 9)

Introduction

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 230x

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.

Spare disk

A spare disk is a single disk that can be used to automatically rebuild a redundant

array in case of drive failure. Spare disks may also be members of a RAID array. Any

available space on these disks may be used to rebuild other broken arrays.

Legacy disk

Disks attached to the host adapter that contain valid partition tables will be identified

as “legacy” disks. A legacy disk attached to the host adapter can be accessed by the

operating system, but cannot be used to create RAID arrays. A legacy disk must be

initialized before assigning it to an array.

Supports RR1640 RAID arrays

The host adapter will recognize arrays created using the RocketRAID 1640 host

adapter. This feature simplifies hardware upgrade procedures, allowing RR1640 users

to take advantage of evolving SATA and bus technology, without having to recreate

arrays, and restoring data from backup.

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Highpoint ROCKETRAID 2300 User's Guide Page 9