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Understanding raid concepts and terminology – HighPoint RocketRAID 3522 User Manual

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Congratulations

The following concepts and terminology is commonly used when describing the

functions of the RocketRAID 35xx Host Adapter.

Disk initialization

Initializing a disk writes necessary RAID configuration information to that disk. Disks

must be initialized before configuring them into RAID arrays. The initialization

process will destroy all data on the disk.

Disk Status

New

The disk contains no data and has not been initialized.

Initialized

The disk has been initialized and can be used for array creation.

Configured

The disk has been assigned to one or more arrays, or configured as a

spare disk.

Legacy

The disk was used on other controllers before use with the

RocketRAID 35xx (see legacy disk below).

Understanding RAID Concepts and Terminology

When you create a redundant array using the RocketRAID35xx controller’s BIOS

Configuration Utility, it will automatically start the initialization process. When

creating an array using the HighPoint RAID Management Console software, you can

specify an initialization option (Skip initialization, foreground and background).

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.

Array initialization

A redundant array (RAID1,RAID5, RAID6, RAID10) needs to be initialized to ensure

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

be initialized.

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