SUPER MICRO Computer LSI 2108/2208 user manual RAID Levels Supported by the 2108/2208 Controller

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LSI 2108/2208 SAS MegaRAID Configuration Utility User's Manual

1-2 RAID Levels Supported by the 2108/2208 Controller

The LSI Embedded MegaRAID Software Configuration Utility adds RAID functions to enhance system efficiency and data security by supporting RAID 0, RAID 1, RAID 10, RAID 5, RAID 6, RAID 50 and RAID 60. .

Note: A maximum of 16 physical disk drives is supported for RAID.

RAID 0

RAID 0 (Integrated Striping) can greatly enhance hard disk I/O performance by strip- ing data across all disk drives in an array or drive group. This RAID configuration does not provide data redundancy, but it offers the best RAID performance and a high bandwidth. The following illustration provides a visual example of a RAID 0 drive group.

Drive A

Segment 1

Segment 3

Segment 5

Segment 7

Drive B

Segment 2

Segment 4

Segment 6

Segment 8

RAID 0 Example

RAID 1

RAID 1 (Integrated Mirroring) allows data to be simultaneously written to multiple drives. This RAID configuration increases data integrity by providing redundancy, but requires twice the amount of data storage capacity. RAID 1 requires 2 drives. The following illustration provides a visual example of a RAID 1 drive group.

RAID 1

RAID 1

Drive A

Drive B

Segment 1

Segment 1

 

Duplicate

Segment 3

Segment 3

 

Duplicate

Drive C

Drive D

Segment 2

Segment 2

 

Duplicate

Segment 4

Segment 4

 

Duplicate

RAID 1 Example

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Contents USER’S Manual Page Manual Organization About This ManualConventions Used in This Manual Europe Contacting SupermicroHeadquarters Asia-PacificPreface Table of Contents Features of the LSI 2108/2208 Controller Overview of the LSI 2108/2208 SAS ControllerHigh Performance 6Gb/s SAS InterfaceDrive Features Supported by the LSI MegaRAID Utility Functions of the LSI MegaRAID UtilityRAID 0 Example RAID Levels Supported by the 2108/2208 ControllerRAID 1 Example RAID 10 Example RAID 5 ExampleRAID 50 Example RAID 6 ExampleRAID 60 Example RAID RAID 6RAIDPage Using the LSI MegaRAID Configuration Utility Adapter SelectionLSI Configuration Utility Main Screen LSI MegaRAID Main ScreenController Properties Advanced Software OptionsController Selection Controller InformationDescription A.R.TNCQ Scan Devices Virtual DrivesVirtual Drive Properties Drives DrivesConfiguration Wizard Adding a Configuration Add ConfigurationAdd Drives Configuring Drives ManuallySpan Definition Virtual Drive Definition Configuration Preview Physical View Logical ViewLogical View Events Event InformationExit