ASRock X79 Extreme11 LSI SAS2 Integrated RAID Solution User Guide - Page 10

Chapter 2: Overview of Integrated RAID Mirrored Volumes

|

Operation of Mirrored Volumes

SAS2 Integrated RAID Solution User Guide

Page 10

LSI Corporation Confidential

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August 2010

Figure 3:

Integrated Mirroring Enhanced with Three Disks

You can configure an Integrated Mirroring + Striping volume with an even number of

disks, ranging from four minimum to ten maximum. The following figure shows the

logical view and physical view of an Integrated Mirroring + Striping volume with four

mirrored disks. The firmware writes each mirrored stripe to a disk and mirrors it to an

adjacent disk.

RAID 10

is another term for this type of mirrored/striped configuration.

Figure 4:

Integrated Mirroring + Striping with Four Disks

The LSI SAS2 BIOS configuration utility enables you to create mirrored volumes during

initial setup and to reconfigure them in response to hardware failures or changes in

the environment.

CAUTION:

The SAS2 BIOS CU deletes all existing data from the disks drives when you

select them to use for a mirrored volume.

3_00008-00

Physical View

Logical View

Mirrored Stripe 1

Mirrored Stripe 2

Mirrored Stripe 3

Mirrored Stripe 4

Mirrored Stripe N

Mirrored Stripe 1

Mirrored Stripe 2'

Mirrored Stripe 4

Mirrored Stripe 5'

Mirrored Stripe N-1'

+

Mirrored Stripe 1'

Mirrored Stripe 3

Mirrored Stripe 4'

Mirrored Stripe 6

Mirrored Stripe N

+

Mirrored Stripe 2

Mirrored Stripe 3'

Mirrored Stripe 5

Mirrored Stripe 6'

Mirrored Stripe N’

Physical View

Logical View

Mirrored Stripe 1

Mirrored Stripe 2

Mirrored Stripe 3

Mirrored Stripe 4

Mirrored Stripe N

Mirrored Stripe 1

Mirrored Stripe 3

Mirrored Stripe 5

Mirrored Stripe 7

Mirrored Stripe N-1

+

Mirrored Stripe 1'

Mirrored Stripe 3'

Mirrored Stripe 5'

Mirrored Stripe 7'

Mirrored Stripe N-1'

+

Mirrored Stripe 2

Mirrored Stripe 4

Mirrored Stripe 6

Mirrored Stripe 8

Mirrored Stripe N

3_00009-00

+

Mirrored Stripe 2'

Mirrored Stripe 4'

Mirrored Stripe 6'

Mirrored Stripe 8'

Mirrored Stripe N’

Section	Page
SAS2 Integrated RAID Solution User Guide	1
Introduction to the Integrated RAID Solution	5
1.1 Overview	5
1.2 Benefits and Features	6
1.2.1 Host Interface	6
1.2.2 Metadata Support	6
1.2.3 SMART Support	6
1.2.4 Fusion-MPT Support	6
Overview of Integrated RAID Mirrored Volumes	7
2.1 Introduction	7
2.2 Integrated Mirroring and Integrated Mirroring Enhanced Features	7
2.3 Operation of Mirrored Volumes	8
2.4 Mirrored Volume Features	11
2.4.1 Resynchronization with Concurrent Host I/O Operation	11
2.4.2 Hot Swapping	11
2.4.3 Hot Spare Disk	11
2.4.4 Online Capacity Expansion	11
2.4.5 Media Verification	11
2.4.6 Disk Write Caching	12
2.4.7 NVSRAM Usage	12
2.4.8 Background Initialization	12
2.4.9 Consistency Check	12
2.4.10 Make Data Consistent	12
Creating Mirrored Volumes	13
3.1 Mirrored Volume Configuration Overview	13
3.2 Creating Mirrored Volumes	13
3.2.1 Creating an Integrated Mirroring Volume	14
3.2.2 Creating an Integrated Mirroring Enhanced or Integrated Mirroring + Striping Volume	15
3.2.3 Expanding an Integrated Mirroring Volume with OCE	16
3.3 Managing Hot Spare Disks	17
3.3.1 Creating Hot Spare Disks	17
3.3.2 Deleting Hot Spare Disks	18
3.4 Other Configuration Tasks	19
3.4.1 Viewing Volume Properties	19
3.4.2 Running a Consistency Check	19
3.4.3 Activating an Array	20
3.4.4 Deleting an Array	20
3.4.5 Locating Disk Drives in a Volume	21
3.4.6 Selecting a Boot Disk	21
Overview of Integrated Striping	23
4.1 Introduction	23
4.2 Integrated Striping Features	23
4.3 Integrated Striping Description	24
Creating Integrated Striping Volumes	25
5.1 Integrated Striping Configuration Overview	25
5.2 Creating Integrated Striping Volumes	25
5.3 Other Configuration Tasks	27
5.3.1 Viewing Volume Properties	27
5.3.2 Activating an Array	27
5.3.3 Deleting an Array	28
5.3.4 Locating Disk Drives in a Volume	28
5.3.5 Selecting a Boot Disk	29
Using the SAS2 Integrated RAID Configuration Utility	31
A.1 Hardware and Software Requirements	31
A.1.1 Controller Support	31
A.1.2 Operating System and Software Support	32
A.2 Interface Description	32
A.3 Commands	32
A.3.1 Common Command-Line Parameters	33
A.3.2 CREATE Command	33
A.3.3 DELETE Command	35
A.3.4 DISPLAY Command	35
A.3.5 HOTSPARE Command	37
A.3.6 STATUS Command	38
A.3.7 LIST Command	39
A.3.8 MFGPAGE Command	40
A.3.9 CONSTCHK Command	40
A.3.10 ACTIVATE Command	40
A.3.11 LOCATE Command	41

ASRock X79 Extreme11 LSI SAS2 Integrated RAID Solution User Guide - Page 10

Integrated Mirroring Enhanced with Three Disks, Integrated Mirroring + Striping

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