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SAS2 Integrated RAID Solution User Guide

Chapter 1: Introduction to the Integrated RAID Solution

|

Overview

LSI Corporation Confidential

|

August 2010

Page 5

Chapter 1

1.1 Overview

The LSI Integrated RAID solution provides cost benefits for the server or workstation
market that requires the extra performance, storage capacity, and/or redundancy of a
RAID configuration. The LSI Integrated RAID solution includes the following RAID
features:



The Integrated Mirroring solution, which provides features of RAID 1



The Integrated Mir Striping solution, which provides features of RAID 10



The Integrated Mirroring Enhanced

solution, which provides features of RAID 1

Enhanced (RAID 1E)



The Integrated Striping solution, which provides features of RAID 0

By simplifying the configuration options and by providing firmware support in its SAS2
host adapters, LSI can offer the Integrated RAID solution at a lower cost than a
hardware RAID implementation.

LSI Fusion-MPT™ firmware supports Integrated Mirroring volumes, Integrated Mirroring
+ Striping volumes, Integrated Mirroring Enhanced volumes, and Integrated Striping
volumes. You can create up to two Integrated RAID volumes on each LSI SAS2
controller.

The LSI Integrated RAID solution supports the following LSI SAS2 controllers and the
host bus adapters based on these controllers:



LSISAS2004



LSISAS2008



LSISAS2108



LSISAS2208



LSISAS2304



LSISAS2308

LSI Integrated RAID firmware uses the same device drivers as the standard LSI
Fusion-MPT-based controllers. This eliminates the need for complex backup software or
expensive RAID hardware. To conserve system resources, the Integrated RAID firmware
operates independently from the operating system. The BIOS-based configuration
utility, documented in

Chapter 3

and

Chapter 5

, makes it easy to configure mirrored

and striped volumes. The Integrated RAID solution is currently available as an optional
component of the Fusion-MPT architecture on LSI SAS2 controllers.

Introduction to the Integrated RAID Solution

This chapter provides an introduction to the features and benefits of the LSI Integrated

RAID solution for LSI SAS2 controllers.

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Содержание SAS2 Integrated RAID Solution

Страница 1: ...SAS2 Integrated RAID Solution User Guide Version 2 0 August 2010...

Страница 2: ...tion convey a license under any patent rights copyrights trademark rights or any other of the intellectual property rights of LSI Corporation or of third parties This document contains proprietary inf...

Страница 3: ...ite 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 Chapter 3 Creating Mirrored Volumes 13 3 1 Mirrored Volume Configurati...

Страница 4: ...Drives in a Volume 28 5 3 5 Selecting a Boot Disk 29 Appendix A Using the SAS2 Integrated RAID Configuration Utility 31 A 1 Hardware and Software Requirements 31 A 1 1 Controller Support 31 A 1 2 Ope...

Страница 5: ...mware supports Integrated Mirroring volumes Integrated Mirroring Striping volumes Integrated Mirroring Enhanced volumes and Integrated Striping volumes You can create up to two Integrated RAID volumes...

Страница 6: ...message passing interface as described in the Fusion MPT Message Passing Interface Specification The Fusion MPT interface gives the host OS access to the RAID volumes as well as to additional non RAID...

Страница 7: ...cal data Mirrored volumes also support one or two global hot spare drives with a maximum of 14 drives on each LSI SAS2 controller NOTE Fourteen drives is the theoretical upper limit for a single LSI S...

Страница 8: ...Consistency checking Fusion MPT architecture Menu driven BIOS based configuration utility Error notification in which the drivers update an OS specific event log Support for SCSI Enclosure Services SE...

Страница 9: ...can configure an Integrated Mirroring Enhanced volume with up to 10 mirrored disks The following figure shows the logical view and physical view of an Integrated Mirroring Enhanced volume with three m...

Страница 10: ...ilures 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 Mi...

Страница 11: ...In a mirrored volume with an odd number of disks primary and secondary sets include three disks instead of two 2 4 3 Hot Spare Disk You can configure two disks as global hot spare disks to protect da...

Страница 12: ...each other 2 4 8 Background Initialization Background initialization BGI is the process of copying data from primary to secondary disks in a mirrored volume The Integrated RAID firmware starts BGI aut...

Страница 13: ...part of the Fusion MPT BIOS When the BIOS loads during the startup sequence and you see the message about the LSI Configuration Utility press Ctrl C to start the SAS2 BIOS CU After you do this the mes...

Страница 14: ...d RAID firmware rebuilds it using one of the global hot spares and the data is safe If you create two mirrored volumes on an LSI SAS 2 controller either of the two mirrored volumes can use the global...

Страница 15: ...ternatively follow the instructions in the following section to create an Integrated Mirroring Enhanced or Integrated Mirroring Striping volume NOTE See the instructions in Section 3 3 Managing Hot Sp...

Страница 16: ...NOTE To create a second Integrated Mirroring Enhanced or Integrated Mirroring Striping volume repeat the instructions above NOTE See the instructions in Section 3 3 Managing Hot Spare Disks if you wa...

Страница 17: ...indow appears when the expansion process completes 11 Run a commercial tool specific to the operating system to move or increase the size of the partition on the newly expanded RAID1 volume 3 3 Managi...

Страница 18: ...eat the preceding step to select a second global hot spare disk 9 Press C to create the hot spare disk A menu window appears An error message appears if the selected disk is not at least as large as t...

Страница 19: ...ou view the mirrored volume that uses the same type of disks as the hot spare disks 4 If the currently displayed array is not the one you want press Alt N to view another array on the adapter 3 4 2 Ru...

Страница 20: ...pears If necessary press Alt N to switch to another array on this adapter 4 Select Manage Array The Manage Array window appears 5 Select Activate Array on the Manage Array window A menu window appears...

Страница 21: ...ht SAS Topology and press Enter The SAS Topology window appears 3 Select the disk in the Device Identifier column and press Enter The LED on the disk flashes until you press a key to stop it 4 To iden...

Страница 22: ...eferred boot disk move the cursor to the disk and press Alt B 4 To remove the boot designator move the cursor to the current boot disk and press Alt B This controller no longer has a disk designated a...

Страница 23: ...to configure Integrated Striping volumes These volumes can consist of two to ten disks 4 2 Integrated Striping Features Integrated Striping supports the following features Support for volumes with two...

Страница 24: ...isk list it continues writing data at the next available segment of disk 1 Figure 8 Integrated Striping Example The following figure shows a logical view and a physical view of an Integrated Striping...

Страница 25: ...2 BIOS CU is part of the Fusion MPT BIOS When the BIOS loads during boot and you see the message about the LSI Configuration Utility press Ctrl C to start the CU After you do this the message changes...

Страница 26: ...List window select an LSI SAS adapter and press Enter The Adapter Properties window appears as the following figure shows Figure 10 Adapter Properties Window 2 Select RAID Properties and press Enter...

Страница 27: ...ties The Select New Array Type window appears 3 Select View Existing Array The View Array window appears showing information about the array and each disk in it 4 If the currently displayed array is n...

Страница 28: ...a pause the utility deletes the array 5 3 4 Locating Disk Drives in a Volume You can use the SAS2 BIOS CU to locate and identify a specific physical disk drive in a disk enclosure by flashing the dri...

Страница 29: ...nnot find the preferred boot device when it loads it attempts to boot from the alternate device Follow these steps to select a boot disk 1 In the SAS2 BIOS CU select an adapter from the Adapter List 2...

Страница 30: ...RAID Solution User Guide Page 30 LSI Corporation Confidential August 2010 6 To select an alternate boot disk move the cursor to the disk and press Alt A NOTE To change the alternate boot device from o...

Страница 31: ...se the SAS2IRCU utility Instead they should use the LSI SAS2 BIOS Configuration Utility SAS2 BIOS CU to create and manage Integrated RAID volumes For more information see Chapter 3 and Chapter 5 A 1 H...

Страница 32: ...on Format commands as follows for the SAS2IRCU command line interface sas2ircu controller_ command parameters Use a space to separate the program name the controller number the command and the paramet...

Страница 33: ...lers controller 0 references the first controller and controller 1 references the other controller Valid controller number values are 0 to 255 decimal Enclosure Bay The enclosure and bay slot of a per...

Страница 34: ...sDisks MaxGlobalHotSpares MaxPhysDisks maximum number of physical drives combined in all volumes on the controller For more information refer to the description of the IOC configuration pages in the F...

Страница 35: ...is running Program Return Value 0x00 SUCCESS Command completed successfully 0x01 FAILURE Bad command line arguments or operational failure 0x02 ADAPTER_NOT_FOUND Cannot find specified adapter A 3 4 D...

Страница 36: ...on 1 Serial Attached SCSI Initiator ID 112 Maximum physical devices 62 Concurrent commands supported 266 Slot 3 Segment 0 Bus 64 Device 1 Function 0 RAID Support Yes IR Volume information Physical dev...

Страница 37: ...s not suitable for use in an array or a hot spare pool Failed FLD The drive failed and is now offline Missing MIS The drive has been removed or is not responding Standby SBY The device is not a hard d...

Страница 38: ...SSD hot spare to a volume that has HDDs or vice versa Command Line sas2ircu controller_ hotspare delete Enclosure Bay Parameters controller_ The index of the controller on which you want to create the...

Страница 39: ...d The possible values for the fields in the status data are as follows Current operation Synchronize Consistency Check OCE Background Init or None Volume status Enabled or Disabled Volume state Inacti...

Страница 40: ...rmware to start a consistency check operation on the specified volume Command Line sas2ircu controller_ constchk volumeId noprompt Parameters controller_ The index of the controller on which the consi...

Страница 41: ...and line arguments or operational failure 0x02 ADAPTER_NOT_FOUND Cannot find specified adapter A 3 12 LOGIR Command The LOGIR command uploads or clears the Integrated RAID log information Command Line...

Страница 42: ......

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