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Integrated RAID for SAS User’s Guide

2-1

Version 1.1

Copyright © 2006, 2007 by LSI Logic Corporation. All rights reserved.

Chapter 2
Overview of Integrated Mirroring
and Integrated Mirroring
Enhanced

This chapter provides an overview of the LSI Integrated Mirroring (IM)
and Integrated Mirroring Enhanced (IME) features. It includes these
sections:

Section 2.1, “Introduction,” page 2-1

Section 2.2, “IM and IME Features,” page 2-2

Section 2.3, “IM/IME Description,” page 2-3

Section 2.4, “Integrated RAID Firmware,” page 2-5

Section 2.5, “Fusion-MPT Support,” page 2-7

2.1

Introduction

As a result of the shift towards Network Attached Storage (NAS), ISPs
need a cost effective, fault-tolerant solution to protect the operating
systems on small form factor, high-density, rack-mountable servers. The
LSI Integrated Mirroring (IM) and Integrated Mirroring Enhanced (IME)
features provide data protection for the system boot volume to safeguard
critical information such as the operating system on servers and high
performance workstations. The IM and IME features provide a robust,
high-performance, fault-tolerant solution to data storage needs, at a
lower cost than a dedicated RAID controller.

The IM and IME features support one or two mirrored volumes per LSI
SAS controller, to provide fault-tolerant protection for critical data. The
two volumes can have up to twelve disk drives total, plus one or two hot
spare disks.

If a disk in an Integrated Mirroring volume fails, the hot swap capability
allows you to restore the volume by simply swapping disks. The firmware
then automatically re-mirrors the swapped disk. Additionally, each SAS

Summary of Contents for Integrated RAID for SAS

Page 1: ...DB15 000357 01 Integrated RAID for SAS USER S GUIDE A p r i l 2 0 0 7 Version 1 1...

Page 2: ...rves the right to make changes to any products herein at any time without notice All features functions and operations described herein may not be marketed by LSI Logic in all parts of the world In so...

Page 3: ...o design Fusion MPT Integrated Mirroring and Integrated Striping are trademarks or registered trademarks of LSI Logic Corporation Windows and Windows NT are registered trademarks of Microsoft Corporat...

Page 4: ...iv Version 1 1 Copyright 2006 2007 by LSI Logic Corporation All rights reserved...

Page 5: ...ing the LSI IR software components or who are using the IR software product in their computer systems End users who are using the IR software product to configure mirrored or striped volumes on LSI SA...

Page 6: ...phrase is defined in this manual it is italicized Hexadecimal numbers are indicated by the prefix 0x for example 0x32CF Binary numbers are indicated by the prefix 0b for example 0b0011 0010 1100 1111...

Page 7: ...2 IM and IME Features 2 2 2 3 IM IME Description 2 3 2 4 Integrated RAID Firmware 2 5 2 4 1 Resynchronization with Concurrent Host I O Operation 2 5 2 4 2 Metadata Support 2 5 2 4 3 Hot Swapping 2 6...

Page 8: ...Chapter 4 Overview of Integrated Striping 4 1 Introduction 4 1 4 2 IS Features 4 2 4 3 IS Description 4 2 4 4 Integrated Striping Firmware 4 4 4 4 1 Metadata Support 4 4 4 4 2 SMART Support 4 4 4 4 3...

Page 9: ...1 Common Command Line Parameters A 4 A 3 2 CREATE Command A 5 A 3 3 DEFAULTS Command A 6 A 3 4 DISPLAY Command A 7 A 3 5 FORMAT Command A 10 A 3 6 HOTSPARE Command A 11 A 3 7 STATUS Command A 12 A 3...

Page 10: ...x Contents Version 1 1 Copyright 2006 2007 by LSI Logic Corporation All rights reserved...

Page 11: ...2 4 2 2 Integrated Mirroring Volume 2 4 2 3 Integrated Mirroring Enhanced with Three Disks 2 5 3 1 Adapter Properties Screen 3 3 3 2 Create New Array Screen 3 4 3 3 Manage Array Screen 3 7 4 1 Integra...

Page 12: ...xii Contents Version 1 1 Copyright 2006 2007 by LSI Logic Corporation All rights reserved...

Page 13: ...3 You can use the LSI Integrated RAID solution with the following LSI SAS controllers LSISAS1064 1064E LSISAS1068 1068E LSISAS1078 1 1 Introduction The LSI Integrated RAID solution provides cost bene...

Page 14: ...r SAS controller Each controller can support up to 12 volume disks plus one or two hot spare disks for a maximum of 14 disks per controller Support for this number of disks requires Integrated RAID fi...

Page 15: ...User s Guide list IM IME features and explain how to create IM IME volumes and optional hot spare disks Chapters 4 and 5 list Integrated Striping features and explain how to create Integrated Stripin...

Page 16: ...1 4 Introduction to Integrated RAID Version 1 1 Copyright 2006 2007 by LSI Logic Corporation All rights reserved...

Page 17: ...ystems on small form factor high density rack mountable servers The LSI Integrated Mirroring IM and Integrated Mirroring Enhanced IME features provide data protection for the system boot volume to saf...

Page 18: ...configuration utility makes it easy to configure IM and IME volumes 2 2 IM and IME Features IM and IME support the following features Configurations of one or two IM or IME volumes on the same LSI SA...

Page 19: ...erification ensures that data on IM IME volumes is always accessible 2 3 IM IME Description The LSI Integrated RAID solution supports one or two IM IME volumes on each LSI SAS controller or one IM IME...

Page 20: ...ogical view and physical view of an IM volume Figure 2 2 Integrated Mirroring Volume An IME volume can be configured with up to ten mirrored disks One or two global hot spares can be added also Figure...

Page 21: ...zation is attempted after a hot spare is activated due to a physical device failure or after a hot swap has occurred to a physical disk in the volume 2 4 2 Metadata Support The firmware supports metad...

Page 22: ...the other mirrored disk as the primary disk The firmware resynchronizes all data from the primary disk onto the new secondary disk 2 4 4 SMART Support SMART is a technology that monitors hard disk dri...

Page 23: ...efault for IM IME volumes This is done to increase data integrity so that the disk write log stored in NVSRAM is always valid If disk write caching were enabled not recommended the disk write log coul...

Page 24: ...2 8 Overview of Integrated Mirroring and Integrated Mirroring Enhanced Version 1 1 Copyright 2006 2007 by LSI Logic Corporation All rights reserved...

Page 25: ...Other Configuration Tasks page 3 8 3 1 IM IME Configuration Overview You can use the SAS BIOS CU to create one or two IM IME volumes on each LSI SAS controller with one or two optional global hot spar...

Page 26: ...also configure one IM IME and one Integrated Striping IS volume on the same controller up to a maximum of twelve physical disk drives for the two volumes In addition you can create one or two hot spar...

Page 27: ...pe select Create IM Volume The Create New Array screen shows a list of disks available to be added to a volume 5 Move the cursor to the RAID Disk column and select a disk To add the disk to the volume...

Page 28: ...by moving the cursor to the hot spare column and pressing the key key or space bar Figure 3 2 shows an IM volume configured with one global hot spare disk Figure 3 2 Create New Array Screen 8 When the...

Page 29: ...the disk to the volume change the No to Yes by pressing the key key or space bar 6 Repeat this step to select a total of three to ten disks for the volume All existing data on all the disks you select...

Page 30: ...to select an LSI SAS adapter 2 Press Enter to go to the Adapter Properties screen shown in Figure 3 1 3 On the Adapter Properties screen use the arrow keys to select RAID Properties and press Enter 4...

Page 31: ...ot spare disk must also be a SATA disk If SAS disks are used the hot spare disk must also be a SAS disk An error message appears if the selected disk is not the same type as the disks used in the IM I...

Page 32: ...ties of the current volume are displayed If global hot spares are defined they are also listed Note If you create one volume using SAS disks another volume using SATA disks and global hot spare disks...

Page 33: ...After a pause the array will become active Note If there is a global hot spare disk on the controller to which you have moved the array the BIOS checks when you activate the array to determine if the...

Page 34: ...g the volume You can locate individual disk drives from the SAS Topology screen To do this move the cursor to the name of the disk in the Device Identifier column and press Enter The LED on the disk f...

Page 35: ...the boot device the Device Info column on the SAS Topology screen will show the word Boot 3 To select a boot disk move the cursor to the disk and press Alt B 4 To remove the boot designator move the c...

Page 36: ...3 12 Creating IM and IME Volumes Version 1 1 Copyright 2006 2007 by LSI Logic Corporation All rights reserved...

Page 37: ...plications that require the faster performance and increased storage capacity of striping The low cost IS feature has many of the advantages of a more expensive RAID striping solution A single IS logi...

Page 38: ...one volume Fusion MPT architecture Easy to use SAS BIOS configuration utility Error notification Use of metadata to store volume configuration on disks OS specific event log Error display inside the...

Page 39: ...S is speed because it transfers data to or from multiple disks at once However there is no data redundancy therefore if one disk fails that data is lost LSI Disk 1 Disk 3 Disk 4 Disk 2 Segment 1 Segme...

Page 40: ...tes an alert if such signs are detected The firmware polls each physical disk in the volume at regular intervals If the firmware detects a SMART ASC ASCQ code on a physical disk in the IS volume it pr...

Page 41: ...two IS volumes with up to twelve drives total on an LSI SAS controller Each volume can have from two to ten drives Disks in an IS volume must be connected to the same LSI SAS controller and the contr...

Page 42: ...some systems however the following message appears next LSI Logic Configuration Utility will load following initialization In this case the SAS BIOS CU will load after the system has completed its po...

Page 43: ...ield changes to reflect the size of the new volume There are several limitations when creating an IS RAID 0 volume All disks must be either SATA with extended command set support or SAS with SMART sup...

Page 44: ...are available disk drives there are two ways to add a second volume The first is as follows 1 In the configuration utility select an adapter from the Adapter List Select the RAID Properties option Thi...

Page 45: ...configuration and maintenance tasks for IS volumes 5 4 1 Viewing IS Volume Properties Follow these steps to view the properties of IS volumes 1 In the configuration utility select an adapter from the...

Page 46: ...The master boot records of all disks are deleted 5 4 4 Locating a Disk Drive or Multiple Disk Drives in a Volume You can use the SAS BIOS CU to locate and identify a specific physical disk drive by f...

Page 47: ...sk 1 In the SAS BIOS CU select an adapter from the Adapter List 2 Select the SAS Topology option The current topology is displayed If the selection of a boot device is supported the bottom of the scre...

Page 48: ...5 8 Creating Integrated Striping Volumes Version 1 1 Copyright 2006 2007 by LSI Logic Corporation All rights reserved...

Page 49: ...ns in the DOS Linux EFI and Windows Pre Installation WinPE environments CFGGEN is a minimally interactive program that can be executed from a command line prompt or a shell script The Appendix include...

Page 50: ...chip s interface registers Note You cannot run CFGGEN in a virtual DOS window from within Windows EFI CFGGEN runs in any environment that is fully EFI compatible Linux CFGGEN is a statically linked Li...

Page 51: ...ion is passed between the user environment and CFGGEN via the command line the standard output and standard error interfaces and the program return value The user can redirect the output streams The r...

Page 52: ...on describes CFGGEN command line parameters that are common to more than one command controller The unique controller number of a PCI function found in the system starting with controller 0 For exampl...

Page 53: ...the newly created volume The following rules must be observed when creating IM IME and IS volumes and hot spare disks 1 All disks that are part of a volume including global hot spares must be on the...

Page 54: ...These values can be obtained from the output of the DISPLAY command qsync If this optional parameter is specified a quick synchronization of new volume will be performed If the volume type is IME or I...

Page 55: ...ational failure A 3 4 DISPLAY Command The DISPLAY command displays configuration information for the supported SAS controllers The information includes controller type firmware version BIOS version vo...

Page 56: ...er information Controller type LSI1064 1068 BIOS version 6 05 05 00 Firmware version 0 07 01 00 SCSI channel description 1 Serial Attached SCSI Initiator IDs SCSI ID 63 Maximum physical devices 62 Con...

Page 57: ...isk SCSI ID 9 State Ready RDY Size in MB in sectors 34732 71132959 Manufacturer MAXTOR Model Number ATLAS15K2_036SAS Firmware Revision BG31 Serial No E204ERCK Drive Type SAS Target on SCSI ID 10 Enclo...

Page 58: ...Drive may or may not be ready and it is not suitable for use in an array or as a hot spare Possible reasons for this are it is not spun up its block size is incorrect or its media is removable Failed...

Page 59: ...e formatted enclosure bay The enclosure bay value for the disk drive to be formatted These values can be obtained from the output of the DISPLAY command noprompt Suppresses display of warnings and pro...

Page 60: ...enclosure bay The enclosure bay value for the disk drive to use for the new hot spare disk These values can be obtained via the output of the DISPLAY command Program Return Value 0x00 SUCCESS command...

Page 61: ...2 93 Here is an example of the status information returned when no background volume operation is in progress Background command progress status for controller 0 IR Volume 1 Current operation None Vo...

Page 62: ...geted by this command SCSI ID SCSI target ID of the drive targeted by this command Program Return Value 0x00 SUCCESS command completed successfully 0x01 FAILURE command failed A 3 9 SETONLINE Command...

Page 63: ...IME or IS volume its entire storage capacity may or may not be used depending on drive capacity and volume capacity For example if you add a 36 GB disk drive to a volume that only uses 9 GB of capacit...

Page 64: ...to be created Valid values are IM IME and IS size Size of the RAID volume in megabytes or MAX for the maximum size available qsync If this optional parameter is specified a quick synchronization of ne...

Page 65: ...0x01 FAILURE bad command line arguments or operational failure A 3 12 ENABLEIR Command EFI Version Only The ENABLEIR command which is currently supported only in the EFI version of CFGGEN enables Int...

Page 66: ...arguments or operational failure A 3 13 LIST Command EFI Version Only The LIST command which is currently supported only in the EFI version of CFGGEN displays a list of all controllers present in the...

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