Dell™ PowerEdge™ Expandable RAID Controller 4/IM Integrated RAID User’s Guide Model PERC 4/IM www.dell .com | support.dell.
____________________ Information in this document is subject to change without notice. © 2004 Dell Inc. All rights reserved. Reproduction in any manner whatsoever without the written permission of Dell Inc. is strictly forbidden. Trademarks used in this text: Dell, the DELL logo and PowerEdge are trademarks of Dell Inc. Microsoft, Windows NT, MS-DOS, and Windows are registered trademarks of Microsoft Corporation.
Preface This user’s guide explains how to configure and use the components of the Dell PERC 4/IM (Integrated Mirroring™) RAID Controller on the Dell PowerEdge 1855. Audience This user’s guide assumes that you have some familiarity with installing and configuring software programs and that you are familiar with computer storage devices in general. The people who benefit from this document are end users who are using the IM software product to configure mirrored volumes.
Contents 1 Introduction to Integrated RAID Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Integrated RAID Benefits and Features Using this Manual 7 . . . . . . . . . . . . . . . . . . . 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2 Integrated Mirroring Overview Introduction . Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Description . . . . . . . . .
...Switch from IM to SCSI Mode . . . . ...Switch from SCSI to IM Mode . . . . ...Clone the OS Using the IM Controller . ...Upgrade to a Larger Volume . . . . . Troubleshooting 6 Contents . . . . . . . . . . . . . . . . 24 25 25 25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 Introduction to Integrated RAID This chapter provides an overview of Integrated RAID, its features, and its benefits. The chapter includes these sections: • "Introduction" on page 7 • "Integrated RAID Benefits and Features" on page 7 • "Using this Manual" on page 7 Introduction The Dell, Inc. Integrated RAID solution provides cost benefits for the server market where the extra performance, storage capacity, and/or redundancy of a RAID configuration are required.
w w w. d el l. c om | s upp ort . del l . com • 8 Refer to the platform User’s Guide on http://support.dell.com for platform-specific information.
2 Integrated Mirroring Overview This chapter provides an overview of the IM feature and includes these sections: • "Introduction" on page 9 • "Features" on page 9 • "Description" on page 10 • "Integrated Mirroring Firmware" on page 11 Introduction The IM feature provides simultaneous mirroring on a configuration of two disks, to assure fault tolerant, high availability data. If a disk fails, the hot swap capability allows the system to be easily restored by simply hot swapping disks.
w w w. d el l. c om | s upp ort . del l . com • Provides automatic background resynchronization while host I/Os continue • Supports media verification Description The IM feature provides mirroring for the boot volume, as shown in Figure 2-1. This is accomplished through the firmware of a PERC 4/IM controller that supports the standard FusionMPT interface. The runtime mirroring of the boot disk is transparent to the BIOS, drivers, and operating system.
Figure 2-2. Integrated Mirroring with Two Disks (Mirroring Configuration) Physical View LBA 1 LBA 2 + LBA 3 LBA N Logical View LBA 1’ LBA 1 LBA 2’ LBA 2 LBA 3’ LBA 3 LBA N’ LBA N Fig 2-3 shows the logical view and physical view of SCSI configuration when there are two disks in the system. Figure 2-3.
w w w. d el l. c om | s upp ort . del l . com Resynchronization with Concurrent Host I/O Operation Resynchronization is attempted after the firmware has been reset, or after a “hot swap” has occurred to one of the physical IM disks. The IM volume can be partially resynchronized, if the logging information in NVSRAM indicates that this is necessary. It usually takes less than a second for the firmware to complete a partial resynchronization.
SCSI ID Assignment A single logical drive is presented as the combination of a set of physical member disks. Each individual member disk is hidden and returns a “selection timeout” when accessed. The SCSI Target ID of the IM logical drive is assigned when the logical drive is created. The lowest SCSI ID of the selected disks is used. Disk Write Caching Disk Write Caching is not supported and not configurable. NVSRAM Usage IM firmware utilitizes a 32 Kbyte NVSRAM in order to perform write journaling.
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3 Setting Up Integrated Mirroring This chapter describes how to set up IM using the BIOS-based configuration utility (CU). The chapter includes these topics: • "IM Configuration Overview" on page 15 • "Configuring IM with the BIOS-Based CU" on page 15 • "How to..." on page 24 • "Troubleshooting" on page 25 IM Configuration Overview The following constraints were made in order to simplify the IM configuration: • The BIOS-based CU allows you to create one mirrored volume per PERC 4/IM controller.
w w w. d el l. c om | s upp ort . del l . com Figure 3-1. Screen Field Definitions Header Area Menu Area Main Area Footer Area • Header Area: Shows the product title and version. • Menu Area: Shows the currently defined menu, if any. Press F2 to move to the menu area. Select a menu item by moving the cursor to it with the right and left arrow keys and then pressing Enter. • Main Area: Shows information about the PERC 4/IM controllers and attached devices.
a In the Mirroring Properties screen, select the primary disk for the IM volume (the disk with the data you want to mirror). Use the arrow keys to move to the Mirrored Pair column for this disk, and use the + and - keys to select Primary as the value. b Use the arrow keys to select the secondary (mirrored) disk for the IM volume. Use the + and - keys to select Secondary as the value for the Mirrored Pair column. c Press Esc, then use the arrow keys to select Save changes then exit this menu.
w w w. d el l. c om | s upp ort . del l . com Figure 3-2. Main Menu PERC 4/IM| LSI Logic MPT SCSI Setup Utility Version MPTBIOS-IM-5.08.
Figure 3-3. Adapter Properties Screen PERC 4/IM | LSI Logic MPT SCSI Setup Utility Version MPTBIOS-IM-5.08.06 Adapter Properties Adapter PCI Bus Dev/ Func 1020/1030 0 A0 Host SCSI ID SCSI Bus Scan Order Removable Media Support CHS Mapping Spinup Delay (Secs) Secondary Cluster Server Termination Control Esc=Abort/Exit [7] [Low to High (0..
w w w. d el l. c om | s upp ort . del l . com Figure 3-4. Mirroring Properties Screen: No IM Volume Configured PERC 4/IM | LSI Logic MPT SCSI Setup Utility Version MPTBIOS-IM-5.08.
The IM volume exists as soon as you save the changes, and the Mirroring Properties screen displays the IM volume properties and status. Other Mirroring Properties Screen Information After the IM volume is created, the Volume SCSI ID field shows which SCSI ID the operating system uses to access the IM volume (figure 3-5). This addressing information stays the same unless you reconfigure the volume with disks that have different SCSI IDs.
w w w. d el l. c om | s upp ort . del l . com Boot Adapter List Screen The Boot Adapter List screen is invoked by selecting Boot Adapter List from the Main Menu screen shown in Figure 3-2, or by pressing F2 to move to the menu area. Only devices connected to one of the SCSI boot adapters can be used to boot. Figure 3-7 shows the Boot Adapter List screen. Figure 3-6. Boot Adapter List Screen PERC 4/IM | LSI Logic MPT SCSI Setup Utility Version MPTBIOS-IM-5.08.
Figure 3-7. Global Properties Screen PERC 4/IM | LSI Logic MPT SCSI Setup Utility Version MPTBIOS-IM-5.08.06 Global Properties Boot Information Display Mode [Terse] Video Mode [Color] Esc=Abort/Exit Arrow Keys=Select Item -/+ = Change [Item] Home/End=Select Item Enter=Execute - Press the key to exit this screen.
w w w. d el l. c om | s upp ort . del l . com Figure 3-8. Device Properties Screen PERC 4/IM | LSI Logic MPT SCSI Setup Utility Version MPTBIOS-IM-5.08.
4 If you press Enter in Step 3, the next screen provides an opportunity (by pressing F3) to confirm that data loss is OK. Or, press any other key to discard the changes. 5 After pressing F3, you are returned to the Main menu. To verify the change in mirroring properties, use the arrow keys to select an adapter. Then press Enter to return to the Adapter Properties screen. 6 Use the arrow keys to select Mirroring Properties, and press Enter.
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Index C Q Configuration Screen overview, 15 Quick IM Configuration Procedure, 16 D R Detailed IM Configuration Procedure, 17 Resynchronization with Concurrent Host I/O Operation, 12 Disk Write Caching, 13 H Hot Swap, 12 I Integrate RAID Benefits and Features, 7 Integrated Mirroring with Two Disks, 11 Introduction, 7 M Main Menu, 18 S Setting Up Integrated Mirroring, 15 Support for Media Verification, 12 T Typical Mainboard Implementation, 10 U Using this Manual, 7 P PERC features, 9 Index 2
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