USER’S GUIDE MegaRAID® 8480 Storage Adapter July 2007 ® IBM P/N: 42D8846
This document contains copyrighted information of LSI Corporation. LSI products are not intended for use in life-support appliances, devices, or systems. Purchase of I2C components of LSI Corporation, or one of its sublicensed Associated Companies, conveys a license under the Philips I2C Patent Rights to use these components in an I2C system, provided that the system conforms to the I2C standard Specification as defined by Philips. IBM P/N: 42D8846, July 2007.
Preface This book is the primary reference and user’s guide for the LSI MegaRAID® 8480 RAID Storage Adapter. It contains installation instructions and specifications for the adapter. For details on how to configure the storage adapter, refer to the MegaRAID 8480 Software User’s Guide. For information about the operating system drivers, refer to the MegaRAID 8480 Device Driver Installation User’s Guide.
• Appendix A, Glossary of Terms and Abbreviations, lists and explains the terms and abbreviations used in this manual. Related Publications MegaRAID Battery Backup Unit User’s Guide IBM Document Number: 42D8847 This document explains how to install and use the LSI battery backup unit for MegaRAID 8480 Storage Adapter. The 8480 board uses the LSI intelligent Transportable Battery Backup Unit 02 (LSIiTBBU02).
Conventions Throughout the manual, the conventions described in the following table are used to describe user interaction with the product: Notation Example Meaning and Use courier typeface .nwk file Names of commands, files, and directories as well as code and screen messages are shown in courier. bold typeface fd1sp In a command line, keywords are shown in bold, non-italic typeface. Enter them exactly as shown. italics module In command lines and names italics indicate user variables.
IBM Customer Support If you have feedback or questions, you can contact IBM. E-mail: askibm@vnet.ibm.com Phone: (Toll free) 1-800-IBM-4YOU (1-800-426-4968) Web site: https://www.ibm.com/support/us/fbmast.html Safety Instructions Use the following safety guidelines to help protect your computer system from potential damage and to ensure your own personal safety. Note: Use the MegaRAID 8480 Storage Adapter with UL-listed Information Technology Equipment (ITE) products only.
• To help avoid possible damage to the system board, wait 5 seconds after you turn off the system before you remove a component from the system board or disconnect a peripheral device from the computer. • To help prevent electric shock, plug the computer and peripheral power cables into properly grounded power sources. These cables are equipped with 3-prong plugs to ensure proper grounding. • Do not use adapter plugs or remove the grounding prong from a cable.
• When you disconnect a cable, pull on its connector or on its strain-relief loop, not on the cable itself. Some cables have a connector with locking tabs; if you are disconnecting this type of cable, press in on the locking tabs before you disconnect the cable. As you pull connectors apart, keep them evenly aligned to avoid bending any connector pins. Also, before you connect a cable, make sure both connectors are correctly oriented and aligned. • Handle components and cards with care.
Contents Chapter 1 Overview 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 Overview 1-1 MegaRAID 8480 RAID Controller Description 1-3 1.2.1 Controller Limitations 1-3 General Description 1-3 Configuration Scenario 1-4 1.4.1 Number of Physical Disks Supported 1-6 Benefits of the SAS Interface 1-7 1.5.1 PCI Express Architecture 1-8 1.5.2 Operating System Support 1-8 Summary of MegaRAID 8480 RAID Controller Characteristics 1-8 1.6.1 SAS Features 1-9 1.6.2 SATA II Features 1-9 1.6.3 PCI Express Performance 1-10 1.6.
2.5 2.6 Drive Boxes and Drive Expanders 2-8 Replacing a Failed Controller Containing Data in the LSIiTBBU02 2-9 After Installing the Storage Adapter 2-10 Chapter 3 MegaRAID 8480 Storage Adapter Characteristics 3.1 MegaRAID 8480 RAID Controller 3.1.1 MegaRAID 8480 RAID Controller 3.2 MegaRAID 8480 Storage Adapter Characteristics 3.3 Technical Specifications 3.3.1 Storage Adapter Specifications 3.3.2 Array Performance Features 3.3.3 Fault Tolerance 3.3.4 Electrical Characteristics 3.3.
Figures 1.1 1.2 2.1 2.2 2.3 2.4 2.5 3.
xii Contents Copyright © 2006-2007 by LSI Corporation. All rights reserved.
Tables 1.1 1.2 3.1 3.2 3.3 3.4 3.5 3.6 Physical Drives Required for Each RAID Level MegaRAID 8480 Storage Adapter Specifications MegaRAID 8480 RAID Controller – Connectors MegaRAID 8480 Characteristics Storage Adapter Specifications Array Performance Features Fault Tolerance Features Maximum Power Requirements Contents Copyright © 2006-2007 by LSI Corporation. All rights reserved.
xiv Contents Copyright © 2006-2007 by LSI Corporation. All rights reserved.
Chapter 1 Overview This section provides a general overview of the Megaraid 8480 Storage Adapter with RAID control capabilities. It consists of the following sections: 1.1 • Section 1.1, “Overview” • Section 1.2, “MegaRAID 8480 RAID Controller Description” • Section 1.3, “General Description” • Section 1.4, “Configuration Scenario” • Section 1.5, “Benefits of the SAS Interface” • Section 1.6, “Summary of MegaRAID 8480 RAID Controller Characteristics” • Section 1.
two similar technologies on the same controller and within the same enclosure. Note: You cannot mix SAS and SATA drives within the same virtual disk(s). The MegaRAID 8480 Storage Adapter is based on the LSI first-to-market SAS IC technology and proven MegaRAID technology. As the second-generation PCI Express storage adapter, the MegaRAID 8480 controller addresses the growing demand for increased data throughput and scalability requirements across midrange and enterprise-class server platforms.
1.2 MegaRAID 8480 RAID Controller Description The MegaRAID 8480 Storage Adapter is available with eight PHYs. The MegaRAID 8480 has one Intel IOP333 I/O processor that controls eight external SAS/SATA ports through two SAS 4x external connectors. 1.2.1 Controller Limitations The MegaRAID 8480 Storage Adapter has the following limitations: 1.
The RAID controller supports the SAS protocol as described in the Serial Attached SCSI Standard, version 1.1. The controller also supports the Serial ATA II (SATA II) protocol defined by the Serial ATA specification, version 1.0a. SATA II is an extension to SATA 1.0a.
Figure 1.1 Example of LSI SAS Direct-Connect Application SAS/SATA II Device SAS/SATA II Device SAS PCI Express RAID Controller SAS/SATA II Device 32-Bit Memory Address/Data Bus I2C Interface Flash ROM/ PSBRAM/ NVSRAM I2C SAS/SATA II Device PCI Express Interface Configuration Scenario Copyright © 2006-2007 by LSI Corporation. All rights reserved.
Figure 1.2 shows an example of a RAID controller configured with an LSISASx12 expander that is connected to SAS devices. Figure 1.2 Example of RAID Controller Configured with LSISASx12 Expander PCI Express Interface 32-bit Memory Address/Data Bus SAS RAID Controller I2C Interface LSISASx12 I2C LSISASx12 SAS Drives SAS Drives SAS Drives 1.4.
Table 1.1 1.5 Physical Drives Required for Each RAID Level (Cont.) RAID Level Minimum # of Physical Drives Maximum # of Physical Drives 1 2 2 5 3 32 10 4 16 50 6 32 Benefits of the SAS Interface SAS is a serial, point-to-point, enterprise-level device interface that leverages the proven SCSI protocol set. SAS is a convergence of the advantages of SATA II, SCSI, and fibre channel, and is the future mainstay of the enterprise and high-end workstation storage markets.
1.5.1 PCI Express Architecture PCI Express is a local bus system designed to increase data transfers without slowing down the central processing unit (CPU). You can install MegaRAID PCI Express storage adapters in PCI Express computer systems with a standard bracket type. With these adapters in your system, you can connect SCSI and SATA II devices over the bus.
1.6.1 • Two external connectors • Support for RAID levels 0, 1, 5, 10, and 50 • Advanced array configuration and management utilities • Online RAID level migration • Drive migration • Drive roaming • Patrol Read • No reboot necessary after expansion • More than 200 Qtags per array • User-specified rebuild rate • 32 Kbyte nonvolatile random access memory (NVRAM) for storing RAID system configuration information; the MegaRAID SAS firmware is stored in flash ROM for easy upgrade.
1.6.3 • Supports SATA II data transfers of 3.0 Gbits/s • Supports STP data transfers of 3.
• 1.6.5 Supports the internal SAS Sideband signal SFF-8485 (SGPIO) interface Flexibility Features These features increase the flexibility of the MegaRAID 8480 RAID controller: 1.6.
Step 4. Determine the SAS target requirements. Step 5. Perform a safety check. a. Make sure the drives are inserted properly. Step 6. b. Close the cabinet of the host system. c. Turn power on after completing the safety check. Power-on the system. The controller then detects the RAID configuration from the configuration data on the drives. 1.6.7 Drive Migration Drive migration is the transfer of a set of hard drives in an existing configuration from one controller to another.
Step 3. Open the host systems by following the instructions in the host system technical documentation. Step 4. Remove the SAS cable connectors from the internal drives or the shielded cables from the external drives you want to migrate. a. Make sure pin 1 on the cable matches pin 1 on the connector. b. Make sure that the SAS cables conform to all SAS specifications. Step 5. Remove the hard drives from the first system and insert them into drive bays on the second system. Step 6.
Table 1.2 MegaRAID 8480 Storage Adapter Specifications Specification Megaraid 8480 Storage Adapter RAID Levels Devices Supported per Port Ports Data Transfer Rate Bus Cache Function 0, 1, 5, 10, and 50 Up to 15 SAS or SATA II devices (such as hard drives and expanders) Eight external Up to 3 Gbits/s per phy PCI Express 1.
Chapter 2 MegaRAID 8480 Hardware Installation This chapter describes the procedures used to install the MegaRAID 8480 Storage Adapter. It consists of the following sections: 2.1 • Section 2.1, “Requirements” • Section 2.2, “Quick Installation” • Section 2.3, “Detailed Installation” • Section 2.4, “SAS Device Cables” • Section 2.5, “Replacing a Failed Controller Containing Data in the LSIiTBBU02” • Section 2.
2.2 Quick Installation The following steps are for quick MegaRAID 8480 Storage Adapter installation. These steps are for experienced computer users/installers. Section 2.3, “Detailed Installation,” contains the steps for all others to follow. Step 1. Review all safety information provided with the server; then, turn off the server and all attached devices and unplug the server and device power cords. Step 2.
Step 2. – A CD containing MegaRAID drivers for supported operating systems, an electronic version of this User’s Guide, and other related documentation – A license agreement – Warranty information Turn off the Power to the System Review all safety information provided with the computer; then, turn off the computer, unplug the power cords from the power supplies, disconnect the computer from the network, and remove the computer cover. See the documentation provided with the computer for instructions.
Figure 2.1 Bracket Screw Example of MegaRAID Board Installation in a PCI Express Slot Press Here Press Here PCI Express Slot Step 7. Configure and Install the SAS and/or the SATA II Devices in the Host Computer Case Refer to the documentation for the devices for any preinstallation configuration requirements. Step 8. Connect SAS and/or SATA II Devices to the Storage Adapter Use SAS cables to connect SAS and/or SATA II devices to the MegaRAID 8480 Storage Adapter. Refer to Section 2.
The maximum cable length is six external meters. You can connect one device per SAS PHY unless you use an expander. System throughput problems can occur if the SAS cables are not the correct type. To minimize the potential for problems: a. Use cables no longer than six meters (LSI recommends using shorter cables, if possible) Step 9. b. Use cables that meet the SAS specification c.
CD. Be sure to use the latest Service Packs provided by the operating system manufacturer and to review the readme file that accompanies the driver. 2.4 SAS Device Cables This section describes the cables used on the RAID controller and provides step-by-step instructions for connecting SAS and/or SATA II physical disks to the controller. The SAS and SATA II protocols use a thin, 7-wire connector instead of the 68-wire SCSI cable or 26-wire ATA cable.
on a backplane. A SATA II connector consists of a signal connector and a power connector. Figure 2.3 SATA II Connectors Device Plug Connector Serial ATA Signal Connector (pin 1) Serial ATA Power Connector (pin 1) Host Receptacle Connector Figure 2.4 shows SAS and SATA II connectors on SAS and SATA II physical disks, respectively. Cables are used for connection between internal connectors on the RAID controller and connectors on SAS and/or SATA II drives, respectively.
Figure 2.4 SAS and SATA II Plugs and SAS Backplane Receptacle Connector SAS Primary Physical Link Serial Attached SCSI Power SAS Backplane Receptacle Connector SAS Primary Physical Link Power Serial ATA Power SATA II Physical Link SAS Secondary Physical Link SATA II/SAS Primary Physical Link Note: SATA II backplane connectors do not accept SAS drives.
Figure 2.5 Connecting the MegaRAID 8480 RAID Controller with External Connectors to a Drive Box or Drive Enclosure To Drive Box or Expander Board 4-Lane External PCB Receptacle and Plug and Cable with Jackscrews SFF-8470 2.5 Replacing a Failed Controller Containing Data in the LSIiTBBU02 The MegaRAID intelligible Transportable Battery Backup Module 2 (LSIiTBBU02) is a cache memory module with an integrated battery pack.
Follow these steps to replace a failed controller with data in the transportable battery backup unit. Step 1. Review all safety information provided with the server; then, power down the server and the drives. Step 2. Remove the failed controller from the system. Step 3. Remove the LSIiTBBU02 from the failed controller. Step 4. Insert the LSIiTBBU02 into the replacement controller. Step 5. Insert the replacement controller into the system. Step 6. Power-on the system.
Chapter 3 MegaRAID 8480 Storage Adapter Characteristics This chapter describes the characteristics of the LSI MegaRAID Serial Attached SCSI/Serial ATA II 8480 RAID Storage Adapter. It consists of the following sections: 3.1 • Section 3.1, “MegaRAID 8480 RAID Controller” • Section 3.2, “MegaRAID 8480 Storage Adapter Characteristics” • Section 3.
3.1.1 MegaRAID 8480 RAID Controller The MegaRAID 8480 PCI Express Disk Array RAID Controller has one Intel IOP333 I/O processor, which controls eight internal SAS/SATA ports through two SAS 4x internal connectors. This subsection provides the board layout and connector information for the MegaRAID 8480 RAID controller, which has eight external SAS/SATA connectors. Figure 3.1 displays the connectors on the controller, while Table 3.1 describes them. Figure 3.
Table 3.1 MegaRAID 8480 RAID Controller – Connectors Connector Description Type Comments J2 DIMM Socket Socket Holds cache memory module. J3 Ports 0–3 x4 SAS ports SAS 4x connector that connects to physical drives and expanders. J5 Write Pending Indication LED 2-pin Connector for enclosure LED. connector When lit, it indicates the on-board cache contains data and a write from the cache to the hard drives is pending. Optional. J6 Firmware 2-pin Reserved for LSI internal use.
3.2 MegaRAID 8480 Storage Adapter Characteristics Table 3.2 shows the general characteristics for the MegaRAID 8480 RAID controller. Table 3.2 MegaRAID 8480 Characteristics Flash ROM1 Serial EEPROM2 SAS Data Transfers SCSI Features Yes Yes Up to 3 Gbits/s per port Plug and Play Scatter/Gather Activity LED 1. 2. SCSI Termination Active For boot code and firmware. For BIOS configuration storage.
The MegaRAID 8480 RAID controller and the LSIiTBBU02 are CSA C22.2 No. 60950-1, UL 60950-1 First Edition listed Accessory, UL file number E257743. 3.3.1 Storage Adapter Specifications Table 3.3 lists the specifications for the MegaRAID 8480 RAID controller. Table 3.3 Storage Adapter Specifications Specification MegaRAID 8480 RAID Controller Processor (PCI Express Host Controller to PCI Secondary I/O Controller) Intel IOP333 I/O processor @ 500 MHz Operating Voltage +3.
3.3.2 Array Performance Features Table 3.4 shows the MegaRAID 8480 Storage Adapter array performance features. Table 3.4 3.3.3 Array Performance Features Specification MegaRAID 8480 RAID Controller PCI Express Host Data Transfer Rate 2.5 Gbits/s per lane Drive Data Transfer Rate 3.0 Gbits/s per lane Maximum Scatter/Gathers 26 elements Maximum Size of I/O Requests 6.
3.3.4 Electrical Characteristics This subsection provides the power requirements for the MegaRAID 8480 RAID controller. Table 3.6 lists the maximum power requirements. Table 3.6 Maximum Power Requirements PCI Express +12 V PCI Express +3.3 V 12 W; used only if battery is present 9W RAID Controller MegaRAID 8480 3.3.
3-8 MegaRAID 8480 Storage Adapter Characteristics Copyright © 2006-2007 by LSI Corporation. All rights reserved.
Appendix A Glossary of Terms and Abbreviations active termination The electrical connection required at each end of the SCSI bus, composed of active voltage regulation and a set of termination resistors. array An array of disk drives combines the storage space on the disk drives into a single segment of storage space. A hot spare drive does not actively participate in an array. BIOS Acronym for Basic Input/Output System. Software that provides basic read/write capability.
architectures. Fusion-MPT architecture offers a single binary, operating system driver that supports both Fibre Channel and SCSI devices. host The computer system in which a storage adapter is installed. It uses the storage adapter to transfer information to and from devices attached to the SCSI bus. host adapter board A circuit board or integrated circuit that provides a device connection to the computer system.
peripheral devices A piece of hardware (such as a video monitor, disk drive, printer, or CD-ROM) used with a computer and under the control of the computer. SCSI peripherals are controlled through a MegaRAID 8480 Storage Adapter (host adapter). PHY The interface required to transmit and receive data packets transferred across the serial bus. Each PHY can form one side of the physical link in a connection with a PHY on a different SATA device.
SAS device Any device that conforms to the SAS standard and is attached to the SAS bus by a SAS cable. This includes SAS storage adapters (host adapters) and SAS peripherals. SATA Acronym for Serial Advanced Technology Attachment. A physical storage interface standard, SATA is a serial link that provides point-to-point connections between devices. The thinner serial cables allow for better airflow within the system and permit smaller chassis designs. SMP Acronym for Serial Management Protocol.