AcceleRAID 170LP Installation Guide DB11-000024-00 First Edition 08P5513
Electromagnetic Compatibility Notices This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: 1. This device may not cause harmful interference, and 2. This device must accept any interference received, including interference that may cause undesired operation. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules.
Interference-Causing Equipment Regulations. Cet appareil numérique de la classe B respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada. This is a Class B product based on the standard of the Voluntary Control Council for Interference from Information Technology Equipment (VCCI). If this is used near a radio or television receiver in a domestic environment, it may cause radio interference. Install and use the equipment according to the instruction manual.
Declaration of Conformity Per FCC Part 2, Section 2.1077(a) Manufacturer’s Name: LSI Logic Corporation Manufacturer’s Address: North American Headquarters Milpitas, CA USA Declares that the product: Product Name: AcceleRAID 170LP PCI to Ultra 160 SCSI RAID Controller Model Number(s): A170LP-1-16NB Year of Manufacture: 2000 Conforms to the following Product Specification(s): FCC: CFR 47 Part 15, Subpart B, Section 15.107(e) and Section 15.109(g) Class B Digital Device tested per ANSI C63.
Declaration of Conformity Per 89\336\EEC Responsible Party Name: LSI Logic Corporation Address: North American Headquarters Milpitas, CA U.S.A.
Community of Europe CE mark is rated for the AceleRAID 170LP as follows: CISPR 22 Radiated Emission EN55022, Generic immunity standard for the following: IEC 801-2 ESD, IEC 801-3 Radiated, and IEC 801-4 EFT/Burst Warning! This is a Class B product. In a residential environment this product may cause radio interference, in which case the user may be required to take adequate measures. Achtung! Dieses ist ein Gerät der Funkstörgrenzwertklasse B.
Underwriters Laboratories Statement and Warning
Proprietary Rights Notice This document contains proprietary information of LSI Logic Corporation. The information contained herein is not to be used by or disclosed to third parties without the express written permission of an officer of LSI Logic Corporation. Any product(s) described herein is/are a licensed product of LSI Logic Corporation. Document Description Document DB11-000024-00 First Edition.
Trademark Acknowledgments LSI Logic, the LSI Logic logo, MORE, Mylex, and SANmapping are trademarks or registered trademarks of LSI Logic Corporation. All other brand and product names may be trademarks of their respective companies.
About This Manual This installation guide covers hardware set-up and configuration procedures necessary for the installation of a Mylex AcceleRAID 170LP single channel RAID controller. Chapter 1 describes the controller, standard package contents, and usersupplied items necessary for installation. Chapter 2 describes the steps to be performed prior to controller installation and the physical installation of the AcceleRAID 170LP single channel RAID controller.
Conventions Throughout the manual, the following conventions are used to describe user interaction with the product: prompt This style of type indicates screen display messages Enter Press the key labeled “Enter” (or “Delete”, etc.) ☛ Note Supplementary information that can have an effect on system performance. Caution Notification that a proscribed action has the potential to adversely affect equipment operation, system performance, or data integrity.
Contents Chapter 1 Introduction Product Description .......................................................................... 1–1 Controller Features ................................................................... 1–3 Channel Capabilities ................................................................. 1–3 Controller Capabilities ............................................................... 1–3 Operating System Support ........................................................
BIOS Configuration Utility (RAID EzAssist) ...................................... 3–4 Operating System ............................................................................. 3–4 Operating System Device Drivers ..................................................... 3–4 Global Array Manager (GAM) Client ................................................. 3–4 In Case of Problems .........................................................................
Chapter 1 Introduction This chapter describes: • The AcceleRAID™ 170LP controller • Standard package contents • User supplied items Product Description The Mylex AcceleRAID 170LP controller is a PCI to Ultra 160 SCSI single channel RAID controller with 32-bit, 33MHz PCI capability. The AcceleRAID 170LP supports one external and one internal Ultra 160 SCSI connector. The AcceleRAID 170LP controller provides the speed and functionality required by high demand server platforms.
Product Description Figure 1-1. AcceleRAID 170LP Controller with Standard Bracket Figure 1-2.
Introduction Controller Features Features of the AcceleRAID 170LP controller include: • One QLogic ISP10160A chip to support one Ultra 160 SCSI LVD channel • Intel i960RS RISC processor operating at 100MHz • 16MB ECC SDRAM cache memory, soldered on board (fixed) • PCI 2.
Product Description Operating System Support MS-DOS 6.x and above are supported using drivers that reside in the AcceleRAID BIOS. Drivers in the Disk Array Controller Software Kit, included with the AcceleRAID 170LP controller, support other popular operating systems. (Refer to5 the PCI Disk Array Controller Drivers Installation Guide and User Manual.
Introduction Standard Package Contents The following items are supplied with the standard shipping package: Hardware • AcceleRAID 170LP Disk Array Controller with documentation included on the CD-ROM and a printed Quick Installation Guide • 16MB ECC cache memory, soldered on board (fixed) Software • On-board RAID EzAssist disk array controller configuration utility with documentation on CD-ROM and a printed Quick Configuration Guide • Software Kit Driver diskettes with documentation on CD-ROM • Global Ar
User-supplied Items User-supplied Items The following user-supplied items are required to perform this installation: • IBM-PC™ compatible host system with PCI 2.2 compliant slot • Network operating system software (as required) • SCSI cables to connect the controller and disk arrays (when used in a 2U chassis server, a low profile cable connector may be required)1 • Static grounding strap or electrostatic discharge (ESD) safe work area • Disk array enclosure (or equivalent) with SCSI disk drives 1.
Chapter 2 Installation This chapter describes: • Before You Begin • Safety Considerations • Installation Checklist • Connectors, LEDs, Jumpers • Installation Process • SCSI Termination • Setting SCSI Device IDs • SCSI Cabling • Limitations on Mixing SCSI Drives Mylex disk array controllers are designed to work in a variety of SCSI RAID application environments. Certain configuration steps need to be performed prior to installing the controller into a RAID environment.
Before You Begin Before You Begin Installing the AcceleRAID 170LP single channel RAID controller is no more difficult than installing any 32-bit PCI adapter card. The AcceleRAID 170LP single channel controller connects into any PCI 2.2 compliant slot on the motherboard. Follow these steps and the installation procedures in this chapter. ☛ Note Recommended: Connect the AcceleRAID 170LP into a 32-bit PCI slot to reserve the 64-bit PCI slot for 64-bit controllers.
Installation Table 2-1. SCSI Formats and Bus Lengths SCSI Trade Association (STA) Terms Bus Speed, MB/Sec, Max. Bus Width, Bits Single-ended Max. Bus Length, Meters Low-Voltage Differential Max. Device Support (Including Controller) SCSI-1 5 8 6 - 8 Fast SCSI 10 8 3 - 8 Fast Wide SCSI 20 16 3 - 16 Ultra SCSI 20 8 1.5 - 8 Ultra SCSI 20 8 3 - 4 Wide Ultra SCSI 40 16 - - 16* Wide Ultra SCSI 40 16 1.
Installation Checklist Installation Checklist GET READY ☛ Note 1. 2. 3. 4. It is recommended that you wear a grounded wrist strap when performing hardware installation procedures. ____ Power off your computer system. ____ Verify that you have the correct bracket installed on the controller. ____ Remove the plate from the I/O access port to the PCI slot. ____ Remove the AcceleRAID 170LP board from the anti-static bag. GET SET ☛ Note 5. 6. 7. 8. 9. 10. 11. 12.
Installation Connectors, LEDs, and Jumpers There is one external and one internal Ultra 160 SCSI connector supported on the AcceleRAID 170LP controller shown in Figure 2-1, labeled as CH 0. The AcceleRAID 170LP controller has four LEDs on the front side as shown in Figure 2-2 and described in Table 2-2. The LEDs indicate SE (single ended), LVD, terminator enabled, and FAIL modes. SCSI jumpers should normally be set to their default settings, no adjustments are needed.
Connectors, LEDs, and Jumpers CH0 CH0 Figure 2-1. AcceleRAID 170LP Controller with Channel 0 Connectors D1 D2 D3 D4 Figure 2-2. AcceleRAID 170LP LEDs Table 2-2.
Installation J1 JP1 JP3 JP4 Figure 2-3. AcceleRAID 170LP Jumper Locations Table 2-3. AcceleRAID 170LP Jumper Descriptions JP1 SCSI Activities LED Header JP3 Maintenance Mode JP4 Cache Dirty (monitor cache write back) – LED Header J1 Debug serial edge connector Manual No.
Installation Process Installation Process Follow these installation steps: 1. Choose any available 32-bit or 64-bit PCI slot as shown in Figure 2-4. Figure 2-4. Choose an Available PCI Slot 2. Remove the metal cover plate from the slot’s access port (at the back of the cabinet) usually by releasing the black clip as shown in Figure 2-5. Figure 2-5.
Installation Caution Be sure to wear a ground wrist strap at all times. 3. Remove the AcceleRAID 170LP controller from the anti-static bag, by holding it at the edges, as shown in Figure 2-6. Ground Wrist Strap AcceleRAID 170LP Figure 2-6. Remove the Controller from the Anti-static Bag Manual No.
Installation Process Installing the Controller Into a Standard Chassis If you are using a specially designed 2U chassis, see “Installing the Controller Into a 2U Chassis” on page 2-11. ☛ Note If the controller has the Low Profile PCI bracket installed, replace it with the standard PCI bracket. 1. With the power off, plug (install) the AcceleRAID 170LP controller firmly into any 32-bit or 64-bit PCI slot as shown in Figure 2-7. 32-bit PCI Slot AcceleRAID 170LP Ground Wrist Strap Ground Clip Figure 2-7.
Installation Installing the Controller Into a 2U Chassis Follow these installation steps: (You may need to check the manufacturer’s installation instructions for your particular 2U chassis.) ☛ Note If the controller has the standard PCI bracket installed, replace it with the Low Profile PCI bracket. 1. Choose the riser adapter with an available PCI slot. In this case, it is presented on an angle (Figure 2-8). 2.
Installation Process Preparing the SCSI Drives To prepare the drives for installation, follow these steps: 1. Remove any terminators attached to the drive or set any drive termination jumpers to the disabled position. 2. Set the SCSI IDs on the drives, using a unique address between 0 and 15, but do not use address 7, as it is reserved for the controller. You may need to refer to the instructions that came with your disk drives. 3. Enable term power on the drives.
Installation (b) Connect the SCSI cable from the external SCSI connector on the AcceleRAID 170LP controller to an external drive set or external cabinet enclosure (Figure 2-11). Figure 2-11. Connecting External Disk Drives to the AcceleRAID 170LP (c) Connect internal devices as in (a), and external devices as in (b). The combined configuration is illustrated in Figure 2-12. Figure 2-12. Combined Internal and External Configuration Manual No.
Installation Process ☛ Note A combined configuration using both internal and external connectors works best with high quality cables. It is recommended that you use an Amphenol® Fast 40 LVD, round cable and a Hitachi® twisted pair, flat cable in this unique setup. ☛ Note In order to ensure an error free environment, the proper cable type designed for a certain SCSI speed must be used, please refer to Table 2-4 on page 2-18.
Installation Termination – Only Internal or Only External Devices Check that the drive channel is properly terminated according to drawings below. Termination is indicated with a T enclosed in a square. The AcceleRAID 170LP is equipped with automatic SCSI termination circuitry which handles automatic enabling and disabling of on-board termination. For example, if the controller board is at the end of the SCSI bus, it automatically enables on-board termination.
Installation Process Termination - Both Internal and External Devices Check that the drive channel is properly terminated according to Figure 2-15. Termination is indicated with a T enclosed in a square. If the controller board is in the middle of the SCSI bus, it automatically disables on-board termination.
Installation Setting SCSI Device IDs 5. Set the SCSI ID on the disk drives; ID 7 is reserved for the controller board (Figure 2-16). ☛ Note Each drive must have a unique ID chosen from 0 through 6 or 8 through 15. Be careful not to duplicate a drive address. Remember: ID 7 is reserved for the controller board; therefore, it cannot be used as a disk drive ID. ID’s from 0 through 6 are usually for Narrow, 8-bit devices.
SCSI Cabling SCSI Cabling The controller supports one Ultra 160 SCSI channel which can support up to 15 SCSI devices (plus the controller itself). LVD Mode The controller supports Ultra 160 SCSI with LVD. If all drives attached to a controller drive channel support Ultra 160 SCSI with LVD, then that channel will operate at a maximum of 160MB/s burst speed. This setup allows a maximum SCSI bus length of up to 12 meters.
Installation Limitations on Mixing SCSI Drives Narrow with Wide SCSI Drives If you mix narrow and wide SCSI devices on the controller, use a converter that does not terminate the upper eight bits, and be sure to properly terminate the end of the bus with either a 16-bit terminator or a 16-bit device that has termination enabled.
Limitations on Mixing SCSI Drives 2-20 AcceleRAID 170LP Installation Guide
Chapter 3 Controller Start-up This chapter describes: • BIOS Options Sequence • BIOS Configuration Utility (RAID EzAssist) • Operating System, Device Drivers, GAM • What to Check in Case of Problems This chapter describes the AcceleRAID 170LP RAID controller start-up procedures and messages produced by the BIOS during start-up or re-boot. This chapter also explains three BIOS options that are available for configuring controller operation.
BIOS Options Setting BIOS Options The available BIOS options are: • BIOS disabled / enabled • CD-ROM boot disabled / enabled • 2GB / 8GB drive geometry BIOS Disable or Enable This option must be enabled in order to toggle the CD-ROM boot parameter shown in the BIOS Options menu. The BIOS must also be enabled in order to boot from any device (e.g., CD-ROM) or system drive configured on the controller, or to access any DOS partition on any drive configured on the controller.
Controller Start-up Enable 8 GByte or 2 GByte Drives This setting determines how the System ROM BIOS reads the Logical Drives for partitions. There is a 1024 Cylinder limitation by the System BIOS. The controller can be set to translate this into either 8 gigabytes (8 GB) or 2 gigabytes (2 GB). The default is 8 GB and will be fine for most installations.
BIOS Configuration Utility (RAID EzAssist) from the configuration on disk (COD). BIOS Configuration Utility (RAID EzAssist) RAID EzAssist is the on-board BIOS Configuration Utility used to build several types of RAID configurations. Refer to the RAID EzAssist Configuration Utility User Reference Guide or RAID EzAssist Configuration Utility Quick Configuration Guide for instructions on starting and using this utility.
Controller Start-up In Case of Problems If problems are encountered during start-up, check the following: • Check SCSI cabling for loose connections, pin mismatches (make sure pin 1 on the cable matches pin 1 on the connector), bent pins, and damaged or crossed cables. • Check cable length; this includes internal bus lengths in enclosures. • Check termination. • Check SCSI IDs on all drives. • Check to see if any of the LED lights on the AcceleRAID 170LP controller are on. If the motherboard is PCI 2.
In Case of Problems 3-6 AcceleRAID 170LP Installation Guide
Appendix A AcceleRAID 170LP Specifications General Hardware Specifications AcceleRAID 170LP Controller AcceleRAID 170LP CPU i960RS microprocessor, 100MHz Cache Memory 16MB ECC cache memory soldered on board (fixed) Write: Selectable, Write-Through or Write-Back Error Protection: ECC (Error Correction Code) Firmware ROM Type, Flash EEPROM, 1MB x 8 PCI 32 bit, 33MHz – Host 32 bit, 33MHz – Internal PCI SCSI Supports a single channel Ultra 160 SCSI LVD ISP10160A Manual No.
General Hardware Specifications Environmental Specifications Controller AcceleRAID 170LP Temperature Operating 0°C to +50°C (+32°F to 131°F) Storage -20°C to +70°C (-4°F to +158°F) Operating 10% to 90% relative humidity (non-condensing) Storage 10% to 90% relative humidity (non-condensing) Operating Up to 3,048m (10,000 ft ) Storage Up to 15,240m (50,000 ft) MD2 (Low Profile) Length: 6.6 inches Width: 2.5 inches Humidity Altitude Form Factor Maximum Component 0.
Appendix B AcceleRAID 170LP Error Messages ☛ Note The firmware you are using may have these messages turned off. However, they are listed here for your reference. Start-up Error Messages The BIOS looks for any initialization message posted by the firmware during the start-up sequence. If a message is found, one of the following errors displays on screen and the installation process aborts.
Installation Abort During the initialization, if the firmware fails to respond to the BIOS inquiry within two minutes, the following message displays: AcceleRAID 160 not responding--no drives installed! The BIOS then inquires the firmware for its version number and other information, and displays the following message: AcceleRAID 160 Firmware Version x.
AcceleRAID 170LP Error Messages System Reboot or Power Down Status messages may also be available from LED indicators connected to the controller. The Cache Dirty indicator is especially important when preparing to power-down the system. Caution It is very important to make sure that all data is written to the disk before rebooting or powering down the system, or you may lose data.
System Reboot or Power Down B-4 AcceleRAID 170LP Installation Guide
Appendix C PCI Hot Plug Introduction PCI Hot Plug is a feature that allows a PCI card to be replaced while the host system is still running. The term “Hot Plug” is somewhat misleading: the PCI card cannot simply be pulled out of the host system while the card is operating without risk to the card, the system, and the data on the system. In order to replace a Hot Plug PCI card, a software command must be invoked to power off the card slot before the card can be removed.
Implementation • odineb.nlm – This is a module combining the Open Data-link interface and the Novell Event Bus (NEB). The NEB controls the device drivers through the Open Data-link. If the NetWare installation process determines that the server supports PCI Hot Plug and detects the appropriate driver, the installation process adds the following two LOAD commands to the autoexec.ncf file: • LOAD sys:\system\driver_name This command loads the bus driver (for Compaq, this is cpqsbd.nlm).
PCI Hot Plug Windows NT Windows NT requires additional software from the vendor who makes the system. Since this software is not a part of NT, the software needs to be installed after the operating system is loaded. Refer to your vendor's PCI Hot Plug documentation. Caution GAM drivers can stop PCI Hot Plug Boards from unloading. If this problem occurs, stop GAM and unload the GAM drivers before attempting to unload the PCI Hot Plug controller. Known Windows NT Issues • The macdisk.
Implementation instructions on how to use the PCI Hot Plug feature.
Appendix D Enclosure Management Introduction Mylex’s AcceleRAID controllers support the industry standard enclosure management protocol SCSI Accessed Fault-Tolerant Enclosures (SAF-TE). This feature allows the host to monitor drive enclosures and detect certain faults or operating environment conditions. The host can make a decision to shut down the system or issue a warning based on the type of fault detected. The AcceleRAID 170LP also supports SES (SCSI Enclosure System) cabinets.
SES SES The AcceleRAID 170LP supports SES (SCSI Enclosure System) cabinets. Please refer to the documentation supplied with your SES enclosure cabinet for details on how to take advantage of this feature.
Glossary AcceleRAID™ The AcceleRAID family features high performance, cost effective SCSI to PCI RAID controllers and adapters for high-end desktops, workstations, entry-level and mid-range servers, and high-density ISP servers. Active/Active A synonym for Dual Active controllers. Under normal operating conditions, both controllers in a dual active controller configuration are actively processing I/O. Active/Passive A synonym for Hot Standby.
ASIC Application-Specific Integrated Circuit, a chip created for a specific application. Auto Swap The exchange of a pre-installed replacement unit in a disk system for a defective one; the disk system performs the substitution without human intervention while continuing to carry out its normal functions (compare with Hot Swap). Automatic Rebuild Mylex controllers provide automatic rebuild capabilities in the event of a physical disk drive failure.
Glossary against which all products are measured and compared is referred to as the benchmark. Programs can be specially designed to provide measurements for a particular operating system or application. Berkeley RAID Levels A family of disk array protection and mapping techniques described by Garth Gibson, Randy Katz, and David Patterson in papers written while they were performing research into I/O systems at the University of California at Berkeley.
Caching Allows data to be stored in a pre-designated area of a disk or RAM. Caching speeds up the operation of RAID systems, disk drives, computers and servers, or other peripheral devices. See also Cache. CD-ROM Compact Disk-Read Only Memory, a removable read-only storage device, similar to an audio compact laser disk, holding up to 640MB of data. Channel Any path used for the transfer of data and control of information between storage devices and a storage controller or I/O adapter.
Glossary CPU Central Processing Unit, the circuitry that performs the basic instructions that drive the computer. Critical State A Logical Drive is in a “critical” state if it has been configured at RAID level 1, 3, 5, or 0+1, and one (and only one) of its SCSI drives is not “online.” A logical drive is considered “critical” because any failure of another of its SCSI drives may result in a loss of data. Note: I/O operation can only be performed with system drives that are online or critical.
Desktop PC Standard processor based personal computer used as an individual station (not as a server). Device Driver A software program that controls a particular type of device attached to a computer, such as a RAID subsystem, printer, display, CD-ROM, disk drive, etc. Differential A protocol that transmits through a current loop rather than by changes in voltage, reducing susceptibility to electrical interference. DIMM Dual In-line Memory Module, a circuit board that has memory chips.
Glossary Disk Failure Detection A RAID controller automatically detects SCSI disk failures. A monitoring process running on the controller checks, among other things, elapsed time on all commands issued to disks. A time-out causes the disk to be “reset” and the command to be retried. If the command times out again, the controller could take the disk “offline.” Mylex DAC960 controllers also monitor SCSI bus parity errors and other potential problems.
EDO Extended Data Output, a type of random access memory (RAM) chip designed to improve the time to read from memory on faster microprocessors such as the Intel® Pentium®. EISA Extended Industry Standard Architecture, a bus standard for PCs extending the ISA architecture to 32 bits and allowing more than one CPU to share the bus.
Glossary the “2” and “5” refer to the coaxial cable segment length (the 185 meter length has been rounded up to “2” for 200); the “F” represents fiber optic cable. External RAID Controller A RAID controller in its own enclosure, rather than incorporated into a PC or server. External RAID controllers are often referred to as a Bridge RAID Controller. Mylex SANArray FL, FF, FFx, and Pro FF2 controllers are external RAID controllers. Compare with Internal RAID Controller.
Failover Port A fibre channel port capable of assuming I/O requests for another, failed port on the loop. During normal operation, a failover port may be active or inactive. Failover ports assume the same loop ID and, optionally, the same node from the failed port. Failure A detectable physical change in hardware, requiring replacement of the component. Fast Ethernet A local area network (LAN) transmission standard that provides a data rate of 100 megabits per second (referred to as 100BASE-T).
Glossary Fast/Wide SCSI SCSI devices using data rates up to 20 MHz. Compare with Fast SCSI, Ultra SCSI (Fast 20 SCSI), Ultra2 SCSI (Fast 40 SCSI), Ultra160 SCSI (Ultra3 SCSI), and Wide SCSI. Fibre Channel Technology for transmitting data between computer devices at a data rate of up to 2 Gbps (two billion bits per second), especially suited for connecting computer servers to shared storage devices and for interconnecting storage controllers and drives.
Global Hot Spare An extra, physical disk drive placed in an array and used to replace a failed drive in any disk array. A global spare automatically takes the place of a failed drive. See also Auto Swap, Dedicated Hot Spare, and Hot Spare. Hard Disk A magnetically coated disk substrate that spins inside a disk drive and is used as the storage medium for digital data. Hard Disk Drive (HDD) The main data storage unit of a computer.
Glossary Hot Replacement of Disks The design of all Mylex controllers allows for the replacement of failed hard disk drives without interruption of system service. In the event of a SCSI drive failure on a properly configured system (where the data redundancy features of the controller are used), the system generates a message to alert the system operator.
Interface A hardware or software protocol that manages the exchange of data between the hard disk drive and the computer. The most common interfaces for small computer systems are ATA (advanced technology attachment), also known as IDE (integrated drive electronics), and SCSI. Internal RAID Controller A controller circuit board that resides inside a computer or server. An internal RAID controller resides on a bus, such as the PCI bus. Examples the Mylex AcceleRAID and eXtremeRAID families.
Glossary I2O Intelligent Input/Output, a driver that uses special I/O processes to eliminate I/O bottlenecks. The processes deal with interrupt handling, buffering, and data transfer. An I2O driver also includes an OS-specific module (OSM), which handles higher-level OS details, and a hardware device module (HDM), which knows how to communicate with certain devices. ISA Industry Standard Architecture, a standard bus (computer interconnection) architecture associated with the IBM® AT® motherboard.
Logical Drive The logical devices presented to the operating system. System drives are presented as available disk drives, each with a capacity specified by the Mylex RAID controller. Logical Drive States A logical (system) drive can be Online, Critical, or Offline. Notice that the term “online” is used for both physical and logical drives. See also Storage Device. LUN Logical Unit Number, a SCSI representation of a system drive on a given channel and target ID.
Glossary Megabyte 220 (1,048,576) bytes. One megabyte can store more than one million characters. Abbreviated as M or MB. Mirrored Cache A cache memory that has duplicate data from another controller. In the event of failure of the original controller, the second controller can take the cached data and place it on the disk array. Mirrored Hard Drive Two hard drives the computer sees as one unit. Information is stored simultaneously on each drive.
During the RAID set expansion process, which includes re-striping data from the old (smaller) RAID set to the new (expanded) RAID set, the controller continues to service host I/O requests. MTBF Mean Time Between Failures, the average time from start of use to failure in a large population of identical systems, computers, or devices. MTDL Mean Time until Data Loss, the average time from startup until a component failure causes a permanent loss of user data in a large population of disk arrays.
Glossary Online A Logical Drive is in an “online” state if all of its participating SCSI drives have power and are operational. See also Logical Drive States, Critical State, and Offline. Partitioning Where the full usable storage capacity of a disk or array of disks appears to an operating environment in the form of several virtual disks whose entire capacity approximates that of the underlying disk or array.
Physical Disk Drive A single hard disk drive. Each physical disk drive is assigned a unique identification address. Platform An underlying computer system on which application programs can run. A platform consists of an operating system, the computer system's coordinating program, and a microprocessor, the microchip in the computer that performs logic operations and manages data movement in the computer.
Glossary RAID Controller Low cost RAID controllers that use SCSI channels on the motherboard. RAID Levels Mylex disk array controllers support four RAID Advisory Board approved (RAID 0, RAID 1, RAID 3, and RAID 5), two special (RAID 0+1, and JBOD), and three spanned (RAID 10, 30, and 50) RAID levels. All DAC960, AcceleRAID, and eXtremeRAID series controllers support these RAID levels. See also Berkeley RAID Levels.
Note: The host operating system drivers and software utilities remain unchanged regardless of the level of RAID installed. The controller makes the physical configuration and RAID level implementation. RAID Migration A feature in RAID subsystems that allows for changing a RAID level to another level without powering down the system. Rebuild The process of reconstructing data from a failed disk using data from other drives.
Glossary Rotated XOR Redundancy XOR refers to the Boolean “Exclusive-OR” operator. Also known as Parity, a method of providing complete data redundancy while requiring only a fraction of the storage capacity of mirroring. In a system configured under RAID 3 or RAID 5 (which require at least three SCSI drives), all data and parity blocks are divided amongst the drives in such a way that if any single drive is removed (or fails), the data on it can be reconstructed using the data on the remaining drives.
have endorsed the SAF-TE specification. Products compliant with the SAFTE specification will reduce the cost of managing storage enclosures, making it easier for a LAN administrator to obtain base-level fault-tolerant alert notification and status information. All Mylex RAID controllers feature SAF-TE.
Glossary memory. This information is retained even after power-off. Hence, if a SCSI disk is labeled “dead” in one session, it will stay in the “dead” state until a change is made either by using a system level utility or after a rebuild. Each state is described below. Ready: A SCSI disk drive is in a “ready” state if it is powered on and is available to be configured during the current session but remains unconfigured.
enclosure containing one or more SCSI devices. For disk drives, power supplies, cooling elements, and temperature sensors, the actions performed are the same as for SAF-TE monitoring. If a UPS is connected to any SESmonitored enclosures, and an AC failure or two minute warning is reported, conservative cache is enabled and all system drives are switched to writethrough cache. Primarily used in fibre enclosures.
Glossary During the automatic rebuild process, system activity continues as normal. System performance may degrade slightly during the rebuild process. To use the standby rebuild feature, you should always maintain a standby SCSI disk in your system. When a disk fails, the standby disk will automatically replace the failed drive and the data will be rebuilt. The system administrator can disconnect and remove the bad disk and replace it with a new disk.
System Disk The disk on which a system’s operating software is stored. System Drives See Logical Drives Target ID The SCSI ID of a device attached to a controller. Each SCSI channel can have up to 15 attached SCSI devices (target ID from 0 to 6 and 8 to 15). TCP/IP Transmission Control Protocol/Internet Protocol, the basic communication language or protocol of the Internet. It can also be used as a communications protocol in intranets and extranets.
Glossary TPC-C, Tpm-C The Transaction Processing Performance Council (TPC) is a standards organization that measures transaction throughput of systems. One of their benchmarks is Tpm-C, which reflects price and performance metrics. TPC-C reflects new order transaction rate, a benchmark for transaction speed. Mylex products have won consistently high TPC-C results.
Megabytes in the Wide SCSI (Wide Ultra2 SCSI) configuration. Compare with Fast SCSI, Fast/Wide SCSI, Narrow SCSI, Ultra SCSI (Fast 20 SCSI), Ultra Wide SCSI, Ultra 160 SCSI (Ultra3 SCSI), and Wide SCSI. WAN Wide Area Network, a geographically broader telecommunication structure as opposed to a local area network (LAN) that comprises of two or more LANs.
Glossary Manual No.
G-32 AcceleRAID 170LP Installation Guide
Error Messages B–1 drive check B–1 start-up B–1 system reboot or power down A Aborted Installation B–2 AcceleRAID 160 1–1 capabilities 1–3 channels 1–3 features 1–3 operating system support product description 1–1 specifications A–1 Automatic circuitry 2–15 B–3 F 1–4 FCC Declaration of Conformity 1–4 H hardware specifications Hot Plug (PCI) C–1 B BIOS Enable 8 GByte or 2 GByte Drives 3–3 Enable/Disable 3–2 BIOS Configuration Utility 3–4 BIOS Options setting 3–2 BIOS Options Sequence 3–1 C Cables 2
NetWare C–1 Windows 2000 C–3 Windows NT C–3 Physical drives 1–3 Product Description 1–1 R RAID EzAssist 3–4 RAID levels supported single-ended (SE) Termination disabled Terminator 2–14 2–14 2–16 U UL Statement 1–7 User-supplied Items 1–6 1–3 S Safety 2–3 SAF-TE D–1 SCSI cables 2–12 SCSI connector 2–12 SCSI device configuration 2–14 SCSI Device IDs 2–17 SCSI drives 2–19 preparing 2–12 SCSI ID numbers 2–17 SCSI IDs 2–17 SES (SCSI Enclosure System) D–2 Setting Termination 2–12 Single-ended Mode 2–18 Spe
LSI LOGIC CORPORATION SOFTWARE LICENSE AND WARRANTY POLICY Limited Warranty LSI warrants to the original purchaser of the product enclosed herein (“Customer”) that (a) for a period of three (3) years from the date of Customer’s purchase of the Product (excluding batteries and memory) (the “Product Warranty Period”), and (b) for a period of one (1) year from the date of purchase of the Product by Customer (the “Battery/Memory Warranty Period”), the batteries and memory included in the Product will (i) be fre
with LSI’s instructions and the terms of this Agreement, shipping costs to be borne by LSI, and (c) Customer has provided proof of purchase price and date for unregistered Product. LSI shall bear one-way shipping, packing and insurance costs and all other costs, excluding labor and parts, necessary to effectuate repair or replacement under this warranty. All Product repaired or replaced under this warranty shall be returned to Customer at Customer’s expense.
is a part of the Product (“LSI Software”) solely as part of the Product incorporated into the OEM Products that and not on a standalone basis.
Manual No. DB11-000024-00 08P5513 LSI Logic Corporation North American Headquarters Milpitas, CA 408.433.
