AcceleRAID™ Installation Guide AcceleRAID 150 PCI to Ultra2 SCSI RAID Controller P/N: 775020-01
AcceleRAID™ Installation Guide AcceleRAID™ 150 (DAC960PRL-1) PCI to Ultra2 SCSI RAID Controller Part Number 775020-01 © Copyright 1999 Mylex Corporation. All Rights Reserved. All contents of this manual are copyrighted by Mylex Corporation.
Greetings Thank you for purchasing the Mylex AcceleRAID™ 150 controller. This manual describes the installation of the Mylex AcceleRAID 150 controller. Requests for technical information about this and other Mylex Corporation products should be made to your Mylex authorized reseller or Mylex sales representative. Please Notice Mylex is a registered trademark, and AcceleRAID, DAC960PRL, and RAID EzAssist are trademarks of Mylex Corporation.
About This Manual This installation guide covers hardware set-up and configuration procedures necessary for the installation of the Mylex AcceleRAID 150 PCI to Ultra2 SCSI RAID controller. Chapter 1 describes the controller, standard package contents, and usersupplied items necessary for installation. Chapter 2 describes steps to be performed prior to controller installation and the physical installation of the controller.
Contents Chapter 1 Introduction Product Description ........................................................................... 1-1 AcceleRAID 150 Controller Features ......................................... 1-3 Operating System Support ................................................................ 1-3 Standard Package Contents ............................................................. 1-4 Hardware .................................................................................... 1-4 Software .....
RAID EzAssist Configuration Utility Sequence .................................. 3-6 Operating System .............................................................................. 3-7 Installing the AcceleRAID as the Primary Controller .................. 3-7 Installing the AcceleRAID into an Existing System with a SCSI Boot Device .............................................................................. 3-7 Operating System Device Drivers ......................................................
Appendix E Regulatory Information Class B Compliance ...................................................................E-1 Declaration of Conformity ...........................................................E-2 Declaration of Conformity ...........................................................E-3 Community of Europe ................................................................E-4 Underwriters Laboratories ..........................................................E-4 Glossary Manual No.
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Chapter 1 Introduction This chapter describes: • Product description • Standard package contents • User supplied items Figure 1-1. AcceleRAID 150 Disk Array Controller Product Description The AcceleRAID™ 150 (DAC960PRL-1) is a single-channel PCI-to-Ultra2 SCSI, LVD (Low Voltage Differential) RAID Controller. It has all the functions and performance characteristics of the Mylex line of RAID controllers for several popular network operating systems.
Product Description Mylex’s AcceleRAID 150 can be used in either one of the following two situations: 1. A cost-effective, single-channel, standard PCI RAID controller board, which may reside in any PCI slot (to implement a standard RAID connection), or 2. A cost-effective PCI RAID controller board with SISL, which must reside in the prewired, SISL-dedicated slot on a system board (to implement a SISL connection).
Introduction AcceleRAID 150 Controller Features Includes the following features: • Ability to operate in an ordinary PCI slot as a single-channel RAID controller in any PCI system. • Ability to add the functionality of an additional RAID SCSI channel which is a Wide Ultra2 SCSI RAID LVD channel (see the note below for further explanation). ☛ Note The AcceleRAID 150 will work as a single-channel, Wide Ultra2 SCSI LVD RAID controller with a system board that has an available PCI slot.
Standard Package Contents Standard Package Contents The following items are supplied with the standard shipping package: Hardware • AcceleRAID 150 Disk Array Controller with documentation Software • Disk Array Controller Configuration (RAID EzAssist™) utility with documentation on CD-ROM • Disk Array Controller Software Kit with documentation on CD-ROM • OS drivers (controller drivers) on diskette • Global Array Manager (GAM client and GAM Server) with documentation on CD-ROM AcceleRAID 150 Controller M
Introduction User-supplied Items The following user-supplied items are required to perform this installation: • Host system with a PCI slot, or • Host system with a prewired SISL supported PCI slot in order to use the SISL feature • SCSI cables to connect SCSI channels to disk drives • Operating system software • Static grounding strap or electrostatic discharge (ESD) safe work area • Disk array enclosure (or equivalent) and SCSI disk drives ☛ Note The supported SCSI drive types include Ultra2 SCSI with L
User-supplied Items 1-6 AcceleRAID 150 Installation Guide
Chapter 2 Installation This chapter describes: • Before you begin • Connectors, Jumpers, and LED’s • Safety considerations: Caution and Warning notes • Installing the AcceleRAID 150 board (controller) AcceleRAID 150 with Standard PCI Bus ☛ Note If you will be installing the AcceleRAID 150 controller board with the SISL feature, please go to the section titled “AcceleRAID 150 with SISL (SCSI Interrupt Steering Logic)” on page 2-15.
Before You Begin (Standard) Before You Begin (Standard) Installing a standard AcceleRAID 150 PCI to Ultra2 SCSI RAID controller board is no more difficult than installing any PCI adapter board. Follow these steps and then follow the installation procedures in this chapter. Occasionally, you may need to refer to the instructions that came with your computer system. , WARNING Power OFF the system and disconnect the power cord from the electrical wall outlet before opening the system cabinet.
Installation 1. Power OFF the system and any enclosures, such as a tower, and disconnect the power cord and cables before starting the installation. Refer to the instructions provided in your system documentation. Do not disconnect cables or power cords while system power is ON. 2. Read all of the instructions in this chapter completely before proceeding. Follow the Notes, Cautions, and Warnings described in this manual and marked on the equipment. 3.
Standard Installation Checklist Standard Installation Checklist GET READY ☛ Note It is recommended that you wear a grounded wrist strap when working with hardware installation procedures. 1. ____ Decide which available standard PCI slot will be used. 2. ____ Remove the plate from the I/O access port to the PCI slot. 3. ____ Remove the AcceleRAID 150 controller board from the antistatic bag. 4. ____ Check Jumper 10 (JP10). If it is installed on the jumper pins, remove it according to Figure 2-6.
Installation Connectors, Jumpers, and LED’s (Standard) Figure 2-1 is a diagram of the AcceleRAID 150 Low Profile board. J1 Internal Connector (68-Pin High Density) J2 External Connector (VHDCI) U1 JP1 SE LVD JP4 JP5 JP10 Note: J1 and J2 are both on the same Channel. Figure 2-1. AcceleRAID Connectors, Jumpers, and LED’s Table 2-1.
Controller Board Installation (Standard) Controller Board Installation (Standard) m Caution Anti-static handling procedures are required. Leave the controller board in its anti-static bag until it is time to plug it into the PCI slot. Wearing a grounded wrist strap (see Figure 2-2), having the power cord pluged into an electric-ground wall outlet, having the computer power turned off, and following other ESD protective measures are highly recommended.
Installation Follow these installation steps: 1. Choose any available standard PCI slot as shown in Figure 2-3. Figure 2-3. Choose an Available PCI Slot 2. Remove the metal cover plate from the slot’s access port (usually at the back of the cabinet). Save the retaining screw as shown in Figure 2-4. . Metal Plate Remove screw to remove metal plate. Save screw to tighten the controller board. Figure 2-4. Remove the Metal Plate Manual No.
Controller Board Installation (Standard) 3. Remove the AcceleRAID 150 controller board from the anti-static bag as shown in Figure 2-5. Figure 2-5. Remove the Anti-static Bag 4. If Jumper 10 (JP10) is installed, place it on only one peg to the OFF position, as shown in Figure 2-6, when using the standard AcceleRAID 150 configuration. Figure 2-6.
Installation 5. Plug the controller board firmly into the selected standard PCI slot as shown in Figure 2-7. System Board Plug Controller into any Available PCI Slot Figure 2-7. Plug Controller Board into any Standard PCI Slot 6. Use the retaining screw (see Figure 2-4) to tighten the controller board by its mounting bracket. The controller board will go into the space created when you removed the metal plate. Manual No.
Controller Board Installation (Standard) 7. Connect the SCSI cables from the disk drives to a SCSI connector on the AcceleRAID 150 controller board, as shown in Figure 2-8. (The controller board is already connected to the system board.) If necessary, refer to Table A-1 on page A-1 for SCSI formats and bus lengths. ☛ Note In order to ensure an error free environment, the proper cable type designed for a certain SCSI speed must be used.
Installation 8. Termination - Only Internal or External Devices (Standard) Check that the drive channel is properly terminated according to drawings below. The AcceleRAID 150 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.
Controller Board Installation (Standard) 9. Termination - Both Internal and External Devices (Standard) Check that the drive channel is properly terminated according to drawing below. If the controller board is in the middle of the SCSI bus, it automatically disables on-board termination.
Installation 10. Remove or set disk drive termination jumpers to the disabled position (if needed). Refer to your system documentation furnished with your disk drives to determine if your termination jumpers need to be adjusted. 11. Set the SCSI ID on the disk drives: ID 7 is reserved for the controller board. ☛ 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 on the same channel.
Controller Board Installation (Standard) 12. Enable termination power to all the disk drives (usually there is a jumper on the drive). See your device documentation for instructions on how to set your particular disk drive’s termination power and configuration options. ☛ Note The supported SCSI drive types include Ultra2 SCSI with LVD as well as the following single-ended SCSI types: SCSI-1, Fast SCSI, Wide Fast SCSI, Ultra SCSI, Wide Ultra SCSI, and Wide Ultra2 SCSI. 13.
Installation AcceleRAID 150 with SISL (SCSI Interrupt Steering Logic) ☛ Note If you will be installing the AcceleRAID 150 controller board as a standard unit without the SISL feature, please go to the section titled “AcceleRAID 150 with Standard PCI Bus” on page 2-1. m Caution If an operating system or existing data resides on drives connected to the system board’s resident SCSI channels, a full backup must be performed on these drives prior to this installation. Manual No.
Before You Begin (SISL) Before You Begin (SISL) Installing AcceleRAID PCI to Ultra2 SCSI RAID controller board is no more difficult than installing any PCI adapter board. Follow these steps and then follow the installation procedures in this chapter. Occasionally, you may need to refer to the instructions that came with your computer system. , WARNING Disconnect the system from the electrical wall outlet before opening the system cabinet.
Installation 3. Safety check the installation before powering ON the system. • Make sure cables are properly oriented so that the colored stripe (Pin 1) on the edge of the ribbon cable aligns with Pin 1 on the connector (see Figure 2-13). Pin 1 This is a connector on the system board, face up. Align the colored stripe on the edge of the ribbon SCSI cable to Pin 1 on the connector. Note: the colored stripe is Pin 1 in the SCSI cable. Figure 2-13.
SISL Installation Checklist SISL Installation Checklist GET READY ☛ Note It is recommended that you wear a grounded wrist strap when working with hardware installation procedures. 1. ____ Locate the prewired SISL slot, see your system documentation. 2. ____ Remove the plate from the I/O access port to the SISL PCI slot. 3. ____ Remove the AcceleRAID 150 controller board from the antistatic bag. 4. ____ Check Jumper 10 (JP10).
Installation Connectors, Jumpers, and LED’s (SISL) Figure 2-14 is a design example of the AcceleRAID 150 Low Profile board. J1 Internal Connector (68-Pin High Density) J2 External Connector (VHDCI) U1 JP1 SE LVD JP4 JP5 JP10 Note: J1 and J2 are both on the same Channel. Figure 2-14. AcceleRAID Connectors, Jumpers, and LED’s Table 2-2.
Controller Board Installation (SISL) Controller Board Installation (SISL) m Caution Anti-static handling procedures are required. Leave the controller board in its anti-static bag until it is time to plug it into the PCI slot. Wearing a grounded wrist strap (see Figure 2-15), having the power cord pluged into an electric-ground wall outlet, having the computer power turned off, and following other ESD protective measures are highly recommended.
Installation Follow these installation steps: 1. Choose the dedicated PCI slot that was prewired for SISL functionality, (see your system documentation to identify the position of the SISL slot on your system board) as shown in Figure 2-16. Figure 2-16. Identify SISL PCI Slot 2. Remove the metal cover plate from the slot’s access port (usually at the back of the cabinet) as shown in Figure 2-17. Save the retaining screw. Metal Plate Remove screw to remove metal plate.
Controller Board Installation (SISL) 3. Remove the AcceleRAID 150 controller board from the anti-static bag as shown in Figure 2-18. Figure 2-18. Remove Controller Board from the Anti-Static Bag 4. If Jumper 10 (JP10) is not in place, install it (ON position), as shown in Figure 2-19, when using the AcceleRAID 150 with the SISL feature. Figure 2-19.
Installation 5. Plug the AcceleRAID 150 controller board firmly into the dedicated, prewired SISL PCI slot as shown in Figure 2-20. System Board T Channel 0 T Plug Controller into the Specially Wired SISL PCI Slot Wide SCSI Connector on System Board (Ch 1) Narrow SCSI Connector on System Board (Ch 2) Figure 2-20. AcceleRAID 150 in a Typical SISL Installation 6. Use the retaining screw (see Figure 2-17) to secure the controller board by its mounting bracket.
Controller Board Installation (SISL) 7. Connect the SCSI cables from the disk drives to the drive channels, as required, according to the example shown in Figure 2-21. (The controller board is already connected to the system board.) If necessary, refer to Table A-1 on page A-1 for SCSI formats and bus lengths. ☛ Note In order to ensure an error free environment, the proper cable type designed for a certain SCSI speed must be used.
Installation 8. AcceleRAID 150 Termination (SISL) Check to confirm that all drive channels are properly terminated as shown in Figure 2-22. The AcceleRAID 150 is equipped with automatic SCSI termination circuitry for the SCSI channel that resides on the AcceleRAID board. If the controller board is at the end of the SCSI bus, it automatically enables on-board termination.
Controller Board Installation (SISL) 9. SCSI Termination for Embedded System Board Channels (SISL) Correct termination is critical for the SCSI channels. Termination on the end of the bus connecting the disk drives (or other SCSI devices) is required. SCSI termination for the SCSI channels that reside on the system board need to be properly controlled (notice the terminator “T” symbol) as shown in Figure 2-23. You may also want to refer to documentation that was provided with your system.
Installation 10. Remove or set disk drive termination jumpers to the disabled position (if needed). Refer to your system documentation furnished with your disk drives to decide if your termination jumpers need to be adjusted. 11. Set the SCSI ID on the disk drives: ID 7 is reserved for the controller board, as shown in Figure 2-24. ☛ 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 on the same channel.
Controller Board Installation (SISL) 12. Enable termination power to all the disk drives (usually there is a jumper on the drive). See your device documentation for instructions on how to set your particular disk drive’s termination power and configuration options. ☛ Note The supported SCSI drive types include Ultra2 SCSI with LVD as well as the following single-ended SCSI types: SCSI-1, Fast SCSI, Wide Fast SCSI, Ultra SCSI, Wide Ultra SCSI, and Wide Ultra2 SCSI.
Installation m Caution If the SCSI channels embedded on the system board are controlled by a Symbios Logic® chipset, the Symbios BIOS must be disabled in the system BIOS before proceeding with RAID configuration, or with operating system or driver installation. This is to allow the AcceleRAID 150 to take over control of the system board's embedded channels without any conflicts.
Controller Board Installation (SISL) 2-30 AcceleRAID 150 Installation Guide
Chapter 3 Controller Board Start-up This chapter describes: • Start-up procedures • BIOS options • RAID EzAssist Configuration Utility • Driver Installation • What to check in case of problems This chapter describes the AcceleRAID 150 controller start-up procedures and messages produced by the BIOS during start-up or reboot. This chapter also explains three BIOS options that are available for configuring the controller operation. Procedural Overview The steps covered in this chapter include: 1.
Controller Board Start-up Controller Board Start-up The start-up procedure should be performed prior to any software configuration. There are two start-up sequences: the BIOS Options sequence and the BIOS Configuration Utility sequence. Either start-up sequence can be skipped by ignoring the and/or the prompt when the computer is started up.
Controller Board Start-up Setting BIOS Options The available BIOS options are: • BIOS disabled / enabled • CD-ROM boot disabled / enabled • 2 GB / 8 GB drive geometry BIOS Disable or Enable This option must be enabled in order to toggle the CD-ROM boot and the drive geometry parameters shown in the BIOS Options menu. The CD-ROM BIOS must also be enabled in order to boot from any device (e.g.
BIOS Options Sequence Enable 2 GByte or 8 GByte Drives This setting affects how the BIOS reads the disk drives. Drive geometries can be toggled between 2 GB and 8 GB. The default is 2 GB. When the drive geometry setting is changed, the drive must be low level formatted. m Caution Changing this setting after data has been stored will make the data unreadable. If you have already configured your array and have stored data, you should not change this setting.
Controller Board Start-up As a rule of thumb, select 8 GB geometry if the following three cases apply: 1. You have a system (RAID) drive that is greater than 2.145 GB in capacity. 2. The DOS/Windows compatible partitions could be located in an area above the first 2.145 GB. Otherwise the 2 GB option is fine. ☛ Note In the event that the RAID controller needs to be replaced, the current drive geometry will be restored from the configuration on disk (COD). Manual No.
RAID EzAssist Configuration Utility Sequence RAID EzAssist Configuration Utility Sequence After the BIOS options have been set as desired, do the following: 1. Power ON the computer (or allow the computer to restart normally after the BIOS options have been set). 2. Watch the messages on the screen for the following prompt to be displayed: Press for BIOS options 3. Wait approximately 5 seconds. Do not press any keys at this time. 4.
Controller Board Start-up Operating System If an operating system is not already installed on the system, it can be installed on a system disk on the controller. The operating system is installed along with the operating system device drivers. Installing the AcceleRAID as the Primary Controller Follow the procedures indicated in the appropriate operating system chapter of the Disk Array Controller Software Kit User’s Manual when installing AcceleRAID along with the operating system software.
Operating System Device Drivers 6. Change the Option ROM Scan to DISABLED. Enable Master should be set to ENABLED, and Latency Timer should be at least 0040h. 7. Save the settings and exit by pressing F10. 8. At the memory check, power down the server. Install the AcceleRAID as the primary controller as documented: 1. Install the AcceleRAID controller hardware and disk drives, and cable and terminate properly as described in Chapter 2. 2.
Controller Board 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. • Remove the system cover, power ON the system and observe the LEDs (see Figure 3-1).
In Case of Problems • Check the LED lights when controller is installed. (See the LED section of Table 2-1, “AcceleRAID Connectors, Jumpers, and LED Descriptions,” or see the excerpt below for details.) U1 J1 Internal Connector (68-Pin High Density) J2 External Connector (VHDCI) U1 JP1 LVD SE SE LVD JP4 JP5 Figure 3-1. LED Descriptions U1 LED, ON indicates the controller card failed internal diagnostics during start-up.
Appendix A Installation Notes Helpful AcceleRAID Installation Notes The purpose of this appendix is to provide additional information about your AcceleRAID 150 installation of either the Standard or SISL configuration. There are cross references to direct you to the appropriate topic in the main installation section of this manual. SCSI Formats and Bus Lengths Table A-1. Supported SCSI Formats and Bus Lengths Bus Speed, MB/Sec, Max. Bus Width, Bits Single-ended Low-Voltage Differential Max.
SCSI Cabling for AcceleRAID 150 (Standard and SISL) SCSI Cabling for AcceleRAID 150 (Standard and SISL) An Ultra SCSI or an Ultra2 SCSI channel supports up to 15 SCSI devices. Examples of SCSI devices include hard disk, tape, and CD-ROM. m Caution Wide and narrow SCSI cables must not be installed together on any one channel, or the AcceleRAID controller may not work properly. LVD Mode The controller supports Ultra2 SCSI with LVD.
Appendix B AcceleRAID Specifications General Hardware Specifications AcceleRAID Controller DAC960PRL CPU Intel i960 RP® RISC 32-bit microprocessor, 33MHz Memory EDO parity memory 60ns 4 MB or 16 MB Cache Write: Selectable, Write Through or Write Back Error Protection: Parity Firmware PCI SCSI ROM Type, Flash EEPROM, 512K x 8 I/O Processor: Embedded in Intel i960 RP microprocessor Transfer Rate: 132 MB/second (burst) I/O Processor: Number of Controller Channels Manual No.
Environmental Specifications Environmental Specifications Controller DAC960PRL Temperature Operating 0°C to +50°C (+32°F to 122°F) Storage -20°C to +60°C (-4°F to +140°F) [was +70°C, 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) Length: 7.225 inches Width: 4.2 inches Humidity Altitude Form Factor [was +55°C, 131°F] Maximum. Component 0.
AcceleRAID Specifications DAC960PRL Block Diagram (Standard) Figure B-1 (example of a system board block diagram) shows a standard configuration to use the Mylex AcceleRAID 150 Controller with any available PCI Bus Slot on a capable system board. AcceleRAID 150 DAC960PRL Controller CPU RAID FW Cache Memory NVRAM I960RP PCI Interface Control Logic SCSI Protocol Chip Term. PCI Bus Slot PCI Bus Slot PCI Bus Slot PCI Bus Slot PCI Bus Slot System Board Figure B-1.
DAC960PRL Block Diagram (SISL) DAC960PRL Block Diagram (SISL) Figure B-2 (example of a system board block diagram) shows the functional relationship between the Mylex AcceleRAID 150 Controller and the SCSIcapable system board. The SCSI chip interrupt line(s) are routed to a PCI bus slot (shaded to indicate SISL availability) specifically preconfigured to accept the controller. The non-shaded PCI bus slots indicate an example of available SCSI connections that are not intended for SISL activity.
Appendix C AcceleRAID Error Messages Error Messages 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.
Aborted Installation During the initialization, if the firmware fails to respond to the BIOS inquiry within two minutes, the following message displays: DAC960Pn not responding--no drives installed. The BIOS then inquires the firmware for its version number and other information, and prints out the following message: DAC960Pn firmware version x.
AcceleRAID Error Messages NVRAM Error With Firmware 4.x, if the BIOS displays a mismatch between the NVRAM and the COD, no drives will be installed. Normally this error will not be displayed. If it is, boot and run the RAID EzAssist (previously BIOS) Configuration Utility (see “RAID EzAssist Configuration Utility Sequence” on page 3-6) to recover from the error. For more information, refer to the RAID EzAssist Configuration Utility User Reference Guide (P/N 775029).
System Reboot or Power Down C-4 AcceleRAID 150 Installation Guide
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.
SAF-TE D-2 AcceleRAID 150 Installation Guide
Appendix E Regulatory Information Class B Compliance 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. All external connections should be made using shielded cables.
Declaration of Conformity Per FCC Part 2, Section 2.1077(a) Mylex Corporation Manufacturer’s Name: Manufacturer’s Address: 34551 Ardenwood Blvd. Fremont, CA 94555-3607 USA Declares that the product: Product Name: AcceleRAID 150 Ultra2 SCSI RAID Controller Model Number(s): DAC960PRL-1 Year of Manufacture: 1998 Conforms to the following Product Specification(s): CFR 47 Part 15, Subpart B, Section 15.107(e) FCC: and Section 15.109(g) Class B Digital Device tested per ANSI C63.
Regulatory Information Declaration of Conformity Per 89\336\EEC Responsible Party Name: Mylex Corporation Address: 34551 Ardenwood Boulevard Fremont, CA 94555-3607 USA hereby declares that the product Trade Name: Model Number: AcceleRAID 150 Ultra2 SCSI RAID Controller DAC960PRL-1 conforms to the following specifications Standards: EN 50081-1:1992, EMI EN 55022 Class B (Radiated), Class B (Conducted) EN 50082-1:1992, Immunity EN 61000-4-2:1995 Electrostatic Discharge EN 61000-4-3:1996 Radiated Suscept
Community of Europe CE mark is rated for the AcceleRAID 150 Ultra2 SCSI RAID Controller as follows: CISPR 22 Radiated Emission EN55022, EN5082-1 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.
Glossary Cache Controller memory used to speed up data transfer to and from a disk. Cache Flush Refers to an operation where all unwritten blocks in a Write-Back Cache are written to the target disk. This operation is necessary before powering down the system. Cache Line Size The Cache Line Size function is set in conjunction with stripe size and represents the size of the data “chunk” that will be read or written at one time. Channel Refers to one SCSI bus on a disk array controller.
Disk Media Error Management When a disk reports a media error during a read, the controller reads the data from the mirror (RAID 1 or 0+1), or computes the data from the other blocks (RAID 3, RAID 5), and writes the data back to the disk that encountered the error. If the write fails (media error on write), the controller issues a “reassign” command to the disk, and then writes the data to a new location. Since the problem has been resolved, no error is reported to the system.
Glossary When a replacement drive becomes available, the system operator can remove the failed disk drive, install a new disk drive, and instruct the controller to “rebuild” the data on the new drive, all without interrupting system operations. Once the rebuild is complete, the controller will be brought back into a fault tolerant state. Logical Drive States The state of a logical (system) drive can be either ONLINE, CRITICAL, or OFFLINE.
Logical Drives See “System Drives.” LVD – Low Voltage Differential Low Voltage Differential is a form of SCSI signalling that was introduced with Ultra2 SCSI. Low Voltage Differential allows cable lengths of up to 12 meters (approximately 39 feet) with up to 15 devices. The devices need to be Ultra2 SCSI LVD devices in order to take advantage of the LVD signalling. LVD uses data high and data low signal lines to increase transmission distances over those of single-ended (conventional SCSI signalling).
Glossary RAID RAID stands for Redundant Array of Independent Disks. The DAC960 controllers implement this technology to connect up to 15 SCSI devices per channel. Several different forms of RAID implementation have been defined. Each form is usually referred to as a “RAID level.” All the RAID levels supported by DAC960 Series controllers are shown below. The appropriate RAID level for a system is selected by the system manager or integrator.
Level 10. Combines RAID 0 striping and RAID 1 mirroring spanned across multiple drive groups (super drive group). This level provides redundancy through mirroring. Level 30. Data is “striped” across multiple drive groups (super drive group). Maintains parity information which can be used for data recovery. Level 50. Data is “striped” across multiple drive groups (super drive group). For data redundancy, drives are encoded with rotated XOR redundancy.
Glossary SCSI Drive A disk drive equipped with a SCSI interface (sometimes referred to as a SCSI Disk). Each disk drive will be assigned a SCSI address (or SCSI ID), which is a number from 0 to 7 (0 to 15 under wide or Ultra SCSI). The SCSI address uniquely identifies the drive on the SCSI bus or channel. SCSI Drive States Refers to a SCSI drive’s current operational status. At any given time, a SCSI drive can be in one of five states: READY, ONLINE, STANDBY, DEAD, or REBUILD.
If it is present but not powered on, or If it failed to operate properly and was ‘killed’ by the controller. When the controller detects a failure on a disk, it “kills” that disk by changing its state to “dead.” A SCSI drive in a dead state does not participate in any I/O activity. No commands are issued to dead drives. Rebuild: A SCSI disk drive is in a “rebuild” state... While it is in the process of being rebuilt. During this process, data is regenerated and written to the disk drive.
Glossary high degree of fault-tolerance. The rebuild operation will be carried out by the controller automatically when a SCSI disk drive fails and both of the following conditions are true: • A “standby” SCSI disk drive of identical size is found attached to the same controller. • All of the system drives that are dependent on the failed disk are redundant system drives, e.g., RAID 1, RAID 3, RAID 5, RAID 0+1.
Striping Refers to the storing of a sequential block of incoming data across multiple SCSI drives in a group. For example, if there are 3 SCSI drives in a group, the data will be separated into blocks and block 1 of the data will be stored on SCSI drive 1, block 2 on SCSI drive 2, block 3 on SCSI drive 3, block 4 on SCSI drive 1, block 5 on SCSI drive 2 and so on. This storage method increases the disk system throughput by ensuring a balanced load among all drives.
Glossary Write-Back Cache Refers to a caching strategy whereby write operations result in a completion signal being sent to the host operating system as soon as the cache (not the disk drive) receives the data to be written. The target SCSI drive will receive the data at a more appropriate time, in order to increase controller performance. Write Through Cache Refers to a caching strategy whereby data is written to the SCSI drive before a completion status is returned to the host operating system.
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DAC960 Problem Report Customer Identification DACPRL-1 Name: ___________________________________ Company: ________________________________ Address: _________________________________ ________________________________________ ________________________________________ Country: _________________________________ Phone Number:____________________________ Fax Number:______________________________ DACPRL-1 Identification Date: Purchase Date: Model Invoice Number: Serial Number: # Chnls: Cache: Firmware Ver: BIOS Ver
Mylex Warranty - Customer Policy Thank you for purchasing this Mylex product for your computer system. In addition to this high-quality product, your purchase entitles you to the warranty coverage set forth herein. In order to provide this warranty coverage, and to indicate your acceptance of this warranty, we must have the attached Warranty Registration Card completed and returned to us within 15 days of your purchase.
Returned Merchandise Procedures If you suspect that there is a defect in the material or workmanship of this PRODUCT, you should contact the person or company from which you purchased it. That person or company may be able to solve the problem and if not, will be able to contact us for technical assistance or repair. If it is determined that the PRODUCT must be returned to MYLEX for repair or replacement, contact MYLEX’s Technical Support Department at 510-608-2400 before it is returned.
Corporate Offices ● 34551 Ardenwood Blvd., Fremont, CA 94555-3607, USA Tel: 510.796.6100 ● Sales Fax: 510.745.8016 ● www.mylex.com European Sales ● P.O. Box 513, Great Missenden, Bucks HP 16 OPG, United Kingdom Tel: 44.1344.302200 ● Fax: 44.1344.301100 ● www.mylex.
