Western Digital SCSI Hard Drives WD Enterprise WDE2170 WDE4360 CCC: A9 Technical Reference Manual
Western Digital © 1997 Western Digital Corporation All Rights Reserved Information furnished by Western Digital Corporation is believed to be accurate and reliable. No license is granted by implication or otherwise under any patent or patent rights of Western Digital Corporation. Western Digital Corporation reserves the right to change specifications at any time without notice. Western Digital is a registered trademark. WD Enterprise and FIT Lab are trademarks of Western Digital Corporation.
WD Enterprise WDE2170/WDE4360 (CCC: A9) Technical Reference Manual 4079-001045 Rev.
RELEASED 04-08-97 4079-001045 Rev.
WD Enterprise WDE2170/WDE4360 Table of Contents TABLE OF CONTENTS 1. DESCRIPTION AND FEATURES ............................................................................. 1 1.1. 1.2. 1.3. General Description................................................................................................................. 1 Advanced Features .................................................................................................................. 2 Options ..........................................
Table of Contents 3.15. 3.16. 3.17. 3.18. 3.19. WD Enterprise WDE2170/WDE4360 LED Support ......................................................................................................................... 23 Option Block Functions ......................................................................................................... 24 Error Recovery Operations ....................................................................................................
WD Enterprise WDE2170/WDE4360 Table of Contents LIST OF FIGURES Figure 2-1. Figure 2-2. Figure 2-3. Figure 2-4. Figure 2-5. Figure 2-6. Figure 2-7. Figure 2-8. Figure 5-1. Figure 6-1. Figure 6-2. Figure 6-3. 50-pin Drive Dimensions .......................................................................................... 7 68-pin Drive Dimensions .......................................................................................... 8 80-pin Drive Dimensions ...........................................
Table of Contents WD Enterprise WDE2170/WDE4360 LIST OF TABLES Table 2-1. WDE2170/4360 Performance Specifications............................................................ 4 Table 2-2. WDE2170/4360 Physical Specifications................................................................... 5 Table 2-3. WDE2170/4360 Physical Dimensions ...................................................................... 6 Table 2-4. 50-pin Drive Dimensions .................................................................
WD Enterprise WDE2170/WDE4360 1. Description and Features DESCRIPTION AND FEATURES 1.1. General Description Designed to set a new direction in mass storage solutions, the WD Enterprise™ lowprofile 3.5-inch hard drives are the first in a family of 7200 RPM products. The outstanding performance, capacity, and reliability of these mass storage solutions make them the most competitive price/performance choice for workstations, servers, and multi-user systems.
Description and Features 1.2. WD Enterprise WDE2170/WDE4360 Advanced Features Product Features Formatted Capacities of 2.17 GB and 4.36 GB Low-profile 1-Inch (25.
WD Enterprise WDE2170/WDE4360 1.3. Description and Features Options Upon request, the following options are incorporated at the time of production. Data Buffer of 1 Megabyte The standard data buffer size is 512 kilobytes. You may order a 1 megabyte option. For more details, refer to the interface matrix table in Appendix A. Single-unit Shipping Pack Kit The drive is shipped in bulk packaging to provide maximum protection against damage during transit.
Specifications 2. WD Enterprise WDE2170/WDE4360 SPECIFICATIONS 2.1. Performance Specifications Table 2-1. WDE2170/4360 Performance Specifications PERFORMANCE CRITERIA WDE2170/WDE4360 SPECIFICATIONS Average Seek • Read • Write 8 ms 9.5 ms Track-to-Track Seek • Read • Write 1 ms 2.5 ms Full Stroke Seek < 18 ms Average Latency 4.17 ms Rotational Speed 7200 RPM Data Transfer Rate • Media to Buffer 81-140 Mbits/s • Buffer to Host 40 MB/s max.
WD Enterprise WDE2170/WDE4360 2.2. Specifications Physical Specifications Table 2-2.
Specifications WD Enterprise WDE2170/WDE4360 2.2.1. Physical Dimensions Table 2-3. WDE2170/4360 Physical Dimensions Physical 6 U.S. Metric Characteristic Dimension Tolerance Dimension Tolerance Height 1.00 inch ± 0.02 inch 25.4 mm ± 0.51 mm Length 5.75 inches ± 0.02 inch 146.05 mm ± 0.51 mm Width 4.00 inches ± 0.02 inch 101.6 mm ± 0.51 mm Weight WDE2170 1.1 pounds ± 0.11 lbs. 0.48 kg ± 0.05 kg Weight WDE4360 1.2 pounds ± 0.11 lbs. 0.53 kg ± 0.
WD Enterprise WDE2170/WDE4360 2.3. Specifications Mechanical Specifications Figure 2-1 through Figure 2-3 show the mounting dimensions and locations of the screw holes for the WDE2170 and WDE4360 drives. Figure 2-1. 50-pin Drive Dimensions Table 2-4. 50-pin Drive Dimensions Dimension 4079-001045 Rev. B Inches Millimeters A1 4.000 ± .020 101.60 ± 0.51 A2 3.750 ± .010 95.25 ± 0.25 A3 2.375 ± .010 60.32 ± 0.25 A4 1.750 ± .010 44.45 ± 0.25 A5 5.750 ± .020 146.05 ± 0.51 A6 .625 ± .
Specifications WD Enterprise WDE2170/WDE4360 Figure 2-2. 68-pin Drive Dimensions Table 2-5. 68-pin Drive Dimensions Dimension 8 Inches Millimeters A1 4.000 ± .020 101.60 ± 0.51 A2 3.750 ± .010 95.25 ± 0.25 A3 2.375 ± .010 60.32 ± 0.25 A4 1.750 ± .010 44.45 ± 0.25 A5 5.750 ± .020 146.05 ± 0.51 A6 .625 ± .020 15.87 ± 0.51 A7 1.638 ± .010 41.60 ± 0.25 A8 1.787 ± .010 45.39 ± 0.25 A9 4.000 ± .010 101.60 ± 0.25 A10 .250 ± .010 6.35 ± 0.25 A11 1.000 ± .020 25.40 ± 0.
WD Enterprise WDE2170/WDE4360 Specifications Figure 2-3. 80-pin Drive Dimensions Table 2-6. 80-pin Drive Dimensions Dimension 4079-001045 Rev. B Inches Millimeters A1 4.000 ± .020 101.60 ± 0.51 A2 3.750 ± .010 95.25 ± 0.25 A3 2.375 ± .010 60.32 ± 0.25 A4 1.750 ± .010 44.45 ± 0.25 A5 5.750 ± .020 146.05 ± 0.51 A6 .625 ± .020 15.87 ± 0.51 A7 1.638 ± .010 41.60 ± 0.25 A8 1.787 ± .010 45.39 ± 0.25 A9 4.000 ± .010 101.60 ± 0.25 A10 .250 ± .010 6.35 ± 0.25 A11 1.000 ± .
Specifications WD Enterprise WDE2170/WDE4360 2.3.1. Mounting The WD Enterprise drives feature side and bottom mounting holes, which allow the drive to be mounted in any orientation. See Figure 2-4 for orientation axes. The hard drive is a precision mechanical assembly. Improper mounting may distort the drive frame and impair its ability to function. For instructions on installing the drive, including drive handling and mounting, refer to the WD Enterprise Installation Guide (document number 4079-001046).
WD Enterprise WDE2170/WDE4360 2.4. Specifications Electrical Specifications 2.4.1. Current Requirements and Power Dissipation Table 2-7. WDE2170 Current Requirements and Power Dissipation Operating Mode Current Population Mean + 4 Sigma Current Population Mean Power Pop Mean + 4 Sigma Power Population Mean 12 VDC 5 VDC 4 SE/Diff. 12 VDC 5 VDC 4 SE/Diff. SE/Diff. SE/Diff. Spin-up peak DC 1.22A 635/780 mA peak DC 1.
Specifications WD Enterprise WDE2170/WDE4360 2.4.2. 12V Current Profile The following graphs show the +12V current profile for the WDE2170 and WDE4360 drives during spin-up and run. Figure 2-5. WDE2170 +12V Current Profile 1 .6 S p in u p P e a k A C C u rre n t 1 .4 S p in u p P e a k D C C u rre n t 1 .2 1 .0 C U R R E N T (A m p s) 0 .8 0 .6 0 .4 0 .2 0 0 1 2 3 4 5 6 7 T IM E (S e c o n d s) W D E2170 8 9 10 Figure 2-6. WDE4360 +12V Current Profile 1 .6 1 .4 1 .2 1 .
WD Enterprise WDE2170/WDE4360 Specifications 2.4.3. Input Voltage Requirements The input voltage requirements for the WDE2170 and WDE4360 are as follows: + 5V ± 5% and + 12V ± 5% 2.4.4. Ripple Table 2-9. Voltage Ripple Maximum +12 VDC +5 VDC Start: 400 mV (peak-to-peak) 100 mV (peak-to-peak) Run: 150 mV (peak-to-peak) Frequency 0-20 MHz 0-20 MHz 2.4.5. Bring-Up Sequence After power is applied, the following events occur as the drive becomes ready for use.
Specifications 2.5. WD Enterprise WDE2170/WDE4360 Environmental Specifications 2.5.1. Shock and Vibration All shock and vibration specifications apply to the mounting and orientation conditions described in section 2.3. Orientation axes are defined in Figure 2-4. Table 2-10. Shock and Vibration Shock Operating 10G (2 per second maximum) Non-operating 70G (3 drops per axis maximum) Non-operating Rotational Shock 10,000 rad/s2 Note: Half-sine wave of 3 ms duration without non-recoverable errors.
WD Enterprise WDE2170/WDE4360 Specifications Operating Vibration WD Enterprise drives are tested by applying a continuous swept sine excitation in each linear axis, one axis at a time. Sweep rate is one octave per minute. The drive incurs no physical damage and no hard errors while subjected to continuous vibration not exceeding the level listed in Table 2-10. Operating performance may degrade during periods of vibration application.
Specifications WD Enterprise WDE2170/WDE4360 2.5.2. Temperature and Humidity Table 2-11.
WD Enterprise WDE2170/WDE4360 Specifications 2.5.4. Atmospheric Pressure Table 2-13. Allowable Altitude Ranges Altitude Operating -1,000 feet to 10,000 feet (-300m to 3,000m) Non-operating -1,000 feet to 40,000 feet (-300m to 12,000m) 2.5.5. Acoustics Table 2-14. Sound Power Level Mode Typical Maximum Idle 4.0 A-weighted Bels 4.3 A-weighted Bels Seek 5.0 A-weighted Bels 5.3 A-weighted Bels Notes: 1. Sound power is measured in accordance with ECMA-74 and ISO 7779.
Specifications WD Enterprise WDE2170/WDE4360 Figure 2-7. Drive Baseplate Thermocouple Location 18 RELEASED 04-08-97 4079-001045 Rev.
WD Enterprise WDE2170/WDE4360 Specifications Figure 2-8. PCBA Thermocouple Locations 4079-001045 Rev.
Specifications 2.6. WD Enterprise WDE2170/WDE4360 Reliability Specifications Table 2-15.
WD Enterprise WDE2170/WDE4360 3. Advanced Product Features ADVANCED PRODUCT FEATURES 3.1. Compatibility Testing Western Digital performs extensive testing in its Functional Integrity Test Lab (FIT Lab™). By equipping the FIT Lab with multiple host systems, adapters, operating systems, and application programs, compatibility is achieved with a broad range of applications implemented on workstations, servers, multi-user, and array systems. 3.2.
Advanced Product Features 3.8. WD Enterprise WDE2170/WDE4360 Command Queuing and Reordering The drives support both tagged and untagged queuing. Tagged queuing allows the drive to receive multiple I/O processes from each initiator. Untagged queuing allows the drive to receive a maximum of one I/O process from each initiator. In order to use tagged command queuing, the initiator must set the disconnect privilege bit. This allows the drive to disconnect from the SCSI bus.
WD Enterprise WDE2170/WDE4360 Advanced Product Features 3.13. Zoned Recording The drives employ zoned recording to increase data density on the outer tracks of the drive. Zoned recording allows the adjustment of the number of sectors per track, which provides storage of more sectors on the larger, outer tracks. Formatting packs data uniformly throughout the surface of the platter by dividing the outer tracks into more sectors.
Advanced Product Features WD Enterprise WDE2170/WDE4360 3.16. Option Block Functions The firmware uses several pins on the option block to modify the drive characteristics. The definitions for the jumpers follow: SCSI ID: Four jumpers are used to identify the default SCSI ID for the drive. Disable Auto Start: Use of this jumper disables Auto Start, meaning the drive does not spin-up until a START UNIT command is issued.
WD Enterprise WDE2170/WDE4360 Advanced Product Features 3.17. Error Recovery Operations Error recovery options are set using MODE SELECT Page 1 (Read/Write Error Recovery Page) and the Write Recovery Threshold and Read Recovery Threshold fields in MODE SELECT Page 0 (WD Vendor Unique Page). The drive employs a variety of recovery actions based on the type of error that occurs. Separate recovery actions are defined for read errors, write errors, servo errors, and drive fault errors.
Advanced Product Features WD Enterprise WDE2170/WDE4360 3.19. Hot Plug/Unplug Support The conditions for hot-plugging drives into an active SCSI bus follow: The drive signal ground must be made before the SCSI bus signals. Power—both +5V and +12V—cannot be applied until the SCSI bus signals are connected. The host(s) are not actively trying to access the inserted device. The drive is not supplying TERMPWR to the SCSI bus. The drive is not supplying termination to the SCSI bus.
WD Enterprise WDE2170/WDE4360 4. SCSI Interface and Command Set SCSI INTERFACE AND COMMAND SET Refer to the Western Digital SCSI Implementation Guide (document number 4096-001116). 4079-001045 Rev.
The Option Block 5. WD Enterprise WDE2170/WDE4360 THE OPTION BLOCK The WD Enterprise drive PCBA contains an option block that controls the drive’s operation. This block is equipped with jumper pins that correspond to various options controlled by SCSI commands. Jumpers are used to enable or disable the options and modify the drive configuration. The user-configurable jumpers appear in Table 5-1. Note: Jumpers should only be changed when the drive is powered down. 5.1.
WD Enterprise WDE2170/WDE4360 5.3. The Option Block Option Block Pin Assignments The option block is used to modify the drive characteristics. The table below shows the pin numbers that correspond to each option or signal, and provides instruction for enabling and disabling these features. Refer to the WD Enterprise Installation Guide (document number 4079-001046) for option definitions. Table 5-1.
The Option Block 5.4. WD Enterprise WDE2170/WDE4360 SCSI ID Jumper Table Table 5-2.
WD Enterprise WDE2170/WDE4360 6. SCSI Connectors SCSI CONNECTORS 6.1. Power Connectors and Cables Table 6-1. 50-pin Drive Power Connector and Cable POWER CONNECTOR MATING CONNECTOR WIRE GAUGE AMP 2-in-1 1x4 PC power connector 18 AWG Table 6-2. 68-pin Drive Power Connector and Cable POWER CONNECTOR MATING CONNECTOR WIRE GAUGE Molex 3-in-1 combo (or equivalent) 1x4 PC power connector 18 AWG 6.2.
SCSI Connectors 6.3. WD Enterprise WDE2170/WDE4360 50-Pin SCSI Connector Figure 6-1. 50-Pin SCSI Connector and Power Connector Pin Numbers 49 1 50 2 54 53 52 51 DRIVE OUTLINE 32 RELEASED 04-08-97 4079-001045 Rev.
WD Enterprise WDE2170/WDE4360 SCSI Connectors Table 6-3.
SCSI Connectors 6.4. WD Enterprise WDE2170/WDE4360 68-Pin SCSI Connector Figure 6-2. 68-Pin SCSI Connector, Remote Option Connector, and Power Connector Pin Numbers 34 1 79 69 68 35 80 70 84 83 82 81 D R IV E O U T L IN E 34 RELEASED 04-08-97 4079-001045 Rev.
WD Enterprise WDE2170/WDE4360 SCSI Connectors Table 6-5.
SCSI Connectors WD Enterprise WDE2170/WDE4360 Table 6-6.
WD Enterprise WDE2170/WDE4360 SCSI Connectors Table 6-8. 80-Pin (SCA-2) SCSI Connector Pin Assignments SINGLE-ENDED SCSI CONNECTOR Pin Signal Name Number Signal Name 4079-001045 Rev.
Installation and Maintenance 7. WD Enterprise WDE2170/WDE4360 INSTALLATION AND MAINTENANCE For instructions on installing the drive, including drive handling and mounting, determining the configuration, setting the drive jumpers, and cabling procedures, refer to the WD Enterprise Installation Guide (document number 4079-001046). 7.1. Electrostatic Discharge (ESD) Protection To prevent drive damage, it is essential to keep the drive in an ESD safe environment.
WD Enterprise WDE2170/WDE4360 8. Technical Support TECHNICAL SUPPORT If you have a problem with your WD Enterprise drive, the following tips may help determine the cause of the problem. Verify that you have correctly followed the setup procedures for your system.
Glossary 9. WD Enterprise WDE2170/WDE4360 GLOSSARY Active Termination - Works to control the impedance at the end of the SCSI bus by using a voltage regulator. This reduces the susceptibility of the bus to noise, particularly when cables are long or when many devices are connected to the bus. Because it is active, regulating the power that it gets from the interface card, active termination is more stable than passive termination.
WD Enterprise WDE2170/WDE4360 Glossary Formatted Capacity - Actual capacity available to store data in a mass storage device. The formatted capacity is the gross capacity minus the capacity taken up by the overhead data required for formatting the media. Functional Integrity Testing (FIT) - Suite of tests Western Digital performs on all its drive products to ensure compatibility with different hosts, operating systems, adapters, application programs, and peripherals.
Glossary WD Enterprise WDE2170/WDE4360 Servo Burst - Provides positioning information to the actuator arm, usually positioned between sectors or at the end of a track. Single-ended SCSI - Standard electrical interface for SCSI. Single-ended means an interface with one signal line and one corresponding ground line for each SCSI signal. Soft Error - Data error that can be corrected by the error recovery process. Ultra SCSI - Provides 20 MB/s over an 8-bit bus or 40 MB/s over a 16-bit Wide SCSI bus.
WD Enterprise WDE2170/WDE4360 10. Appendix A. — Understanding the Model Number APPENDIX A. — UNDERSTANDING THE MODEL NUMBER The diagram illustrates the model number convention for WD Enterprise drives. The table illustrates the interface matrix portion of the model number. INTERFACE MATRIX Matrix Code Interface SE 01 03 05 07 08 12 16 17 23 32 4079-001045 Rev.
Index 11.
WD Enterprise WDE2170/WDE4360 —R— Read Caching, 21 Recording Method, 5 Recoverable Error, 41 Reed Solomon ECC, 22 Ripple, 13 Rotational Speed, 4 RPM, 4, 41 —S— S.M.A.R.T., 25, 41 Safety, 20 SCA-1, 41 SCSI Connector, 31 50-Pin, 32 68-Pin, 34 SCSI Connectors, 31 SCSI device, 41 SCSI Drive Connector Pin Numbers 50-Pin, 33 68-Pin, 35 SCSI ID Jumper Table, 30 SCSI Physical Interface, 31 SCSI-1, 41 SCSI-2, 41 SCSI-3, 41 Sector, 41 Seek Time, 4, 41 Servo Burst, 42 Servo Type, 5 Shock, 14 4079-001045 Rev.
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