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WD. WD reserves the right to change specifications at any time without notice. Western Digital, WD, the WD logo, and WD Scorpio are registered trademarks in the U.S. and other countries; and Data Lifeguard, CacheFlow, and FIT Lab are trademarks of Western Digital Technologies, Inc.
WD Scorpio ML160M Table of Contents ABLE OF ONTENTS 1. D ....................1 ESCRIPTION AND EATURES 1.1 General Description ..................................1 1.2 Product Features .................................... 1 2. S ........................3 PECIFICATIONS 2.1 Performance Specifications ................................. 3 2.2 Physical Specifications.................................. 4 2.2.1...
WD Scorpio ML160M Description and Features ESCRIPTION AND EATURES General Description WD Scorpio 2.5-inch drives offer fast performance and low power consumption, making them ideal for notebooks and other portable devices. Product Features Perpendicular Magnetic Recording (PMR) — With PMR technology the magnetization of each data bit is aligned vertically to the spinning disk, rather than longitudinally as has been the case in hard drive technology for decades.
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Description and Features WD Scorpio ML160M Dual Drive Operation — These hard drives support ATA dual drive operations. You can attach another hard drive to the WD hard drive by designating one as the master and the other as slave.
WD Scorpio ML160M Specifications PECIFICATIONS Performance Specifications Average Seek - Read 12.0 ms average - Write 13.0 ms average Track-to-Track Seek 2.0 ms average Full Stroke Seek 21 ms average Index Pulse Period 11.1 ms (nominal) Average Latency 5.5 ms...
WD Scorpio ML160M Specifications 2.2.1 Physical Dimensions English Metric Dimension Tolerance Dimension Tolerance Height 0.374 inches ±0.01 inch 9.50 mm ±0.20 mm Length 3.94 inches ±0.01 inch 100.00 mm ±0.25 mm Width 2.75 inches ±0.01 inch 69.85 mm ±0.25 mm Weight (typical) 0.22 pounds...
Specifications WD Scorpio ML160M Mechanical Specifications Figure 2-1 shows the mounting dimensions and locations of the screw holes for the drive. Figure 2-1. Mounting Dimensions RELEASED 1/16/09 (WD CONFIDENTIAL) 2679-701205-A00...
WD Scorpio ML160M Specifications Electrical Specifications 2.4.1 Current Requirements and Power Dissipation Operating Mode Mean Current Power, Average 5 VDC Spinup (max) 1000 mA 5.0W Spinup 700 mA 3.5W Read/Write 500 mA 2.5W Seek 500 mA 2.5W POWER MANAGEMENT COMMANDS...
Specifications WD Scorpio ML160M 2.4.2 Input Voltage Requirements The input voltage requirement for these drives is +5.0V ± 5%. 2.4.3 Ripple +5 VDC Maximum 100 mV (double amplitude) Frequency 0-30 MHz Environmental Specifications 2.5.1 Shock and Vibration Table 2-1. Shock and Vibration...
WD Scorpio ML160M Specifications 2.5.2 Temperature and Humidity Temperature & Humidity Operating ambient temperature 0°C to 60°C (32°F to 140°F) Max base casting temperature 60°C (140°F) Humidity 8-90% RH non-condensing 29.4°C (maximum wet bulb) Thermal Gradient 20°C/hour (maximum) Humidity Gradient...
Specifications WD Scorpio ML160M 2.5.4 Cooling If forced air cooling is required, the drive must be positioned to receive airflow from one or more fans as indicated in Figure 2-4. Figure 2-4. Forced Airflow Direction 2.5.5 Atmospheric Pressure Altitude Operating...
WD Scorpio ML160M Specifications Interface Connector Pin Assignments The WD Scorpio interfaces with the host I/O bus via the 44-pin connector (J2) illustrated in Figure 2-5. Table 2-2 identifies the pin numbers of the J2 connector and the corresponding signal names and signal functions.
Specifications WD Scorpio ML160M PDIAG- Passed Diagnostics Output from slave drive when it has passed its diagnostics. Input to master drive. 35, 33, DA0-DA2 Host Address Bus A0, A1, and A2 address I/O ports 0 through 7. CS0- Host Chip Select 0 The host asserts HCS0- to address and communicate with the WD Scorpio drive on the I/O channel.
WD Scorpio ML160M Product Features RODUCT EATURES Perpendicular Magnetic Recording (PMR) Reduced Power Spinup (RPS) Ramp Load/Unload (LUL) System-on-Chip (SOC) S.M.A.R.T. Command Transport (SCT) Reliability Features Set—Data Lifeguard™ Fluid Dynamic Bearings (FDB) CacheFlow™ Dual Drive Option Power Management High-Speed Data Transfer Support Self-Monitoring, Analysis, and Reporting Technology (S.M.A.R.T.)
Product Features WD Scorpio ML160M To address this requirement, WD has developed Reduced Power Spinup (RPS) mode. RPS-enabled drives use minimal power consumption during spin up, allowing a greater range of compatibility with various systems and cables in the marketplace.
WD Scorpio ML160M Product Features S.M.A.R.T. Command Transport (SCT) The SCT Command Transport feature set provides a method for a host to send commands and data to a device and for a device to send data and status to a host using log pages.
Product Features WD Scorpio ML160M Reliability Features Set 3.6.1 Data Lifeguard™ Representing WD's ongoing commitment to data protection, Data Lifeguard includes features that enhance the drive’s ability to prevent data loss. Data Lifeguard data protection utilities include thermal management, an environmental protection system, and embedded error detection and repair features that automatically detect, isolate, and repair problem areas that may develop over the extended use of the hard drive.
WD Scorpio ML160M Product Features 3.6.3 Internal Environmental Protection System This system protects the inside environment of the drive from contamination. System features include: Filtration System to ensure fast clean-up times Directed airflow to maximize mechanical cooling Increase casting surface area to maximize cooling...
Product Features WD Scorpio ML160M Defects managed at the factory are sector slipped. Grown defects that can occur in the field are mapped out by relocation to spare sectors on the inner cylinders of the drive. 3.6.9 Automatic Defect Retirement The automatic defect retirement feature automatically maps out defective sectors while reading or writing.
WD Scorpio ML160M Product Features the number of host commands that require actual media access thereby improving overall drive performance. Typical applications perform a variety of access patterns, such as random, sequential, and repetitive. CacheFlow is designed to dynamically adapt to the changes in access patterns that occur during the course of application execution.
Product Features WD Scorpio ML160M inactivity timer expires. The Standby Immediate command causes the drive to spin down and enter a low-power mode. Subsequent disk access commands would cause the drive to spin up and execute the new command. To avoid excessive wear on the drive due to the starting and stopping of the HDA, set the host’s disk inactivity timer to no shorter than ten minutes.
WD Scorpio ML160M Product Features 3.13.1 Master and User Passwords The manufacturer/dealer can set a master password using the Security Set Password command, without enabling the device lock function. The user password should be given or changed by a system user.
AT Command Set WD Scorpio ML160M AT C OMMAND Host Interface Commands 4.1.1 ATA-7/ATA-8 Commands Table 4-1 lists the hexadecimal codes specific to each ATA-7/ATA-8 command supported by these hard drives. Refer to the D1699 ATA8-ACS specification for full details on each command.
WD Scorpio ML160M AT Command Set COMMAND HEX OPCODE SLEEP STANDBY STANDBY IMMEDIATE WRITE BUFFER WRITE DMA WRITE DMA EXT WRITE LOG EXT WRITE MULTIPLE WRITE MULTIPLE EXT WRITE SECTOR(S) WRITE SECTOR(S) EXT 4.1.2 Obsolete Commands Table 4-2 lists the hexadecimal codes specific to each obsolete command supported by these hard drives.
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AT Command Set WD Scorpio ML160M BYTE VALUE DESCRIPTION Offline data collection status 0Xh OL disabled 8Xh OL enabled X0h scan not run X2h scan complete X4h scan suspended X5h scan aborted Self-Test execution status byte. The previous self-test routine completed without error or no...
WD Scorpio ML160M AT Command Set 4.2.2 Supported Attributes The drive supports the following attributes. Attribute Attribute ID Number Pre-Failure/Advisory Bit (Status Flags bit 0) Read Error Rate Pre-Failure Spin-up Time Pre-Failure Start/Stop Count Advisory Re-allocated Sector Count Pre-Failure Seek Error Rate...
AT Command Set WD Scorpio ML160M 4.2.3 Read Log Sector There are several logs that can be read with the S.M.A.R.T. Read Log Sector sub-command. The LBA Low Register indicates the log sector to be returned. Table 4-4. Defined Error Logging Sectors...
WD Scorpio ML160M AT Command Set Identify Device (ECh) The Identify Device command transfers 512 bytes of data that specify the drive’s parameters. Table 4-5 lists the parameters read by the host. Table 4-5. Identify Device Command WORD FIELD DESCRIPTION...
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AT Command Set WD Scorpio ML160M WORD FIELD DESCRIPTION VALUE Additional Words Valid Bit 15-8: Reserved for e06144 Bit 7-3: Reserved Bit 2: 1 = the fields reported in word 88 are valid 0007h 0 = the fields reported in word 88 are not valid...
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WD Scorpio ML160M AT Command Set WORD FIELD DESCRIPTION VALUE Command Set Supported Bit 15: Obsolete Bit 14: If set, NOP command supported Bit 13: If set, Read Buffer command supported Bit 12: If set, Write buffer command supported Bit 11: Obsolete...
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AT Command Set WD Scorpio ML160M WORD FIELD DESCRIPTION VALUE Command Set / Feature Enabled Bit 15: Obsolete Bit 14: If set, NOP command supported Bit 13: If set, READ BUFFER command supported Bit 12: If set, WRITE BUFFER command supported...
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WD Scorpio ML160M AT Command Set WORD FIELD DESCRIPTION VALUE Ultra ATA Bit 14: If set, Ultra DMA Mode 6 is selected Bit 13: If set, Ultra DMA Mode 5 is selected Bit 12: If set, Ultra DMA Mode 4 is selected...
AT Command Set WD Scorpio ML160M Set Features (EFh) The Set Features command enables or disables the features listed in the following table. Do not enable Mode 3 or Mode 4 PIO if the host system does not support I/O channel ready.
WD Scorpio ML160M Installation and Setup Procedures NSTALLATION AND ETUP ROCEDURES Hard drives are precision instruments that must be handled with care to prevent damage. It is important to understand that drives are typically damaged due to electrostatic discharge (ESD), rough handling, or shock and vibration.
Installation and Setup Procedures WD Scorpio ML160M 5.1.4 Removal From Static Shielding Bag Before removing the drive from its static shielding bag: Make sure that your work station is properly grounded. Wear a properly grounded wrist strap with good skin contact.
WD Scorpio ML160M Installation and Setup Procedures 5.2.3 Grounding For best results, mount the drive with all four screws in the side grounded to the chassis (positions A, C, D, and B below). You must ground the drive with at least one mounting screw.
Installation and Setup Procedures WD Scorpio ML160M Jumper Settings The WD Scorpio drive has a jumper block (J2) located next to the 44-pin connector on the drive. You can jumper the WD Scorpio drive as either a single/master drive, slave drive, or Cable Select drive.
WD Scorpio ML160M Maintenance AINTENANCE The hard drive requires no preventative maintenance and contains no user-serviceable parts. The service and repair of WD drives can only be performed at a WD Service Center. Please contact your WD representative for warranty information and service/return procedures.
Technical Support WD Scorpio ML160M ECHNICAL UPPORT NORTH AMERICA US/Canada (Central Time) 800.ASK.4WDC Monday - Thursday 9:00 am - 7:00 pm Friday 9:00 am - 5:00 pm Saturday 8:00 am - 5:00 pm EUROPE +31.20.4467651 Central European Time (CET) Monday - Thursday...
WD Scorpio ML160M Glossary LOSSARY Annualized Failure Rate (AFR) - A method of measuring failure rates or trends for a group of units at a site. The rates are based on the monthly total number of returned field failure units divided by the total cumulative installed base and multiplied by 12 (to annualize the failure rate).
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WD Scorpio ML160M Index —I— NDEX Input Voltage Requirements, 8 Installation and Setup, 39 —A— Interleave, 3 Acoustics, 10, 12 Internal Environmental Protection System, 18 Active LED Status, 22 Activity indication, 23 —J— Actuator Type, 4 Jumper Settings, 42 Agency Approvals, 12...
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For service and literature: support.wdc.com www.westerndigital.com Western Digital 800. North America 20511 Lake Forest Drive 800.832.4778 Spanish Lake Forest, CA 92630 +800.6008.6008 Asia Pacific U.S.A. 00800.27549338 Europe (toll free where available) +31.880062100 Europe/Middle East/Africa 2679-701205-A00 Jan 2009 WD CONFIDENTIAL...