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Momentus 4200 N-Lite
ST940110A
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Momentus 4200 N-Lite ST940110A
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© 2004 Seagate Technology LLC All rights reserved Publication number: 100354613, Rev. A October 2004 Seagate and Seagate Technology are registered trademarks of Seagate Technology LLC. SeaBOARD, SeaFONE, SeaTDD, SeaTools, and the Wave logo are either registered trade- marks or trademarks of Seagate Technology LLC. Other product names are registered trade- marks or trademarks of their owners. Seagate reserves the right to change, without notice, product offerings or specifications. No part of
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Revision status summary sheet Revision Date Sheets Affected Rev. A 10/26/2004 All.
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Contents 1.0 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2.0 Drive specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.1 Specification summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.2 Formatted capacity . . . . . . . . . . . . . . . . . .
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vi Momentus 4200 N-Lite Product Manual, Rev. A
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List of Figures Figure 1. Momentus 4200 N-Lite disc drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Figure 2. Typical 5V startup and operation current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Figure 3. Jumper settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Figure 4. Mounting dimensions—top, side and end view . . . . . . .
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viii Momentus 4200 N-Lite Product Manual, Rev. A
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1.0 Introduction ® This manual describes the functional, mechanical and interface specifications for the following Seagate Momentus™ 4200 N-Lite drive: ST940110A This drive provides the following key features: 1 4,200-RPM-class performance spindle speed and 2-Mbyte buffer combine for superior performance. Quiet operation. Fluid Dynamic Bearing (FDB) motor. High instantaneous (burst) data transfer rates (up to 100 Mbytes per second) using Ultra DMA mode 5. Giant magnetoresistive (GMR) r
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2 Momentus 4200 N-Lite Product Manual, Rev. A
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2.0 Drive specifications Unless otherwise noted, all specifications are measured under ambient conditions, at 25°C, and nominal power. For convenience, the phrases the drive and this drive are used throughout this manual to indicate ST940110A model drives. 2.1 Specification summary The specifications listed in this table are for quick reference. For details on specification measurement or defi- nition, see the appropriate section of this manual. Table 1: Specifications Drive specification S
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Table 1: Specifications (Continued) Drive specification ST940110A Average seek, write (msec typical) 14.0 Full-stroke seek (msec) 22 (typical); 26 (max) Seek power (typical) 2.4 watts Read/write power (typical) 2.4 watts Idle mode (typical) 1.2 watts Standby mode 0.36 watts (typical)** Sleep mode 0.36 watts (typical)** Voltage tolerance (including noise) 5V ± 5% Ambient temperature 5° to 55°C (operating) –40° to 65°C (nonoperating) Temperature gradient (°C per hour max) 20°C (operating) 30°C (
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2.2 Formatted capacity Model Formatted capacity Guaranteed sectors Bytes per sector ST940110A 40 Gbytes 78,140,160 512 2.3 Default logical geometry Cylinders Read/write heads Sectors per track 16,383 16 63 LBA mode When addressing these drives in LBA mode, all blocks (sectors) are consecutively numbered from 0 to n–1, where n is the number of guaranteed sectors as defined above. 2.4 Physical organization Model Read/write heads Number of discs ST940110A 2 1 Momentus 4200 N-Lite Product
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2.5 Recording and interface technology Technology Specification Interface Parallel ATA Recording method RLL 0,11 Recording density BPI (bits/inch max) 642,000 Track density TPI (tracks/inch max) 100,780 2 Areal density (Mbits/inch max) 65 Spindle speed (RPM) (± 0.2%) 4,200 class performance (spin speed actually 5,400 RPM) Internal data-transfer rate OD (Mbytes/sec max) 48.25 Sustained data transfer rate OD (Mbytes/sec max) 31.0 I/O data-transfer rate (Mbytes/sec max) 100 (Ultra DMA mode 5) Int
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However, due to the manner in which these drives are formatted, benchmark tests that include command overhead or measure logical seeks may produce results that vary from these specifications. 2.8 Time to ready Time to ready Typical Max Power-on to Ready (sec) 3.9 8.0 Standby to Ready (sec) 2.6 8.0 2.9 Power specifications The drive receives DC power (+5V) through the interface connector. 2.9.1 Power consumption Power requirements for the drives are listed in the table on page 7. Typical power m
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Table 2: DC power Power dissipation (watts) Average (watts, 25° C) 5V typical amps Seeking 2.4 0.48 Read 2.4 0.48 Write 2.4 0.48 Standby 0.36 0.07 Sleep 0.36 0.07 *During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and power to operational levels. 2.9.1.1 Typical current profile +5 Volt Current during spindle start — Typical Amperes 1.2 1.0 0.8 Amps 0.6 0.4 0.2 0.0 4.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 Seconds F
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2.9.4 Power-management modes The drive provides programmable power management to provide greater energy efficiency. In most systems, you can control power management through the system setup program. The drive features the following power-management modes: Table 3: Power management modes Power modes Heads Spindle Buffer Active (operating) Tracking Rotating Enabled Idle, performance Tracking Rotating Enabled Idle, active Floating Rotating Disabled Idle, low power Parked Rotating Disabled Standb
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2.10 Environmental specifications 2.10.1 Ambient temperature Ambient temperature is defined as the temperature of the environment immediately surrounding the drive. Actual drive case temperature should not exceed 65°C (149°F) within the operating ambient conditions. Above 1,000 feet (305 meters), the maximum temperature is derated linearly by 1°C every 1000 feet. Operating 5° to 55°C (41° to 131°F) Nonoperating –40° to 65°C (–40° to 153°F) 2.10.2 Temperature gradient Operating 20°C per hour
