Seagate ST9500423AS, ST9750422AS, ST9750424AS, ST9750423ASG, ST9750420ASG, ST9640422AS Index

Page 39

Index

A

ACA 17 acoustics 5, 15 Active mode 12 Address 24 AFR 16

Agency certification 16 Altitude 13

Altitude, nonoperating 5 Altitude, operating 5 Ambient temperature 5, 13 ambient temperature 8 Annualized Failure Rate 16 Annualized Failure Rate (AFR) 5 Areal density 4, 7

ATA commands 24

ATA data-transfer modes supported 4 Australia/New Zealand Standard AS/NZS3548 1995

17

Australian Communication Authority (ACA) 17 Australian C-Tick 17

Average seek time 8 Average seek, read 4

B

bels 5 BPI 4 buffer 4, 7

Bytes per sector 6

C

cables and connectors 20 Cache 4

cache 7 capacity 6 CE mark 16 certification 16

Check Power Mode 25 chemical substances 18 China RoHS directive 18 Class B computing device 17 compatibility 16 Conducted noise 11 Conducted RF immunity 15 Configuring the drive 19 connectors 20

CSA C22.2 (950) 16 current 4

cycles 16 Cylinders 6

D

data-transfer rates 2 DC power 9

Default logical geometry 6 density 4

Device Configuration Freeze Lock 24 Device Configuration Restore 24 Device Configuration Set 24 Diagnostics 24

dimensions 21 Discs 4 dissipation 9 Download Microcode 24

E

Electrical fast transient 15 Electromagnetic compatibility 16 Electromagnetic Compatibility (EMC) 17 Electromagnetic Compatibility control Regulation 17 Electromagnetic Compatibility Directive (89/336/EEC)

16 Electromagnetic immunity 15 Electrostatic discharge 15 electrostatic discharge (ESD) 19 EN 55022, Class B 16

EN 55024 16

EN 60950 16 Environmental protection 18 Environmental specifications 13 error-correction algorithms 2 errors 5, 16

ESD 19

EU 16

European Union (EU) requirements 16

European Union Restriction of Hazardous Substanc- es 18

evice Configuration Identify 24 Execute Device Diagnostics 24

F

FCC verification 17 features 2

Federal Communications Commission 17 Flush Cache 24

Flush Cache Extended 24 Formatted capacity 6 Formatted Gbytes 4

Free Fall Protection feature 16 Freeze Lock 24

G

Gbytes 6 geometry 6

Momentus Product Manual, Rev. C

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Contents Standard models Free-fall sensor models MomentusRevision Date Sheets affected or comments Revision historyContents Momentus Product Manual, Rev. C List of Figures Page Seagate Online Support and Services Seagate Technology support servicesStandard models Free Fall Protection models IntroductionAbout the Serial ATA interface Drive specifications Specification summary tableDrive specifications for 750, 640 and 500 GB models Altitude, nonoperating Physical organization Default logical geometryLBA mode Formatted capacityPhysical characteristics Drive specificationRecording and interface technology Typical seek times ms Read Seek timeStart/stop times Typical seek timesPower specifications Typical current profile Voltage tolerance Conducted noiseIdle mode Power-management modesPower management modes Active modeEnvironmental specifications Vibration ShockOperating shock Nonoperating shockTest for Prominent Discrete Tones PDTs Drive A-weighted Sound Power Levels SWL, BAAcoustics Electromagnetic immunityAgency certification Free Fall Protection featureSafety certification ReliabilityKorean RRL Australian C-Tick N176FCC verification China Restriction of Hazardous Substances RoHS Directive Environmental protectionCorrosive environment European Union Restriction of Hazardous Substances RoHSHandling and static-discharge precautions Configuring and mounting the driveSerial ATA cables and connectors Configuring the driveDrive mounting Mounting dimensions-top, side and end viewHot-Plug compatibility Serial ATA Sata interfacePin Function Definition Serial ATA device plug connector pin definitionsSerial ATA connector pin definitions SignalCommand name Command code in hex ATA-standard commands Supported ATA commandsATA-standard security commands Command name Command code in hexWord Description Value Identify Device commandXxxxH Fffeh Description if bit is set to Bit Set Features command values Set Features command3 S.M.A.R.T. commands A.R.T. commandsCode in features register A.R.T. command Momentus Product Manual, Rev. C Index ITE TPI Momentus Product Manual, Rev. C Page Seagate Technology LLC
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ST9500428AS, ST9640422AS, ST9750423ASG, ST9750420AS, ST9750420ASG specifications

The Seagate ST9750422AS, ST9750423AS, ST9500423ASG, ST9640423ASG, and ST9500423AS are part of Seagate's popular lineup of SATA hard drives designed for consumer and enterprise applications. These drives are recognized for their reliability, performance, and advanced technologies, making them suitable for a variety of storage needs.

The ST9750422AS and ST9750423AS models are 7200 RPM drives with a storage capacity of 750 GB, while the ST9500423ASG and ST9640423ASG offer different capacities and characteristics tailored for specific uses. The ST9500423ASG typically features a 500 GB capacity, while the ST9640423ASG is often found with 640 GB of storage space. These drives support the Serial ATA interface, ensuring high-speed data transfer rates and compatibility with a broad range of host systems.

All drives in this series feature a robust 32 MB cache that enhances performance by allowing faster access to frequently used data. This cache is critical, especially for read/write operations that require rapid data retrieval, making these models well-suited for tasks ranging from simple home computing to more intensive applications such as gaming and multimedia editing.

The ST9750422AS and ST9750423AS models are built with technologies such as Advanced Format, which improves storage capacity and enhances error correction. Additionally, these drives employ Seagate's PowerBalance and PowerFin technologies, enabling efficient power management without compromising performance.

Reliability is a core characteristic of the Seagate ST9XXX series, featuring a mean time between failures (MTBF) of over a million hours, which translates to increased system uptime and reduced potential for data loss. The drives also include features such as Native Command Queuing (NCQ), which optimizes the processing of multiple read/write commands, further boosting performance during heavy workloads.

In conclusion, the Seagate ST9750422AS, ST9750423AS, ST9500423ASG, ST9640423ASG, and ST9500423AS hard drives represent a blend of speed, reliability, and advanced technology, making them an excellent choice for users looking for dependable storage solutions. Whether for a home PC or an enterprise server, these drives continue to deliver outstanding performance and value in a competitive market.
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