Seagate ST9750420ASG Command name Command code in hex, ATA-standard security commands

Page 31

Command name

Command code (in hex)

 

 

S.M.A.R.T. Enable/Disable Autosave

B0h/D2h

 

 

S.M.A.R.T. Enable Operations

B0h/D8h

 

 

S.M.A.R.T. Enable/Disable Auto Offline

B0h/DBh

 

 

S.M.A.R.T. Enable One Attribute Modification

B0h/E0h

 

 

S.M.A.R.T. Execute Offline

B0h/D4h

 

 

S.M.A.R.T. Free Fall Protection Host Interface

FEh

 

 

S.M.A.R.T. Read Attribute Thresholds

B0h/D1h

 

 

S.M.A.R.T. Read Data

B0h/D0h

 

 

S.M.A.R.T. Read Log Sector

B0h/D5h

 

 

S.M.A.R.T. Return Status

B0h/DAh

 

 

S.M.A.R.T. Save Attribute Values

B0h/D3h

 

 

S.M.A.R.T. Write Attribute Thresholds

B0h/D7h

 

 

S.M.A.R.T. Write Attribute Values

B0h/E1h

 

 

S.M.A.R.T. Write Log Sector

B0h/D6h

 

 

Write Buffer

E8h

 

 

Write DMA

CAh

 

 

Write DMA Extended

35h

 

 

Write DMA without Retries

CBh

 

 

Write Long with Retries

32h

 

 

Write Long without Retries

33h

 

 

Write Multiple

C5h

 

 

Write Multiple Extended

39h

 

 

Write Sectors

30h, 31h

Write Sectors Extended

34h

 

 

ATA-standard power-management commands

 

 

 

Check Power Mode

E5h

 

 

Idle

E3h

 

 

Idle Immediate

E1h

 

 

Sleep

E6h

 

 

Standby

E2h

 

 

Standby Immediate

E0h

 

 

ATA-standard security commands

 

 

 

Security Set Password

F1h

 

 

Security Unlock

F2h

 

 

Security Erase Prepare

F3h

 

 

Security Erase Unit

F4h

 

 

Security Freeze Lock

F5h

 

 

Security Disable Password

F6h

 

 

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 Specification summary table Drive specificationsDrive specifications for 750, 640 and 500 GB models Altitude, nonoperating Physical organization Default logical geometryLBA mode Formatted capacityDrive specification Physical characteristicsRecording 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 ReliabilityAustralian C-Tick N176 Korean RRLFCC 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 commandA.R.T. commands 3 S.M.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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