Seagate ST9750423ASG, ST9750422AS, ST9750424AS, ST9750420ASG, ST9640422AS Supported ATA commands

Page 30

5.3Supported ATA commands

The following table lists Serial ATA standard commands that the drive supports. For a detailed description of the ATA commands, refer to the Serial ATA: High Speed Serialized AT Attachment specification. See “S.M.A.R.T. commands” on page 31.for details and subcommands used in the S.M.A.R.T. implementation.

Command name

Command code (in hex)

 

 

 

 

ATA-standard commands

 

 

 

 

 

Device Configuration Restore

B1h/C0h

 

 

 

 

Device Configuration Freeze Lock

B1h/C1h

 

 

 

 

Device Configuration Identify

B1h/C2h

 

 

 

 

Device Configuration Set

B1h/C3h

 

 

 

 

Download Microcode

92h

 

 

 

 

Execute Device Diagnostics

90h

 

 

 

 

Flush Cache

E7h

 

 

 

 

Flush Cache Extended

EAh

 

 

 

 

Identify Device

ECh

 

 

 

 

Initialize Device Parameters

91h

 

 

 

 

Read Buffer

E4h

 

 

 

 

Read DMA

C8h

 

 

 

 

Read DMA Extended

25h

 

 

 

 

Read DMA without Retries

C9h

 

 

 

 

Read Long with Retries

22h

 

 

 

 

Read Long without Retries

23h

 

 

 

 

Read Multiple

C4h

 

 

 

 

Read Multiple Extended

29h

 

 

 

 

Read Native Max Address

F8h

 

 

 

 

Read Native Max Address Extended

27h

 

 

 

 

Read Sectors

20h

 

 

 

 

Read Sectors Extended

24h

 

 

 

 

Read Sectors without Retries

21h

 

 

 

 

Read Verify Sectors

40h

 

 

 

 

Read Verify Sectors Extended

42h

 

 

 

 

Read Verify Sectors without Retries

41h

 

 

 

 

Seek

70h

 

 

 

 

Set Features

EFh

 

 

 

 

Set Max Address

F9h

 

 

 

 

Note: Individual Set Max commands are identi-

Address:

00H

fied by the value placed in the Set Max Fea-

Password:

01H

tures register as defined to the right.

Lock:

02H

 

Unlock:

03H

 

Freeze Lock:

04H

Set Multiple Mode

C6h

 

 

 

 

S.M.A.R.T. Disable Operations

B0h/D9h

 

 

 

 

24

Momentus Product Manual, Rev. C

Page 29 Page 31
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Page 29 Page 31
Contents Momentus Standard models Free-fall sensor modelsRevision history Revision Date Sheets affected or commentsContents Momentus Product Manual, Rev. C List of Figures Page Seagate Technology support services Seagate Online Support and ServicesIntroduction Standard models Free Fall Protection modelsAbout the Serial ATA interface Drive specifications Specification summary tableDrive specifications for 750, 640 and 500 GB models Altitude, nonoperating Formatted capacity Default logical geometryLBA mode Physical organizationPhysical characteristics Drive specificationRecording and interface technology Typical seek times Seek timeStart/stop times Typical seek times ms ReadPower specifications Typical current profile Conducted noise Voltage toleranceActive mode Power-management modesPower management modes Idle modeEnvironmental specifications Nonoperating shock ShockOperating shock VibrationElectromagnetic immunity Drive A-weighted Sound Power Levels SWL, BAAcoustics Test for Prominent Discrete Tones PDTsReliability Free Fall Protection featureSafety certification Agency certificationKorean RRL Australian C-Tick N176FCC verification European Union Restriction of Hazardous Substances RoHS Environmental protectionCorrosive environment China Restriction of Hazardous Substances RoHS DirectiveConfiguring and mounting the drive Handling and static-discharge precautionsConfiguring the drive Serial ATA cables and connectorsMounting dimensions-top, side and end view Drive mountingSerial ATA Sata interface Hot-Plug compatibilitySignal Serial ATA device plug connector pin definitionsSerial ATA connector pin definitions Pin Function DefinitionSupported ATA commands Command name Command code in hex ATA-standard commandsCommand name Command code in hex ATA-standard security commandsIdentify Device command Word Description ValueXxxxH Fffeh Description if bit is set to Bit Set Features command Set Features command values3 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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