Seagate ST980412ASG, ST9500420ASG, ST9320423ASG, ST9250410AS Set Features command values

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4.3.2Set Features command

This command controls the implementation of various features that the drive supports. When the drive receives this command, it sets BSY, checks the contents of the Features register, clears BSY and generates an inter- rupt. If the value in the register does not represent a feature that the drive supports, the command is aborted. Power-on default has the read look-ahead and write caching features enabled. The acceptable values for the Features register are defined as follows:

Table 8: Set Features command values

02H

Enable write cache (default).

03H

Set transfer mode (based on value in Sector Count register).

 

Sector Count register values:

 

00H

Set PIO mode to default (PIO mode 2).

 

01H

Set PIO mode to default and disable IORDY (PIO mode 2).

 

08H

PIO mode 0

 

09H

PIO mode 1

 

0AH

PIO mode 2

 

0BH

PIO mode 3

 

0CH

PIO mode 4 (default)

 

20H

Multiword DMA mode 0

 

21H

Multiword DMA mode 1

 

22H

Multiword DMA mode 2

 

40H

Ultra DMA mode 0

 

41H

Ultra DMA mode 1

 

42H

Ultra DMA mode 2

 

43H

Ultra DMA mode 3

 

44H

Ultra DMA mode 4

 

45H

Ultra DMA mode 5

 

46H

Ultra DMA mode 6

55H

Disable read look-ahead (read cache) feature.

82H

Disable write cache

AAH

Enable read look-ahead (read cache) feature (default).

F1H

Report full capacity available

Note. At power-on, or after a hardware or software reset, the default values of the features are as indi- cated above.

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Momentus 7200.4 SATA Product Manual, Rev. C

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Contents Momentus 7200.4 Sata Page Contents Momentus 7200.4 Sata Product Manual, Rev. C List of Figures Page Introduction Standard models Free Fall Protection modelsAbout the Serial ATA interface Drive specifications Specification summary tableDrive specifications Default logical geometry LBA modeFormatted capacity Physical organizationPhysical characteristics Drive specificationRecording and interface technology Seek time Start/stop timesTypical seek times Typical seek times msec ReadPower specifications Typical current profile Typical +5V only startup and operation current profileConducted noise Voltage tolerancePower-management modes Power management modesActive mode Idle modeEnvironmental specifications Acoustics Free Fall Protection feature Electromagnetic immunityReliability Radio frequency environmentsAgency certification Page Environmental protection European Union Restriction of Hazardous Substances RoHSChina Restriction of Hazardous Substances RoHS Directive Corrosive environment Configuring 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 compatibilitySerial ATA device plug connector pin definitions Serial ATA connector pin definitionsSignal Pin Function DefinitionSupported ATA commands Command name Command code in hex ATA-standard commandsCommand name Command code in hex Identify Device command ATA-standard security commandsWord Description Value XxxxH Xx7FH 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 Seagate Technology support services Seagate Online Support and ServicesIndex ITE TPI Momentus 7200.4 Sata Product Manual, Rev. C Page Seagate Technology LLC

ST903203N1A2ASRK, ST905003N1A1ASRK, ST9160412AS, ST9250410ASG, ST9160412ASG specifications

Seagate technology has long been at the forefront of data storage solutions, and its line of hard drives exemplifies the blend of reliability, performance, and storage capacity. Among these, the Seagate ST9500420AS, ST9120410ASG, ST9320423AS, ST90250N1A1ASRK, and ST980412AS stand out as quality options suitable for various computing needs.

The Seagate ST9500420AS is a 500GB 2.5-inch SATA hard drive designed primarily for laptop users. It features a rotational speed of 5400 RPM, balancing performance with energy efficiency. The adoption of Advanced Format technology enhances its sector size, allowing for improved data integrity and capacity. Additionally, the drive supports Native Command Queuing (NCQ), which can optimize the drive's performance by managing multiple commands more efficiently.

Another notable model is the ST9120410ASG, a 120GB hard drive that caters to users seeking a compact yet efficient storage solution. Primarily used in laptops and external enclosures, this drive also operates at 5400 RPM. Combining a 2.5-inch form factor with a SATA interface, it allows for swift data transfers while maintaining low power consumption, which is essential for portable devices.

The ST9320423AS is another 2.5-inch hard drive, boasting a capacity of 320GB. This drive is notable for its shock protection features, which safeguard data against physical impacts, making it ideal for mobile computing environments. Like its counterparts, it also utilizes SATA technology and operates efficiently, ensuring that users have access to reliable storage without compromising on performance.

For more specialized applications, the ST90250N1A1ASRK provides a substantial 250GB capacity in a compact form factor. Engineered for demanding environments, this drive showcases Seagate's commitment to creating robust, long-lasting products. It combines speed with durability, representing an excellent choice for systems requiring frequent read/write operations.

Finally, the ST980412AS is a 80GB variant that remains a staple for users needing reliable data storage without excessive capacity. This drive supports similar technologies as its peers, ensuring effective performance for everyday computing tasks. Its lightweight design and efficient power utilization make it suitable for both personal and professional use.

In summary, these Seagate hard drives embody a blend of advanced technologies, extensive capacities, and reliability. Whether for casual use, professional applications, or portable computing, each model offers unique features tailored to meet diverse user needs. With a history of innovation, Seagate remains a leader in the data storage sector, ensuring that users have access to high-quality solutions across the board.
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