Seagate ST9500424AS, ST9750422AS Recording and interface technology, Physical characteristics

Page 13

3.5

Recording and interface technology

 

 

 

 

Interface

 

Serial ATA (SATA)

 

 

Recording method

Perpendicular

 

 

Recording density BPI (bits/in max)

1,586k

 

 

Track density TPI (tracks/in max)

341k

 

 

Areal density (Gb/in2 max)

541

Spindle speed (RPM) (± 0.2%)

5400

(ST9750423AS, ST9750423ASG, ST9640424AS, ST9640423AS

and ST9640423ASG models only)

 

 

 

Spindle speed (RPM) (± 0.2%) (all other models)

7200

 

 

Maximum Internal transfer rate (Gb/s)

1130

(ST9750423AS and ST9750423ASG models)

 

 

 

Maximum Internal transfer rate (Gb/s)

1305

(ST9750422AS, ST9750420AS, ST9750420ASG, ST9500424AS,

ST9500423AS and ST9500423ASG models)

 

 

 

Maximum Internal transfer rate (Gb/s)

950

(ST9640424AS, ST9640423AS and ST9640423ASG models)

 

 

 

I/O data-transfer rate (Gb/s max)

3.0

 

 

 

Interleave

 

1:1

 

 

Cache buffer

16MB (16,384KB)

 

 

 

3.6Physical characteristics

Drive specification

 

 

 

 

 

 

Height

(mm)

9.5 +/-0.2

 

(in)

0.370

+/-0.008

 

 

 

 

Width

(mm)

69.85

+/-0.25

 

(in)

2.750

+/-0.010

 

 

 

Length

(mm)

100.35 +0.20 / -0.25

 

(in)

3.951

+0.008 / -.010

 

 

 

 

Typical weight

 

115 g

 

all models

 

 

 

 

0.254 lb

 

 

 

 

Momentus Product Manual, Rev. C

7

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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 LBA mode Default logical geometryFormatted capacity Physical organizationDrive specification Physical characteristicsRecording and interface technology Start/stop times Seek timeTypical seek times Typical seek times ms ReadPower specifications Typical current profile Voltage tolerance Conducted noisePower management modes Power-management modesActive mode Idle modeEnvironmental specifications Operating shock ShockNonoperating shock VibrationAcoustics Drive A-weighted Sound Power Levels SWL, BAElectromagnetic immunity Test for Prominent Discrete Tones PDTsSafety certification Free Fall Protection featureReliability Agency certificationAustralian C-Tick N176 Korean RRLFCC verification Corrosive environment Environmental protectionEuropean Union Restriction of Hazardous Substances RoHS China Restriction of Hazardous Substances RoHS DirectiveHandling 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 interfaceSerial ATA connector pin definitions Serial ATA device plug connector pin definitionsSignal Pin Function DefinitionCommand 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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