Seagate ST9120821SB, ST98823SB manual Acoustics, Electromagnetic immunity, Drive level acoustics

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2.11Acoustics

Drive acoustics are measured as overall A-weighted acoustic sound power levels (no pure tones). All mea- surements are consistent with ISO document 7779. Sound power measurements are taken under essentially free-field conditions over a reflecting plane. For all tests, the drive is oriented with the cover facing upward.

For seek mode tests, the drive is placed in seek mode only. The number of seeks per second is defined by the following equation:

(Number of seeks per second = 0.4 / (average latency + average access time))

Table 4: Drive level acoustics

Idle*

Performance Seek

 

 

2.4 bels (typ)

2.9 bels (typ)

2.6 bels (max)

3.1 bels (max)

 

 

Note. *During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and power to operational levels.

2.12Electromagnetic immunity

When properly installed in a representative host system, the drive operates without errors or degradation in performance when subjected to the radio frequency (RF) environments defined in the following table:

Table 5:

Radio frequency environments

 

 

 

 

 

 

 

Test

 

Description

Performance level

Reference standard

 

 

 

 

Electrostatic discharge

Contact, HCP, VCP: ± 4 kV; Air: ± 8 kV

B

EN 61000-4-2: 95

 

 

 

 

Radiated RF immunity

80 to 1,000 MHz, 3 V/m,

A

EN 61000-4-3: 96

 

 

80% AM with 1 kHz sine

 

ENV 50204: 95

 

 

900 MHz, 3 V/m, 50% pulse modulation @

 

 

 

 

200 Hz

 

 

 

 

 

 

Electrical fast transient

± 1 kV on AC mains, ± 0.5 kV on external I/

B

EN 61000-4-4: 95

 

 

O

 

 

 

 

 

 

Surge immunity

± 1 kV differential, ± 2 kV common, AC

B

EN 61000-4-5: 95

 

 

mains

 

 

 

 

 

 

Conducted RF immunity

150 kHz to 80 MHz, 3 Vrms, 80% AM with

A

EN 61000-4-6: 97

 

 

1 kHz sine

 

 

 

 

 

 

Voltage dips, interrupts

0% open, 5 seconds

C

EN 61000-4-11: 94

 

 

0% short, 5 seconds

C

 

 

 

40%, 0.10 seconds

C

 

 

 

70%, 0.01 seconds

B

 

 

 

 

 

 

12

Momentus 5400.2 SATA Blade Server Product Manual, Rev. B

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Contents Momentus 5400.2 Sata ST9120821SB ST9100824SB ST98823SB ST96812SB ST94813SBPage Contents Momentus 5400.2 Sata Blade Server Product Manual, Rev. B List of Figures Page Introduction Momentus 5400.2 Sata disc driveAbout the Serial ATA interface Drive specifications Specification summary tableLoad/Unload U/UL cycles 25C, 50% relative humidity Formatted capacity Default logical geometryLBA mode Cylinders Read/write heads Sectors per track 16,383Physical organization Physical characteristicsDrive specification Recording and interface technologyTypical seek times Seek timeTime to ready Typical seek times msec Read WritePower specifications Deferred spinup Additional detailsEnvironmental specifications Nonoperating shock ShockOperating shock VibrationDrive level acoustics AcousticsElectromagnetic immunity Radio frequency environmentsReliability Safety certificationMeasurement type Specification Agency certificationKorean RRL Australian C-Tick N176FCC verification Environmental protection Corrosive environmentEuropean Union Restriction of Hazardous Substances RoHS Momentus 5400.2 Sata Blade Server Product Manual, Rev. B Configuring and mounting the drive Handling and static-discharge precautionsConfiguring the drive Serial ATA cables and connectorsMounting dimensions-top, side and end view Drive mountingMomentus 5400.2 Sata Blade Server Product Manual, Rev. B Serial ATA Sata interface Serial ATA connector pin definitionsSignal Segment Pin Function DefinitionPin Function Definition P10 Ground 2nd mate P11 ReservedSupported ATA commands Command name Command code in hex ATA-standard commandsCommand name Command code in hex ATA-standard security commandsMomentus 5400.2 Sata Blade Server Product Manual, Rev. B Identify Device command Word Description ValueXx07H Description if bit is set to Bit Word Bit WordSet Features command Set Features command values3 S.M.A.R.T. commands A.R.T. commandsCode in features register A.R.T. command Presales Support Seagate Technology support servicesInternet Technical SupportWarranty Service Data Recovery Services Authorized Service CentersData Recovery Services Call Center Toll-free Direct dial Index ITE Sata Momentus 5400.2 Sata Blade Server Product Manual, Rev. B Page Seagate Technology LLC

ST96812SB, ST9100824SB, ST94813SB, ST9120821SB, ST98823SB specifications

The Seagate series of hard drives, including the ST98823SB, ST9120821SB, ST94813SB, ST9100824SB, and ST96812SB, have been pivotal in the evolution of data storage solutions. Each model features specific enhancements that cater to different storage needs, while still reflecting Seagate's commitment to quality and performance.

The ST98823SB is a high-capacity hard drive designed primarily for enterprise use. One of its key features is its 7200 RPM spindle speed, which ensures fast data access and transfer rates. This drive typically supports Ultra ATA/133 interface, which enhances its data transfer capabilities. The robust design and high MTBF (Mean Time Between Failures) rating of the ST98823SB make it a reliable option for critical applications and large data storage.

Moving on to the ST9120821SB, this model emphasizes storage efficiency and reliability. With a capacity of around 120GB, it is ideal for storing operating systems and essential applications. The ST9120821SB also boasts a 7200 RPM speed, ensuring quick load times. This drive often features advanced power management technologies, reducing energy consumption while maintaining high performance, making it suitable for both desktop and server environments.

The ST94813SB is designed with a balance between performance and capacity. It typically offers a 48GB storage solution, catering to users who require speed without needing extensive space. With its SATA interface and a rotational speed of 7200 RPM, this drive supports high-performance applications while ensuring data integrity and reliability.

The ST9100824SB enhances the user experience with its 2.5-inch form factor, making it suitable for laptops and portable devices. With storage capacities around 100GB, this drive is designed to be energy-efficient, reducing the overall power consumption of mobile devices. It also utilizes advanced caching algorithms for improved performance, particularly in read operations.

Lastly, the ST96812SB stands out for its robust architecture, designed to withstand the rigorous demands of industrial applications. With a spin speed of 7200 RPM and a SATA interface, this drive offers a commendable mixture of speed and durability. It is often used in environment-sensitive applications where reliability is crucial.

Together, these Seagate models represent a diverse range of storage solutions, each tailored to meet specific consumer demands while ensuring reliable performance and impressive technology features.
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