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Drive Specifications

2.11 Electromagnetic 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 7:

Table 7 Radio frequency environments

Test

Description

Performance

Reference

level

standard

 

 

 

 

 

 

Electrostatic discharge

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

B

EN61000-4-2: 95

 

 

 

 

Radiated RF immunity

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

A

EN61000-4-3: 96

 

80% AM with 1kHz sine

 

ENV50204: 95

 

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

 

 

 

200Hz

 

 

 

 

 

 

Electrical fast transient

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

B

EN61000-4-4: 95

 

 

 

 

Surge immunity

± 1 kV differential, ± 2 kV common,

B

EN61000-4-5: 95

 

AC mains

 

 

 

 

 

 

Conducted RF

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

A

EN61000-4-6: 97

immunity

1kHz sine

 

 

 

 

 

 

Voltage dips, interrupts

0% open, 5 seconds

C

EN61000-4-11: 94

 

0% short, 5 seconds

C

 

 

40%, 0.10 seconds

C

 

 

70%, 0.01 seconds

B

 

 

 

 

 

2.12 Reliability

The product shall achieve an Annualized Failure Rate (AFR) of 0.34% (MTBF of 0.75 million hours) when operated in an environment of ambient air temperatures of 25°C. Operation at temperatures outside the specifications in Section 2.9 may increase the product AFR (decrease MTBF). AFR and MTBF are population statistics that are not relevant to individual units.

AFR and MTBF specifications are based on the following assumptions for desktop personal computer environments:

•2400 power-on-hours per year.

•10,000 average motor start/stop cycles per year.

•Operations at nominal voltages.

•Temperatures outside the specifications in Section 2.9 may reduce the product reliability.

•Normal I/O duty cycle for desktop personal computers. Operation at excessive I/O duty cycle may degrade product reliability.

The desktop personal computer environment of power-on-hours, temperature, and I/O duty cycle affect the product AFR and MTBF. The AFR and MTBF will be degraded if used in an enterprise application

Nonrecoverable read errors

1 per 1014 bits read, max

Annualized Failure Rate (AFR)

0.34% (nominal power, 25°C ambient temperature)

 

 

Contact start-stop cycles

50,000 cycles

 

(at nominal voltage and temperature, with 60 cycles per hour and a 50% duty cycle)

Preventive maintenance

None required.

 

 

Barracuda SATA Product Manual, Rev. B

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Seagate ST3500413AS manual Electromagnetic immunity, Reliability, Test Description Performance Reference Level Standard
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ST3750525AS, ST3320413AS, ST4000DM000, ST3250312AS, ST31000524AS specifications

Seagate is a renowned name in the field of data storage, known for its innovative hard disk drives (HDDs) that cater to various needs. Among its extensive product lineup, the Seagate ST3500413AS, ST3160316AS, SGTST3000DM0011CH166, ST31000524AS, and ST3250312AS stand out due to their unique features and performance characteristics.

The Seagate ST3500413AS is a 500GB SATA drive exhibiting a 7200 RPM spin speed, which allows for quick data access and file transfers. It features a 16MB cache, enhancing performance by allowing frequently accessed data to be stored in a readily available state. This drive is particularly suitable for users with moderate storage needs, such as home offices and casual gaming.

On the other hand, the ST3160316AS offers a larger 1.5TB capacity. Like the ST3500413AS, it operates at 7200 RPM and comes equipped with a 32MB cache that boosts read/write speeds. This HDD is ideal for users who require additional space for media files, backups, or extensive applications.

The SGTST3000DM0011CH166 is part of Seagate's Barracuda series, renowned for its balance of performance and capacity. This 3TB drive operates on SATA III at 7200 RPM and features a 64MB cache, making it suitable for high-demand applications such as gaming rigs and multimedia servers. Its Storage capacities and speed allow users to store a significant amount of data without compromising performance.

The ST31000524AS is another prominent Seagate model that offers 1TB of storage with a similar 7200 RPM speed. This HDD is characterized by its reliability and efficiency, making it perfect for systems requiring robust data storage solutions. The 32MB cache further aids in data access speed, making it suitable for task-intensive applications.

Lastly, the ST3250312AS provides a 2TB capacity and mirrors the 7200 RPM spin speed found in the other models. With a 32MB cache, it is designed for home and small business use, offering a balance of performance and capacity. This HDD is particularly appealing for users needing to store large files without compromising on data retrieval times.

In summary, Seagate's lineup, including the ST3500413AS, ST3160316AS, SGTST3000DM0011CH166, ST31000524AS, and ST3250312AS, presents a range of storage solutions ideal for different user needs. From casual users to demanding applications, these drives utilize advanced technologies to ensure reliability, speed, and adequate storage capacity for a wide array of digital data.
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