Table 1:

Fluid Dynamic Bearing (FDB) motor acoustics

 

 

 

 

 

 

 

 

Acoustic mode

 

 

 

 

 

 

 

Models

 

Idle*

Quiet seek

Performance seek

 

 

 

 

 

ST3160021A

 

<2.5 bels (typ)

2.8 bels (typ)

3.4 bels (typ)

ST3160023A

 

2.7 bels (max)

3.0 bels (max)

3.7 bels (max)

ST3120022A

 

 

 

 

ST3120026A

 

 

 

 

ST380011A

 

 

 

 

ST380013A

 

 

 

 

ST360014A

 

 

 

 

 

 

 

 

 

ST340014A

 

<2.2 bels (typ)

2.5 bels (typ)

3.1 bels (typ)

 

 

2.4 bels (max)

2.7 bels (max)

3.5 bels (max)

 

 

 

 

 

*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:

 

 

Performance

Reference

Test

Description

level

standard

 

 

 

 

Electrostatic discharge

Contact, HCP, VCP: ± 4 kV; Air:

B

EN 61000-4-2: 95

 

± 8 kV

 

 

 

 

 

 

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

B

EN 61000-4-4: 95

 

external I/O

 

 

 

 

 

 

Surge immunity

± 1 kV differential, ± 2 kV com-

B

EN 61000-4-5: 95

 

mon, AC mains

 

 

 

 

 

 

Conducted RF immunity

150 kHz to 80 MHz, 3 Vrms,

A

EN 61000-4-6: 97

 

80% AM with 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

 

 

 

 

 

2.13

Reliability

 

 

 

Nonrecoverable read errors

1 per 1014 bits read, max.

Mean time between failures

600,000 power-on hours (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)

 

 

Service Life

5 Years

 

 

Preventive maintenance

None required

 

 

 

Barracuda 7200.7 Product Manual, Rev. E

13

Page 22 Page 24
Page 23
Image 23
Seagate ST380011A, 7200.7 Plus, ST3120022A Electromagnetic immunity, Reliability, Fluid Dynamic Bearing FDB motor acoustics
Page 22 Page 24

ST360014A, 7200.7 Plus, ST3120026A, ST3120022A, ST380011A specifications

The Seagate ST380011A, ST3160021A, ST340014A, ST3120026A, and ST380013A are notable hard disk drives from Seagate’s extensive lineup, each designed for reliability and performance in various computing environments. With a blend of technologies and specifications, these drives cater to a variety of storage needs.

Starting with the ST380011A, this model features an 80 GB capacity and operates at a rotational speed of 7200 RPM. It utilizes the ATA-100 interface, ensuring efficient data transfer rates. The drive incorporates an advanced error correction technology and is designed for a low-latency performance, making it suitable for desktop applications and personal computing.

Next, the ST3160021A offers increased storage with a 160 GB capacity, also running at 7200 RPM and using the ATA-100 interface. Its additional storage capabilities make it ideal for users needing more space for multimedia files and software. The drive is equipped with a 2 MB cache, enhancing its read and write speeds, which is advantageous for intensive tasks such as gaming or video editing.

Moving on to the ST340014A, this model raises the bar with a 400 GB capacity while still maintaining the 7200 RPM speed. The drive employs a Serial ATA (SATA) interface, which facilitates quicker data transfer compared to its predecessors. The ST340014A’s large cache size of 8 MB provides better performance, especially during multitasking scenarios. This model is particularly well-suited for more demanding computing environments where larger data storage is crucial.

The ST3120026A is another key player in this lineup, featuring a 120 GB capacity and also utilizing the SATA interface. With up to 7200 RPM operational speed, this drive excels at providing quick access to data. Its reliability and performance make it an excellent choice for both personal and professional use.

Lastly, the ST380013A delivers an 80 GB capacity similar to the ST380011A but offers enhancements in data access speeds due to updated firmware features. This model is tailored for home and small office environments, where efficient data retrieval is essential.

In summary, these Seagate hard disk drives represent a mix of capacities and performance features, catering to a variety of user needs. With advancements in interface technologies, rotational speed, and data caching, they continue to underscore Seagate's position as a leader in the storage solutions market. Whether for basic computing or more intensive applications, these drives provide reliable options.
Top Page Image Contents