3.10Acoustics

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.

Note. 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 3: Fluid Dynamic Bearing (FDB) motor acoustics

 

Idle*

Performance seek

 

 

 

ST33000650NS

2.8 bels (typ)

3.2 bels (typ)

ST33000651NS

3.0 bels (max)

3.4 bels (max)

ST33000652NS

 

 

 

 

 

*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.

3.11Test for Prominent Discrete Tones (PDTs)

Seagate follows the ECMA-74 standards for measurement and identification of PDTs. An exception to this process is the use of the absolute threshold of hearing. Seagate uses this threshold curve (originated in ISO 389-7) to discern tone audibility and to compensate for the inaudible components of sound prior to computation of tone ratios according to Annex D of the ECMA-74 standards.

3.12Electromagnetic 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 4:

Radio frequency environments

 

 

 

 

 

 

 

Test

 

Description

Performance level

Reference standard

 

 

 

 

 

Electrostatic

 

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

B

EN 61000-4-2: 95

discharge

 

 

 

 

Radiated RF

 

80 to 1000 MHz, 3 V/m,

A

EN 61000-4-3: 96

immunity

 

80% AM with 1 kHz sine

 

ENV 50204: 95

 

 

900 MHz, 3 V/m, 50% pulse modulation @ 200 Hz

 

 

Electrical fast

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

B

EN 61000-4-4: 95

transient

 

 

 

 

Surge immunity

± 1 kV differential, ± 2 kV common, AC mains

B

EN 61000-4-5: 95

 

 

 

 

Conducted RF

150 kHz to 80 MHz, 3 Vrms, 80% AM with 1 kHz sine

A

EN 61000-4-6: 97

immunity

 

 

 

 

Voltage dips,

 

0% open, 5 seconds

C

EN 61000-4-11: 94

interrupts

 

0% short, 5 seconds

C

 

 

 

40%, 0.10 seconds

C

 

 

 

70%, 0.01 seconds

B

 

Constellation ES.2 Serial ATA Product Manual, Rev. D

17

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Seagate ST33000651NS, SED FIPS 140-2 MODEL Acoustics, Test for Prominent Discrete Tones PDTs, Electromagnetic immunity

ST33000650NS, SED FIPS 140-2 MODEL, ST33000651NS, ST33000652NS specifications

Seagate has long been a leader in data storage solutions, and their range of hard drives, specifically the ST33000652NS, ST33000651NS, SED FIPS 140-2 model, and ST33000650NS, showcases the company’s commitment to performance, security, and reliability. These models are ideal for enterprise applications requiring robust data protection and efficient storage capabilities.

The Seagate ST33000652NS is designed for high-capacity storage, offering 3 TB of space. It utilizes a SATA 6Gb/s interface which ensures rapid data transfer rates, making it suitable for environments that demand quick access to large datasets. Its 7200 RPM spindle speed enhances performance, ensuring that read and write operations are executed swiftly.

Similarly, the ST33000651NS also provides 3 TB of storage but is slightly optimized for different workloads. Both models feature Seagate’s advanced caching technology, which enhances performance by efficiently managing data flow to and from the drive. This is crucial for applications requiring high-throughput operations, such as video streaming and database management.

Transitioning to the Seagate SED FIPS 140-2 model, this drive is particularly focused on data security. The FIPS 140-2 certification indicates that it adheres to stringent federal standards for cryptographic modules, ensuring that sensitive information remains protected. This model caters to government and enterprise clients concerned about the integrity and confidentiality of their data.

On the other hand, the ST33000650NS also features a similar capacity but is geared towards reliability and endurance. It is engineered to endure the challenges of continuous operation, accommodating enterprise environments that require 24/7 accessibility without compromising performance.

All these models come with integrated power management features that enhance energy efficiency, reducing operational costs while minimizing environmental impact. They also utilize Seagate’s innovative technologies for error recovery and data integrity, ensuring users can rely on their performance under demanding circumstances.

In summary, the Seagate ST33000652NS, ST33000651NS, SED FIPS 140-2, and ST33000650NS collectively offer a diverse range of features catered for various enterprise needs. With a strong emphasis on storage capacity, data security, and performance reliability, these drives are well-equipped to handle the intensive demands of modern digital landscapes. Whether looking for high-speed access or enhanced security features, Seagate continues to deliver trustworthy solutions for today’s data-driven world.