6.4.7Acoustics

Sound power during idle mode shall be 3.6 bels typical when measured to ISO 7779 specification. Sound power while operating shall be 4.3 bels typical when measured to ISO 7779 specification.

There will not be any discrete tones more than 10 dB above the masking noise on typical drives when mea- sured according to Seagate specification 30553-001. There will not be any tones more than 24 dB above the masking noise on any drive.

6.4.8Electromagnetic susceptibility

See Section 2.1.1.1.

6.5Mechanical specifications

Refer to Figure 13 for detailed physical dimensions. See Section 8.3, “Drive mounting.”

Height:

1.028 in

26.11 mm

Width:

4.010 in

101.85 mm

Depth:

5.787 in

146.99 mm

Weight:

1.85 pounds

0.839 kilograms

 

26.11 MAX

 

 

 

 

 

 

(1.028 MAX)

2X 20.14

 

 

 

 

 

 

(2X .793)

 

 

 

 

 

 

6.35 (.250)

24.00

 

 

 

 

 

(.945)

 

 

 

 

 

 

 

 

 

 

 

 

2X 28.45

4.22 X 90 (

.166 X 90 )

 

 

 

 

0.36

 

 

 

 

(2X 1.120)

 

 

 

 

 

(

.014)

 

 

 

 

 

 

 

 

 

 

2X 70.05 (2X 2.758)

 

 

 

 

 

 

122.00 (4.803)

 

 

UNITS OF MEASURE: mm (inches)

 

 

2X 130.05 (2X 5.120)

 

 

 

 

 

 

146.99 MAX (5.787 MAX)

 

 

 

 

 

 

131.17 (5.164)

 

 

 

 

 

 

85.60 (3.370)

4.57 MIN BLIND

 

 

 

 

 

( .18 MIN BLIND)

20.14

 

 

41.15 (1.620)

 

4.22 X 90 ( .166 X 90 )

 

 

 

 

 

0.36

(.793)

 

 

2X 29.21

 

 

 

 

 

(

.014)

 

 

 

 

 

 

 

(2X 1.150)

 

 

 

 

 

1.45 (.057)

 

 

 

 

 

101.60 +/- .25

3.17 (.125)

 

 

 

 

 

(4.000 +/- .010)

 

 

 

 

 

50.80

 

 

 

 

 

 

(2.000)

 

 

 

 

 

 

 

2X 100.13

 

 

 

 

 

 

(2X 3.942)

20.68 (.814)

 

 

 

 

 

98.42

 

 

 

 

 

 

(3.875)

 

 

 

 

 

 

33.40

 

 

 

 

 

 

(1.315)

 

 

 

 

 

 

 

0.76

 

 

 

 

 

(

.030)

 

 

 

 

 

0.13

 

 

 

 

 

 

(.005)

 

36.37

 

 

 

 

0.13

 

 

 

 

3.50 +/- .38

 

(1.432)

 

 

 

(.005)

 

 

 

 

 

 

 

 

 

(.138 +/- .015)

 

 

0.99

 

 

 

 

 

 

 

 

 

 

0.25

 

(.039)

 

 

 

 

(.010)

 

0.41

 

 

 

 

 

 

(.016)

 

 

 

Figure 13. Physical dimensions

DRIVE

CENTER

LINE

36

Cheetah T10 SAS Product Manual, Rev. A

Page 42
Image 42
Seagate ST3146755SS, ST3300555SS, ST373355SS manual Mechanical specifications, Acoustics

ST3300555SS, ST3146755SS, ST373355SS specifications

The Seagate ST373355SS, ST3146755SS, and ST3300555SS represent a range of high-performance hard drives designed for enterprise applications, particularly in server environments requiring reliability, speed, and high capacity.

The ST373355SS is a 73.5 GB SCSI hard drive operating at 15,000 RPM, which ensures rapid data access and superior performance, making it ideal for transactional applications and data-intensive tasks. With its 4 MB cache, the drive leverages fast read and write speeds, enhancing overall system responsiveness. The SCSI interface, operating at 80 MB/s, allows for high-speed data transfers, making it a suitable choice for demanding environments where quick access to information is critical. Its hot-swappable feature enables maintenance without shutting down the system, maximizing uptime and productivity.

The ST3146755SS, with a capacity of 146.8 GB, builds on the performance of its predecessor while introducing improvements in data handling and reliability. Operating at the same impressive 15,000 RPM, this model also features a 16 MB cache that greatly improves data throughput and access speed. The drive is designed to reduce latency, which is crucial for applications where timing is everything. It is equipped with advanced error recovery features and Seagate’s innovative PowerTrim technology, which improves power efficiency during read and write operations. The ST3146755SS also features a higher mean time between failures (MTBF), underscoring its reliability in high-demand environments.

Lastly, the ST3300555SS offers even greater capacity with 300 GB. This drive maintains the 15,000 RPM rotation speed and benefits from a 16 MB cache, providing a balance of speed and storage capacity. Its advanced SCSI interface supports not just speed but also data integrity, ensuring consistent performance during extensive data transfers. The drive is designed to handle workloads naturally associated with enterprise servers, data warehouses, and video editing applications. Its rugged build supports continuous operation and is tested for high-temperature environments to ensure durability.

In summary, the Seagate ST373355SS, ST3146755SS, and ST3300555SS hard drives are engineered for enterprise environments, combining impressive RPM speeds, significant storage capacities, and advanced technologies to deliver reliability, performance, and efficiency for critical applications. These hard drives represent Seagate's commitment to providing solutions that meet the rigorous demands of modern data environments.