Table 2:

Drive specifications summary for 500 GB and 250 GB models

 

 

 

Drive specification

ST3500320NS

ST3250310NS

Formatted Gbytes (512 bytes/sector)*

500

250

 

 

 

Guaranteed sectors

976,773,168

488,397,168

 

 

 

 

Heads

 

4

2

 

 

 

 

Discs

 

2

1

 

 

 

Bytes per sector

512

 

 

 

 

Default sectors per track

63

 

 

 

 

Default read/write heads

16

 

 

 

 

Default cylinders

16,383

 

 

 

 

Recording density, KBPI (kbits/in max)

1,090

 

 

 

 

Track density, KTPI (ktracks/in avg.)

150

 

 

 

 

Areal density, (Gbits/in2 avg)

164

 

Spindle speed (RPM)

7,200

 

 

 

 

Internal data transfer rate (Mbits/sec max)

1287

 

 

 

 

Sustained data transfer rate OD (Mbytes/sec max)

105

 

 

 

 

I/O data-transfer rate (Mbytes/sec max)

300

 

 

 

 

ATA data-transfer modes supported

PIO modes 0–4

 

 

 

Multiword DMA modes 0–2

 

 

 

Ultra DMA modes 0–6

 

 

 

 

 

Cache buffer

 

32 Mbytes

 

 

 

 

Height (mm max)

26.1 mm (1.028 inches)

 

 

 

Width (mm max)

101.6 mm (4.000 inches) +/- 0.010 inches

 

 

 

Length (mm max)

146.99 mm (5.787 inches)

 

 

 

 

 

Weight (max)

 

530 grams (1.168 lbs)

495 grams (1.091 lbs)

 

 

 

Average latency

4.16 msec

 

 

 

 

Power-on to ready (sec max)

20 sec

 

 

 

 

Standby to ready (sec max)

8 sec

 

 

 

 

Track-to-track seek time (msec typical)

0.8 read; 1.0 write

 

 

 

 

Average seek, read (msec typical)

8.5

 

 

 

 

Average seek, write (msec typical)

9.5

 

 

 

 

Startup current (typical) 12V (peak)

2.8 amps

 

 

 

 

Voltage tolerance (including noise)

5V + 10% / -7.5%

 

 

 

12V + 10% / -7.5%

 

Ambient temperature

5° to 55°C (operating)

 

 

 

–40° to 70°C (nonoperating)

 

 

 

 

Temperature gradient (°C per hour max)

20°C (operating)

 

 

 

30°C (nonoperating)

 

 

 

 

Relative humidity

5% to 95% (operating)

 

 

 

5% to 95% (nonoperating)

 

Relative humidity gradient

30% per hour max

 

 

 

 

Wet bulb temperature (°C max)

37.7 (operating)

 

 

 

40.0 (nonoperating)

 

 

 

 

Altitude, operating

–60.96 m to 3,048 m

 

 

 

(–200 ft. to 10,000+ ft.)

 

Altitude, nonoperating

–60.96 m to 12,192 m

 

(below mean sea level, max)

(–200 ft. to 40,000+ ft.)

 

 

 

 

Operational Shock (max at 2 msec)

70 Gs

 

 

 

 

Non-Operational Shock (max at 2 msec)

300 Gs

 

 

 

 

 

6

Barracuda ES.2 Serial ATA Product Manual, Rev. A

Page 11 Page 13
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Image 12
Seagate ST31000340NS, ST3250310NS, ST3750330NS, ST3500320NS manual Drive specifications summary for 500 GB and 250 GB models
Page 11 Page 13

ST3750330NS, ST31000340NS, ST3250310NS, ST3500320NS specifications

Seagate has long been a leader in the hard drive market, providing various storage solutions for personal and enterprise needs. Among its notable models are the ST3500320NS, ST3320630NS, ST3250310NS, and ST3750330NS, tailored for different applications, particularly in data center environments.

The Seagate ST3500320NS is a 500GB SATA hard drive designed for high-performance computing. One of its key features is a spindle speed of 7200 RPM, which offers quick data access times, significantly reducing latency in read and write operations. This model supports a 3Gb/s SATA interface, ensuring compatibility with a wide range of systems. Another important characteristic of the ST3500320NS is its robust error recovery mechanism, which enhances data integrity, making it suitable for applications where data precision is critical.

The ST3320630NS, on the other hand, is a 320GB variant, also featuring a 7200 RPM spindle speed. This model includes advanced power management features, allowing for reduced energy consumption without sacrificing performance. The drive's design focuses on reliability, designed to handle the demands of continuous operation in RAID configurations or as part of a network-attached storage (NAS) solution. Its dual stage actuator technology ensures more precise positioning of the read/write heads, improving overall performance and durability.

Considered an entry-level model, the ST3250310NS boasts a capacity of 250GB and shares the 7200 RPM speed common to other models. This drive is tailored for cost-effective solutions, providing a balance of price, performance, and reliability for small to medium business environments. Its resilience to shock and vibration makes it suitable for use in mobile workstations and external drives.

Lastly, the ST3750330NS features a significant 750GB capacity while maintaining the same 7200 RPM speed. It offers enhanced caching capabilities with a 32MB buffer, improving data throughput and responsiveness. Designed for high-capacity storage needs, this model is optimized for streaming applications and heavy workloads, reinforcing Seagate's commitment to delivering good performance in demanding scenarios.

All these models embody Seagate's dedication to innovation and reliability, featuring technologies such as Native Command Queuing (NCQ) and S.M.A.R.T. (Self-Monitoring, Analysis, and Reporting Technology) to monitor drive health. With years of expertise, Seagate continues to set industry standards for storage solutions, making these models ideal for a variety of professional applications.
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