Average seek time msec typical 12.5 | Seagate ST9120821A, ST98823A

Table 1:	Specifications

Drive specification		ST9120821A	ST9100824A	ST98823A	ST96812A	ST94813A	ST93811A

Average seek time (msec typical)		12.5

Average seek, read (msec typical)		12.5

Average seek, write (msec typical)		14.5

Full-stroke seek (msec)		22 (typical); 24 (max)

Seek power (typical)		2.0 watts

Read/write power (typical)		Read: 1.8 watts; Write: 1.8 watts

Idle mode (typical, low power)		0.80 watts

Standby mode		0.26 watts (typical)**

Sleep mode		0.26 watts (typical)**

Voltage tolerance		5V ± 5%
(including noise)

Ambient temperature		5° to 55°C (operating), –40° to 70°C (nonoperating)

Temperature gradient		20°C (operating)
(°C per hour max,		30°C (nonoperating)
noncondensing)

Relative humidity		5% to 90% (operating)
(noncondensing)		5% to 95% (nonoperating)

Relative humidity gradient		30% per hour max

Wet bulb temperature (°C max)		30°C (operating)
		40°C (nonoperating)

Altitude, operating		–304.8 m to 3,048 m (–1000 ft to 10,000 ft)

Altitude, nonoperating		–304.8 m to 12,192 m (–1,000 ft to 40,000 ft)
(below mean sea level, max)		–304.8 m to 12,192 m (–1,000 ft to 40,000 ft)
(below mean sea level, max)

Shock, operating		250
(Gs max at 2 msec)		250
(Gs max at 2 msec)

Shock, nonoperating		800
(Gs max at 2 msec)		800
(Gs max at 2 msec)

Shock, nonoperating		900
(Gs max at 1 msec)		900
(Gs max at 1 msec)

Shock, nonoperating		400
(Gs max at 0.5 msec)		400
(Gs max at 0.5 msec)

Vibration, operating
(max displacement may		1.0 Gs (0 to peak, 5–500 Hz)
apply below 10 hz)

Vibration, nonoperating
(max displacement may apply		5.0 Gs (0 to peak, 10–500 Hz)
below 22 hz)

Drive acoustics, sound power
(bels), 2 disc
Idle*		2.4 (typical)
Idle*		2.6 (max)
		2.6 (max)
Performance seek		2.9 (typical)
Performance seek		3.1 (max)
		3.1 (max)

Nonrecoverable read errors		1 per 1014 bits read
Annualized Failure Rate (AFR)		0.73%

Load/Unload (U/UL) cycles
25°C, 50% relative humidity		600,000 software-controlled power on/off cycles
32°C, 80% relative humidity		20,000 hard power on/off cycles
32°C, 80% relative humidity
5°C, 80% relative humidity		600,000 software-controlled power on/off cycles
5°C, 10% relative humidity		20,000 hard power on/off cycles
55°C, 16% relative humidity

4	Momentus 5400.2 PATA Product Manual, Rev. B

ST9120821A, ST98823A, ST94813A, ST9100824A, ST93811A specifications

The Seagate ST96812A, ST93811A, ST9100824A, ST94813A, and ST98823A are notable hard drive models from Seagate’s extensive lineup, each offering distinct features and technologies suitable for various computing needs. Designed predominantly for desktop and enterprise solutions, these drives showcase Seagate's commitment to performance, reliability, and innovative technology.

Starting with the ST96812A, this drive features a storage capacity of 120 GB and utilizes an ATA interface, making it a popular choice during its time for both personal computing and enterprise applications. It is engineered with a 5400 RPM spindle speed, providing a balance between performance and power efficiency. With its 2 MB cache, the ST96812A enables quick access to frequently used data, facilitating smooth operation for everyday tasks.

The ST93811A, with a capacity of 80 GB, builds on the principles of dependable storage. It also operates at 5400 RPM, ensuring consistent performance for users who rely on dependable access to their stored information. The model’s robust design includes a 2 MB buffer, enhancing data transfer speeds and improving overall system responsiveness.

Next, the ST9100824A offers a significant leap in performance with a 100 GB capacity and superior data management capabilities. This drive integrates features like Advanced Format technology, which optimizes sector size for increased storage efficiency and error correction. The spindle speed retains 7200 RPM, providing faster read and write speeds which cater well to intensive applications such as gaming or video editing.

With a focus on higher storage capacity, the ST94813A holds up to 160 GB. This model is particularly notable for its low power consumption and quiet operation, making it suitable for environments where noise reduction is crucial, such as audio production studios or home media centers. The 7200 RPM speed and enhanced cache improve overall performance for multitasking scenarios.

Lastly, the ST98823A’s 250 GB capacity positions it as a higher-end option within this series. Featuring a spindle speed of 7200 RPM and a considerable cache size, it excels in handling larger files and complex applications. This model is geared towards users seeking a fusion of speed and ample storage for applications ranging from database management to creative production.

In summary, the Seagate ST96812A, ST93811A, ST9100824A, ST94813A, and ST98823A hard drives collectively illustrate Seagate's dedication to providing various storage solutions characterized by performance, efficiency, and technological advancement tailored to meet diverse user demands.

Seagate ST9120821A, ST98823A, ST96812A, ST94813A, ST93811A manual Average seek time msec typical 12.5

Models: ST9120821A ST98823A ST94813A ST9100824A ST93811A ST96812A

Specifications

Average seek time (msec typical)

12.5

Momentus 5400.2 PATA Product Manual, Rev. B

ST9120821A, ST98823A, ST94813A, ST9100824A, ST93811A specifications