Formatted capacity, LBA mode | Seagate ST9120411AS, ST980411ASG

Table 1:	Drive specifications

		ST9320421AS	ST9250421AS	ST9200421AS	ST9160411AS	ST9120411AS	ST980411AS
Drive specification		ST9320421ASG	ST9250421ASG	ST9200423ASG	ST9160411ASG	ST9120411ASG	ST980411ASG

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

Warranty		5 years on distribution units.
		To determine the warranty for a specific drive, use a web browser to access the following web page:
		www.seagate.com/support/service/
		From this page, click on the “Verify Your Warranty” link. You will be asked to provide the drive serial num-
		ber, model number (or part number) and country of purchase. The system will display the warranty infor-
		mation for your drive.

Supports Hotplug opera-		Yes (requires COMPRESET from host after a hotplug event)
tion per Serial ATA Revision
2.6 specification

*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting.

**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.

***Typical notebooks will pull power to the drive when entering S3 and S4; while in the S3 and S4 states, drive sleep and drive standby modes will not contribute to battery power consumption.

2.2Formatted capacity

Model	Formatted capacity*	Guaranteed sectors	Bytes per sector

ST9320421AS and ST9320421ASG	320 Gbytes	625,142,448	512

ST9250421AS and ST9250421ASG	250 Gbytes	488,397,168	512

ST9200421AS and ST9200423ASG	200 Gbytes	390,721,968	512

ST9160411AS and ST9160411ASG	160 Gbytes	312,581,808	512

ST9120411AS and ST9120411ASG	120 Gbytes	234,441,648	512

ST980411AS and ST980411ASG	80 Gbytes	156,301,488	512

*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting.

2.2.1LBA mode

When addressing these drives in LBA mode, all blocks (sectors) are consecutively numbered from 0 to n–1,where n is the number of guaranteed sectors as defined above.

See Section 4.3.1, "Identify Device command" (words 60-61 and 100-103) for additional information about 48- bit addressing support of drives with capacities over 137 Gbytes.

Momentus 7200.3 SATA Product Manual, Rev. B

ST9120411AS, ST9120411ASG, ST9250421AS, ST9160411AS, ST9200423ASG specifications

Seagate has long been a prominent name in the storage industry, recognized for delivering reliable hard drives that cater to a variety of computing needs. The Seagate ST9200421AS, ST9160411ASG, ST980411ASG, ST9320421ASG, and ST9320421AS are notable hard drives that showcase the brand's commitment to performance and efficiency.

The ST9200421AS is a 2.5-inch SATA hard drive that boasts a storage capacity of 200GB. With a spindle speed of 5400 RPM, this model is optimized for low power consumption while maintaining adequate performance for everyday computing tasks. Its 8MB cache enhances data transfer rates, making it suitable for basic computing environments such as entry-level laptops.

Another model, the ST9160411ASG, also operates at a speed of 5400 RPM but offers a slightly larger storage capacity of 160GB. It incorporates advanced error correction technologies that improve data integrity and reliability. This drive is ideal for users looking to upgrade their existing storage without sacrificing battery life or performance in mobile devices.

The ST980411ASG steps up the capacity game with 160GB of storage as well but features Seagate's PowerSave technology that helps extend battery life in laptops. This is particularly beneficial for mobile users who require dependable storage while on the move. Combined with a 5400 RPM speed and 8MB cache, it balances performance with energy efficiency.

The ST9320421ASG offers a more substantial storage option of 320GB, matching the performance characteristics of its predecessors with a 5400 RPM spin rate. This drive includes features like QuietStep technology, which minimizes noise for a smoother user experience, making it excellent for quiet environments and multimedia applications.

Lastly, the ST9320421AS follows suit with similar specifications, catering to users who prioritize additional capacity alongside reliability. This model is ideal for users needing a dependable yet spacious storage solution for their laptops or compact desktops.

Overall, the Seagate ST9200421AS, ST9160411ASG, ST980411ASG, ST9320421ASG, and ST9320421AS hard drives exemplify the brand's innovation and commitment to quality. With features designed to enhance performance, efficiency, and user experience, these drives continue to be a solid choice for those seeking reliable storage solutions in various computing environments. With their varying capacities and features, users have the flexibility to select a model that best fits their storage needs while enjoying the reliability that Seagate is known for.