About Momentus 5400 FDE.3 Sata disc drives

Seagate ST9120312AS manual About Momentus 5400 FDE.3 Sata disc drives, Security feature matrix

1.2About Momentus 5400 FDE.3 SATA disc drives

The Momentus® 5400 FDE.3 SATA drives contain DriveTrust technology providing Full Disc Encryption (FDE) using proven Advanced Encryption Standard (AES) data encryption and decryption.

You can elect to use Momentus 5400 FDE.3 SATA drives in one of two different security modes:

1.The ATA Security mode

To operate in ATA Security mode, you only need a host system and operating system that supports the existing ATA Security Command Set. The drive is shipped to operating in this mode, ready to use.

2.The DriveTrust Security mode

To enable a robust enterprise-level security and management policy, you may elect to operate in DriveTrust Security mode. To do so, you will need to use a third-party security application to manage the DriveTrust features. Please contact your system or software provider for more details.

Refer to the table below to determine which mode is best for your particular solution.

Table 1: Security feature matrix

			ATA Security mode	DriveTrust mode

	Non-FDE drive			FDE drive operating in
	without ATA Security	Non-FDE drive with	FDE drive with ATA	DriveTrust mode via
Feature	enabled	ATA Security enabled	Security enabled	third-party software

Password required to unlock	No	Yes	Yes	Yes

Full Disk Encryption	No	No	Yes	Yes

At speed encryption	No	No	Yes	Yes

Passwords stored securely	No	Yes	Yes	Yes

Quick erase	No	No	Yes	Yes

Preboot authentication	No	No	No	Yes

Master/User passwords	No	No	No	Yes

FDE drive feature list

•Automatically encrypts (and decrypts) all data on the drive

•Operations are performed with no measurable performance loss

•All user data is encrypted on write operations and decrypted on read operations

FDE benefits

•Drive-level protection of data

•Drives that are stolen, taken out of service, or re-purposed remain fully protected

•Near instantaneous disposal and re-purposing of the drive (ensures that data from previous user is not accessible by the new drive owner)

•Able to be deployed within a trusted computing environment

The drive encrypts every write operation and decrypts every read operation without user intervention. The encryption and decryption is done on the drive itself, so there is a near-zero performance impact when the drive writes and reads data. The performance-optimized encryption and decryption engine performs at the SATA interface speed.

The purpose of full disc encryption on the drive is to protect the data stored on the drive in the event that the host system is lost or stolen. This data at rest protection assures the system owner that if their system is lost or stolen, their data will not be accessible without the correct credentials.

Note. The system reauthenticates the user on powerup and when awakening from sleep mode. It is not necessary to power down to ensure that the system reauthenticates the user.

2	Momentus 5400 FDE.3 SATA Product Manual, Rev. A

ST9120312AS, ST9160312AS, ST9320322AS specifications

The Seagate ST9320322AS, ST9160312AS, and ST9120312AS are hard disk drives (HDDs) designed for reliable storage solutions in various computing environments. These drives belong to the Barracuda line, known for their high performance and robust features.

The ST9320322AS is a 320GB, 2.5-inch SATA hard drive that operates at a speed of 7200 RPM. It has a 16MB cache buffer, enhancing data access speeds and allowing for efficient multi-tasking. This drive is particularly suitable for laptops, external drives, and other applications requiring high-capacity storage paired with portability. Its low power consumption makes it an ideal choice for mobile systems, contributing to longer battery life.

On the other hand, the ST9160312AS is a 160GB version, also a 2.5-inch SATA HDD running at 7200 RPM. Like the ST9320322AS, it features a 16MB cache, which optimizes performance for everyday computing tasks. This model is often utilized in gaming consoles and entry-level laptops, offering a balance of performance and affordability. With a height of only 9.5mm, it is designed to fit in ultrathin laptops while providing ample storage space for user data, applications, and multimedia files.

The ST9120312AS further reduces storage capacity to 120GB, while maintaining the same rotational speed of 7200 RPM. This HDD is designed for users looking for reliable, cost-effective storage solutions without compromising on performance. Like its counterparts, it features a 16MB cache and operates efficiently, making it suitable for applications that require moderate data storage, such as basic computing tasks and media storage.

All three models leverage Seagate’s advanced recording technology, which enhances data integrity and reliability. They also incorporate sophisticated error recovery tools that help prevent data loss, ensuring longevity and durability under various operating conditions. These drives support the SATA interface, which provides high-speed data transfer rates, making them compatible with a wide range of computing devices.

In conclusion, the Seagate ST9320322AS, ST9160312AS, and ST9120312AS hard drives represent a strong selection for users in need of reliable, efficient, and compact storage solutions. With their combination of high performance, energy efficiency, and advanced technologies, they continue to serve a vital role in modern computing architectures.