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2 Momentus Product Manual, Rev. D
2.0 Introduction
This manual describes the functional, mechanical and interface specifications for the following Seagate
Momentus
®
model drives:
These drives provide the following key features:
• 5400-RPM spindle speed.
• 8-MB buffer.
• Quiet operation. Fluid Dynamic Bearing (FDB) motor.
• High instantaneous (burst) data-transfer rates (up to 3.0 Gb/s).
• Perpendicular recording technology provides the drives with increased areal density.
• State-of-the-art cache and on-the-fly error-correction algorithms.
• Native Command Queuing (NCQ) with command ordering.
• Full-track multiple-sector transfer capability without local processor intervention.
• 1000 Gs nonoperating shock and 350 Gs of operating shock.
• SeaTools diagnostic software performs a drive self-test that eliminates unnecessary drive returns.
• The 3D Defense System™, which includes Drive Defense, Data Defense and Diagnostic Defense, offers the
industry’s most comprehensive protection for disc drives.
• Support for S.M.A.R.T. drive monitoring and reporting.
• Support for Read Multiple and Write Multiple commands.
4K byte/sector models
• ST9640322AS • ST9400321AS • ST9320312AS
512 byte/sector models
• ST9640320AS • ST9320310AS • ST9160316AS
• ST9500320AS • ST9250310AS •