Seagate 7200-RPM, 5400-RPM manual Introduction, Standard models Free Fall Protection models

2.0Introduction

This manual describes the functional, mechanical and interface specifications for the following Seagate Momentus® model drives:

Standard models	Free Fall Protection models
ST9750423AS	ST9750423ASG
ST9750422AS
ST9750420AS	ST9750420ASG
ST9640424AS
ST9640423AS	ST9640423ASG
ST9500424AS
ST9500423AS	ST9500423ASG

These drives provide the following key features:

•5400-RPM spindle speed (on ST9750423AS, ST9750423ASG, ST9640424AS, ST9640423AS & ST9640423ASG models only)

•7200-RPM spindle speed on all other models.

•16MB buffer.

•Free Fall Protection (on ST9750423ASG, ST9750420ASG, ST9640423ASG and ST9500423ASG models only)

•Quiet operation. Fluid Dynamic Bearing (FDB) motor.

•High instantaneous (burst) data-transfer rates (up to 3Gb/s).

•Perpendicular recording technology.

•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.

•Worldwide Name (WWN) capability uniquely identifies the drive.

2 Momentus Product Manual, Rev. B