Specifications

Momentus 4200.2 Product Manual, Rev. A 1
1.0 Introduction
This manual describes the functional, mechanical and interface specifications for the following Seagate
®
Momentus 4200.2 drives:
ST9120824A
ST9100825A
ST980829A
ST960812A
ST9402112A
ST930218A
These drives provide the following key features:
4,200-RPM-Class Performance spindle speed. Actual spindle speed is 5,400 RPM.
8-Mbyte buffer.
Quiet operation. Fluid Dynamic Bearing (FDB) motor.
High instantaneous (burst) data transfer rates (up to 100 Mbytes per second) using Ultra DMA mode 5.
• Giant magnetoresistive (GMR) recording heads and EPRML technology, which provide the drives with
increased areal density.
State-of-the-art cache and on-the-fly error-correction algorithms.
Full-track multiple-sector transfer capability without local processor intervention.
800 Gs nonoperating shock, and 250 Gs operating shock.
SeaTools™ diagnostic software performs a drive self-test that eliminates unnecessary drive returns.
Support for S.M.A.R.T. drive monitoring and reporting.
Support for Read Multiple and Write Multiple commands.
Support for autodetection of master/slave drives that use cable select (CSEL).
Figure 1. Momentus 4200.2 PATA disc drive