Seagate ST38421A, ST32112A, ST36421A, ST34311A manual Introduction

U4 Family Product Manual, Rev. D 1

Introduction

This manual describes the functional, mechanical and interface specifi- cations for the U4™ ST38421A, ST36421A, ST34311A and the ST32112A. These drives provide the following key features:

•Low power consumption

•Quiet operation

•10-5 msec seek time, 5-400-RPM and 256-Kbyte buffer for excellent desktop performance

•High instantaneous (burst) data-transfer rates (up to 66.6 Mbytes per second) using Ultra DMA mode 4

•300 Gs nonoperating shock

•Full-track multiple-sector transfer capability without local processor intervention

•State-of-the-art cache and on-the-fly error-correction algorithms

•MR recording heads and EPRML technology, which provide the drives with increased areal density

•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)