Seagate ST3400832NS, ST3250823NS, ST3250623NS, ST3400632NS Introduction, NL35 Series Serial ATA

1.0Introduction

This manual describes the functional, mechanical and interface specifications for the following Seagate NL35 Series Serial ATA model drives:

NL35 Series Serial ATA

•ST3400832NS

•ST3400632NS

•ST3250823NS

•ST3250623NS

These drives provide the following key features:

•7,200 RPM spindle speed.

•8 Mbyte buffer on ST3400832NS and ST3250823NS models;

16 Mbyte buffer on ST3400632NS and ST3250623NS models.

•High instantaneous (burst) data-transfer rates (up to 150 Mbytes per second).

•Tunneling Magnetoresistive (TMR) recording heads.

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

•Native Command Queueing with command ordering to increase performance in demanding applications.

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

•Quiet operation.

•300 Gs nonoperating 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.

•Supports latching SATA cables and connectors.

•Supports S.M.A.R.T. Command Transport (SCT) to provide enterprise-like features in an industry-accepted transport mechanism. See Section 4.3.3.1 for additional information about SCT.

•Supports the Write Same command to allow large writes without host interface overhead.

•Supports Error Recovery Control to allow the host to put a soft time limit on read and write commands.

•One-Step Microcode Download which allows enterprise clients to download new drive code with a single download command using the host download utility.

•Workload management features to manage drive temperature and activity. This optimizes drive reliability in nearline environments with no user intervention required.

NL35 Series SATA Product Manual, Rev. B 1