Seagate ST380013AS, ST3120827AS, ST3120026AS, ST3120022AS, ST310005N1A1ASRK, ST3160023AS Introduction

1.0Introduction

This manual describes the functional, mechanical and interface specifications for the following Seagate Barracuda® 7200.7 Serial ATA model drives:

Table 1:	Barracuda 7200.7 Serial ATA models
	OEM models		Distribution models	Distribution models
			not supporting NCQ	supporting NCQ
ST3200822AS		ST380013AS [1]	ST3200822AS	ST3160827AS
ST3160023AS [1]		ST380011AS [1]	ST3160023AS	ST3120827AS
ST3160021AS [1]		ST340111AS [1]	ST3120026AS	ST380817AS
ST3120026AS [1]		ST340014AS [1]	ST380013AS
ST3120022AS [1]

[1]OEM model that may support NCQ

These drives provide the following key features:

•7,200 RPM spindle speed

•8 Mbyte buffer (ST3200822AS, ST3160827AS, ST3160023AS, ST3120827AS, ST3120026AS, ST380817AS, ST380013AS and ST340111AS models)

•2 Mbyte buffer (ST3160021AS, ST3120022AS, ST380011AS, and ST340014AS models)

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

•Giant magnetoresistive (GMR) recording heads and EPRML technology, 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.

•Quiet operation.

•350 Gs nonoperating 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.

•Native Command Queing enabled on some models.

Barracuda 7200.7 Serial ATA Product Manual, Rev. N 1