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NL35 Series SATA Product Manual, Rev. B
1
1.0 Introduction
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.