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Silver 3.5 inch bare hard drive with exposed circuit board

Seagate

Seagate ST3400832NS 400GB 7200 RPM 8MB SATA 1.5Gb/s 3.5" internal hard drive

SKU CH-CPD0-3G644 MPN ST3400832NS

A 400 GB, 7200 RPM SATA desktop drive built for 24x7 nearline workloads

  • PackagingBare Drive
  • InterfaceSATA 1.5Gb/s
  • Capacity400GB
  • RPM7200 RPM
  • Cache8MB
  • Average Seek Time8ms
  • Built for continuous 24x7 operation with nearline-class reliability
  • 7200 RPM spindle speed delivers responsive data access
  • 8 MB cache buffers bursts for smoother throughput
  • SATA 1.5 Gb/s interface fits legacy 3.5-inch bays
  • Low-profile 1.0-inch height suits space-constrained chassis

Seagate NL35 400 GB SATA 1.5Gb/s Drive

This Seagate NL35 model ST3400832NS is a 3.5-inch internal hard drive with a 400 GB capacity. It spins at 7200 RPM and provides an 8 MB cache over a SATA 1.5Gb/s interface. The drive is supplied as a bare unit and is built to meet the requirements of continuous 24x7 storage applications.

Suited for Nearline Workloads

The drive targets nearline environments where lower failure rates than standard desktop SATA drives are required. Workload management features protect the mechanism from overwork during sustained duty cycles. Buyers who need higher capacities or faster interface speeds should consider other options. Systems limited to legacy SATA 1.5Gb/s host controllers will find this drive compatible.

SATA 1.5Gb/s Interface Decides Fit

The single specification that determines whether this is the correct part is the SATA 1.5Gb/s interface. It must match the host controller or backplane available in the target system. Average seek time is 8 ms, average write time is 9 ms and average latency is 4.16 ms. The low-profile 1.0-inch height fits standard 3.5-inch drive bays.

Highlights

  • Built for continuous 24x7 operation with nearline-class reliability
  • 7200 RPM spindle speed delivers responsive data access
  • 8 MB cache buffers bursts for smoother throughput
  • SATA 1.5 Gb/s interface fits legacy 3.5-inch bays
  • Low-profile 1.0-inch height suits space-constrained chassis

Specifications

BrandSeagate
SeriesNL35
ModelST3400832NS
PackagingBare Drive
InterfaceSATA 1.5Gb/s
Capacity400GB
RPM7200 RPM
Cache8MB
Average Seek Time8ms
Average Write Time9ms
Average Latency4.16ms
FeaturesMeets the stringent requirements of 24x7 storage applications
Nearline-class reliability
-Lower failure rates than desktop-class SATA drives in nearline workloads
Workload Management
-Protects drive from overwork by monitoring and managing temperature and activity, optimizing
reliability
Error Recovery Control
-Streamlines error recovery in server/system environments, improving system uptime
One-Step Microcode Download
-Simplifies multi-drive field upgrades
Write Same
-Simplifies system configuration by executing large writes without host interface overhead
Form Factor3.5"
Shipping weight0.63 kg
Package size150 × 102 × 25 mm

Questions about this item

How is the 3.5" SATA 1.5Gb/s drive installed in a desktop, and what step do people often miss?

Mount the drive in a 3.5" bay using four screws, connect the SATA data and power cables, then enable the SATA port in BIOS so the 400GB volume appears.

What maintenance or replacement will the ST3400832NS need during 24x7 operation?

No scheduled maintenance is required; monitor SMART attributes and replace the drive if reallocated sectors or seek errors rise above threshold.

What limit appears first when the 7200 RPM nearline drive runs sustained writes?

The 8MB cache fills quickly, so sustained throughput settles at the SATA 1.5Gb/s interface ceiling rather than the platter speed.

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