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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

  • Total capacity400 GB
  • Interface typeSATA 1.5Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Rotational speed7,200 RPM
  • Cache memory8 MB
  • 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.

How it compares

Measured against everything we stock in 3.5-Inch Internal Desktop HDDs, at today’s prices. Recalculated every night.

Price $220.99
Pricier than about 72% of the 4,938 comparable items (median $107.99).
Total capacity 400 GB
Lower than about 84% of the 2,372 comparable items (median 2 TB).
Price per TB $552.48 per TB
Pricier than about 90% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameSeagate
Product lineNL35
Model nameST3400832NS
Total capacity400 GB
Performance
Rotational speed7,200 RPM
Average seek time8 ms
Mean write time9 ms
Mean latency4.16 ms
Storage
Cache memory8 MB
Ports & slots
Interface typeSATA 1.5Gb/s
Size & build
Form factor3.5 in (8.89 cm)
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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