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Silver 3.5 inch bare SATA hard drive, model ST3320311CS

Seagate

Seagate Pipeline HD ST3320311CS 320GB 5900 RPM 8MB SATA 3.0Gb/s 3.5" internal hard drive

SKU CH-QZWJ-PBECE MPN ST3320311CS

A 320 GB 3.5" SATA drive spinning at 5900 RPM with 8 MB cache, built for 24×7 DVR use and able to handle up to 16 simultaneous HD streams

  • Total capacity320 GB
  • Interface typeSATA 3.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Rotational speed5,900 RPM
  • Cache memory8 MB
  • Optimised for DVR use with 24×7 always-on operation
  • Supports 16 simultaneous HD streams for multi-channel recording
  • Balances performance and low power consumption
  • 320 GB capacity at 5900 RPM with 8 MB cache
  • SATA 3.0 Gb/s interface for desktop integration

Pipeline HD DVR Drive

The Seagate Pipeline HD ST3320311CS is a 320GB 3.5-inch internal hard drive built for continuous video recording. It spins at 5900 RPM with an 8MB cache and connects over a SATA 3.0Gb/s interface. The drive is supplied new as a bare unit without cables or mounting hardware.

Suited for DVR expansion not OS boot

This drive targets installers and owners of consumer DVR systems that need 24×7 operation and support for up to 16 simultaneous HD streams. It is not a good choice for a primary operating-system disk or for workloads that demand faster random-access performance.

320GB capacity and 5900 RPM spindle

The 320GB capacity and 5900 RPM spindle speed are the key figures that determine whether this drive fits the recording window and throughput your DVR requires. Verify those two numbers against your device specifications before purchase.

How it compares

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

Price $43.99
Cheaper than about 83% of the 4,938 comparable items (median $107.99).
Total capacity 320 GB
Lower than about 87% of the 2,372 comparable items (median 2 TB).
Price per TB $137.47 per TB
Pricier than about 70% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameSeagate
Product linePipeline HD
Model nameST3320311CS
Total capacity320 GB
Performance
Rotational speed5,900 RPM
Storage
Cache memory8 MB
Ports & slots
Interface typeSATA 3.0Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Shipping weight0.57 kg
Package size178 × 127 × 38 mm

Questions about this item

How do I install the 3.5" SATA drive and what step is often missed?

Mount the drive in a 3.5" bay, connect the SATA data and power cables, then enable the port in BIOS so the 320GB volume appears.

What maintenance or replacement will the ST3320311CS need later?

No routine maintenance is required; replace the drive if SMART attributes report reallocated sectors or if the 5900 RPM motor develops bearing noise.

What limit appears first during sustained 24×7 DVR recording?

The 3.0Gb/s SATA interface and 8MB cache can deliver up to 16 simultaneous HD streams before throughput becomes the bottleneck.

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