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Silver 2.5 inch enterprise hard drive with green circuit board visible on underside

Seagate

Seagate ST2000NX0343 2TB SAS 12Gb/s 7200 RPM 2.5" laptop hard drive

SKU CH-QZ66-6ENKQ MPN ST2000NX0343

A 2.5-inch enterprise hard drive with a 12Gb/s SAS interface, 7200 RPM speed and 128MB cache for high-density server storage

  • Total capacity2 TB
  • Interface typeSAS 12Gb/s
  • Form factor2.5 in (6.35 cm)
  • Cache memory128 MB
  • Mean latency4.16 ms
  • Rotational speed7,200 RPM
  • High capacity in compact 2.5-inch 15mm form factor
  • SAS 12Gb/s interface enables fast data access
  • 7200 RPM with 128MB cache for responsive performance
  • 2M hours MTBF and 0.44% AFR reliability rating
  • Seagate Secure 512e encryption protects stored data

Enterprise Nearline Storage

The Seagate Exos 7E2000 ST2000NX0343 is a 2TB SAS 12Gb/s hard drive built for enterprise storage arrays. Its 2.5-inch, 15mm z-height form factor fits high-density servers and space-constrained data centres. The 512e advanced format and 128MB cache support demanding workloads requiring consistent data integrity and scalability.

Thermals and Power Efficiency

Designed for 24x7 operation, the drive targets low power consumption and low weight to maximise storage efficiency in dense racks. PowerChoice technology allows host-controlled power management during idle periods. The 7200 RPM spindle speed and 4.16ms average latency deliver steady performance without exceeding typical enterprise thermal envelopes.

Security and Reliability Features

Seagate Secure provides hardware-based encryption for data-at-rest protection. RAID Rebuild accelerates array recovery times compared to standard rebuilds. The drive carries a 2M hour MTBF rating and 0.44% AFR specification for enterprise-grade reliability. SAS interface ensures dual-port connectivity for path redundancy in mission-critical deployments.

How it compares

Measured against everything we stock in 2.5-Inch Internal Laptop HDDs, at today’s prices. Recalculated every night.

Price $351.99
Pricier than about 90% of the 645 comparable items (median $66.99).
Total capacity 2 TB
Higher than about 90% of the 419 comparable items (median 320 GB).
Price per TB $176.00 per TB
Cheaper than about 60% of the 416 comparable items (median $233.48 per TB).

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Specifications

Product
Brand nameSeagate
Model nameST2000NX0343
Total capacity2 TB
Recommended useFor Enterprise Storage
Performance
Mean latency4.16 ms
Rotational speed7,200 RPM
Storage
Cache memory128 MB
Ports & slots
Interface typeSAS 12Gb/s
Size & build
Form factor2.5 in (6.35 cm)
Max height15 mm
Maximum width70.1 mm
Maximum length100.45 mm
Shipping weight0.91 kg
Package size127 × 102 × 25 mm

Questions about this item

How do I install the ST2000NX0343 in a 2.5-inch SAS bay and what step is often missed?

Slide the 15mm-high drive into the bay, secure it with the correct screws, and attach the SAS 12Gb/s data and power connectors; the step often missed is confirming the controller supports 512e advanced format before first use.

What maintenance or replacement will this enterprise HDD need over its service life?

Rated for 2M hours MTBF and 0.44% AFR, it is designed for 24x7 operation with no scheduled maintenance; replacement is driven by SMART alerts or capacity upgrades rather than a fixed interval.

What limit appears first when the drive runs sustained workloads at 7200 RPM?

The 12Gb/s SAS interface bandwidth and 128MB cache set the sustained throughput ceiling; thermal throttling in a 15mm z-height enclosure can also reduce performance before the 2TB capacity fills.

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