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Silver 3.5-inch bare hard drive with circuit board visible

Seagate

Seagate ST2000NM0135 2TB 7200 RPM 512e SAS 12Gb/s 128MB 3.5" internal hard drive

SKU CH-1WTM-W1ZCP MPN ST2000NM0135

2 TB enterprise hard drive with 7200 RPM, 128 MB cache and 12 Gb/s SAS interface for 24x7 bulk-data workloads

  • Total capacity2 TB
  • Interface type512e SAS
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Rotational speed7,200 RPM
  • Cache memory128 MB

Capacity 2TB

  • Enterprise-grade reliability for 24×7 workloads up to 550TB per year
  • High throughput with 12Gb/s SAS interface and 128MB cache
  • Maximum capacity per slot via industry-leading CMR technology
  • Consistent performance in dense multi-drive systems with dual processors
  • Low 4.16ms average latency at 7200 RPM for fast data access

2TB 7200 RPM SAS enterprise drive

This 3.5-inch internal hard drive delivers 2TB of capacity on a 12Gb/s SAS interface with a 128MB cache. It spins at 7200 RPM and uses conventional magnetic recording technology for consistent performance in 24x7 enterprise environments. The 512e sector format ensures broad compatibility with existing storage controllers and RAID configurations.

Replaces lower-capacity nearline SAS drives

The jump is worthwhile when workloads exceed 550TB per year and demand higher areal density in the same drive bay. Advanced write caching algorithms improve sustained throughput for bulk-data applications such as backup, archiving and media repositories. Dual processors and ramp-load technology maintain reliability under continuous multi-drive vibration.

Check controller and backplane compatibility

Verify that your SAS controller or HBA supports 12Gb/s speeds and 512e logical sector formatting. Confirm the 3.5-inch form factor fits the drive cage and that the 26.10mm height matches the bay specification. Ensure the system firmware recognises enterprise-class drives for optimal error recovery and SMART monitoring.

How it compares

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

Price $137.99
Pricier than about 57% of the 4,938 comparable items (median $107.99).
Total capacity 2 TB
Typical for this category: the median of 2,372 items is 2 TB.
Price per TB $69.00 per TB
Typical for this category: the median of 2,365 items is $62.21 per TB.

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Specifications

Product
Brand nameSeagate
Model nameST2000NM0135
Total capacity2 TB
Recommended useFor Enterprise Storage
Performance
Rotational speed7,200 RPM
Mean latency4.16 ms
Storage
Cache memory128 MB
Ports & slots
Interface type512e SAS
Size & build
Form factor3.5 in (8.89 cm)
Max height26.1 mm
Maximum width101.85 mm
Maximum length147 mm
Shipping weight0.61 kg
Package size165 × 131 × 38 mm

Other versions of this model

2 more in the same range

Questions about this item

What physical space does this 3.5-inch drive need to mount in a server chassis?

It fits a standard 3.5-inch bay measuring up to 147.00mm long, 101.85mm wide and 26.10mm high, matching the industry-standard form factor for enterprise drives.

How is the SAS 12Gb/s interface connected and what step is often missed?

Connect the dual-port SAS cable to the backplane or HBA; the common mistake is using a single-port cable, which disables multipath I/O and cuts throughput in half.

What component may need replacement after years of 24×7 operation?

The drive is rated for 550TB per year workloads; after extended service the mechanical assembly may reach its 2 million hour MTBF limit and require full unit replacement.

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