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Silver 3.5-inch SAS hard drive with bare circuit board visible

Seagate

Seagate ST1000NM0045 1TB 7200 RPM SAS 12Gb/s 128MB 3.5" internal hard drive

SKU CH-Y9AB-XRCWS MPN ST1000NM0045

Enterprise 3.5" SAS drive with 1TB capacity, 7200 RPM and 128MB cache for 24x7 bulk-data workloads

  • Total capacity1 TB
  • Interface typeSAS 12Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Flash memory typeHard Drive
  • Rotational speed7,200 RPM

Capacity 1TB

  • Enterprise CMR technology maximises storage density per bay
  • 12Gb/s SAS interface enables fast data throughput in RAID arrays
  • 7200 RPM spindle speed delivers consistent performance for bulk workloads
  • 128MB cache with Advanced Write Caching boosts nearline efficiency
  • Engineered for 24x7 operation at 550TB per year workload rating

Enterprise capacity and workload rating

This Seagate Enterprise Capacity 3.5" hard drive provides 1TB of storage using conventional magnetic recording technology. It is designed for 24x7 operations with a workload rating of 550TB per year. The drive suits data center architects and IT professionals who need reliable bulk-data storage in replicated or RAID multi-drive servers and systems.

SAS interface and physical build

The drive connects through a SAS 12Gb/s interface and also supports SATA 6Gb/s for integration into industry-standard drive bays. Its 3.5-inch form factor measures 147.00mm long, 101.85mm wide and 26.10mm high, fitting standard enterprise chassis. A 128MB cache and 7200 RPM spindle speed support consistent performance in dense multi-drive environments.

Compatibility checks before ordering

Verify that your server or storage array has a 3.5-inch drive bay and a SAS 12Gb/s or SATA 6Gb/s controller that accepts 512n sector format. Confirm the system can supply adequate power and cooling for a drive engineered for continuous operation. Ensure your RAID or storage software supports the drive capacity and sector size for the intended array configuration.

How it compares

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

Price $85.99
Cheaper than about 57% of the 4,938 comparable items (median $107.99).
Total capacity 1 TB
Lower than about 60% of the 2,372 comparable items (median 2 TB).
Price per TB $85.99 per TB
Pricier than about 60% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameSeagate
Product lineEnterprise Capacity 3.5
Model nameST1000NM0045
Total capacity1 TB
Recommended useFor Enterprise Storage
Performance
Rotational speed7,200 RPM
Mean latency4.16 ms
Storage
Flash memory typeHard Drive
Cache memory128 MB
Ports & slots
Interface typeSAS 12Gb/s
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 size147 × 112 × 25 mm

Other versions of this model

3 more in the same range

Questions about this item

What does the SAS 12Gb/s interface cap at in practice?

The SAS 12Gb/s interface supports a maximum theoretical throughput of 12Gb/s; actual sustained transfer rates depend on the 7200 RPM rotational speed and 128MB cache.

What physical space is required to mount this 3.5-inch drive?

The drive measures 147.00mm long, 101.85mm wide and 26.10mm high, fitting standard 3.5-inch drive bays with matching screw-hole patterns.

How is the drive installed and what step is often missed?

Mount the bare drive in a 3.5-inch bay, connect both the SAS data cable and the SAS power connector, then ensure the host controller or backplane is configured for 12Gb/s SAS operation.

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