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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

  • PackagingBare Drive
  • InterfaceSAS 12Gb/s
  • Capacity1TB
  • NAND Flash Memory TypeHard Drive
  • RPM7200 RPM
  • Cache128MB

Options 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.

Highlights

  • 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

Specifications

BrandSeagate
SeriesEnterprise Capacity 3.5
ModelST1000NM0045
PackagingBare Drive
InterfaceSAS 12Gb/s
Capacity1TB
NAND Flash Memory TypeHard Drive
RPM7200 RPM
Cache128MB
Average Latency4.16ms
FeaturesCapacity-Optimized Enterprise Hard Drive for Bulk-Data Applications
- 1TB to 8TB*1, 3.5-inch enterprise drive with industry-leading conventional magnetic recording (CMR) technology
- Advanced Write Caching feature enables up to 100% performance improvement in random writes over last-generation drive
- 12Gb/s SAS and SATA 6Gb/s interfaces in industry-standard formats (512n, 512e and 4Kn) for easy integration into replicated and RAID multi-drive storage servers and systems
- State-of-the-art cache, on-the-fly error-correction algorithms, super parity and end-to-end SAS-based data integ
UsageFor Enterprise Storage
Form Factor3.5"
Height (maximum)26.10mm
Width (maximum)101.85mm
Length (maximum)147.00mm
Shipping weight0.61 kg
Package size147 × 112 × 25 mm

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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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