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Silver 3.5 inch internal hard drive with exposed circuit board, bare drive packaging

Seagate

Seagate IronWolf Pro 4TB 7200 RPM 256MB CMR SATA 3.5" internal hard drive ST4000NE001

SKU CH-8PBN-F583K MPN ST4000NE001

4 TB CMR hard drive built for 24×7 NAS use with 7200 RPM, 256 MB cache and AgileArray RAID optimisation

  • Total capacity4 TB
  • Interface typeSATA 6.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Rotational speed7,200 RPM
  • Cache memory256 MB

Capacity 4TB

  • Optimised for multi-bay NAS with AgileArray balancing
  • Consistent 24×7 performance from all-CMR recording technology
  • High workload tolerance rated at 300 TB per year
  • IronWolf Health Management monitors and protects drive health
  • 256 MB cache and 7200 RPM for fast data access

4 TB NAS Drive with AgileArray

The Seagate IronWolf Pro ST4000NE001 is a 3.5-inch internal hard drive built for 24×7 operation in multi-bay NAS enclosures. It uses conventional magnetic recording and spins at 7200 RPM with a 256 MB cache on a SATA 6.0 Gb/s interface. AgileArray firmware adds dual-plane balancing, time-limited error recovery and rotational vibration sensors to sustain RAID performance.

Suits multi-bay NAS; not for single-drive desktops

This drive targets business and home NAS systems that run continuously and benefit from rotational vibration sensing and RAID-optimised firmware. Builders assembling a single-drive workstation or a USB external enclosure will not use the AgileArray features or the 300 TB per year workload rating.

300 TB per year workload rating

The 300 TB annual workload rating is the specification that defines whether this drive matches the intended write volume. Environments that exceed this threshold should consider higher-rated enterprise drives, while lighter workloads can use standard NAS drives with lower ratings.

How it compares

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

Price $78.99
Cheaper than about 59% of the 4,938 comparable items (median $107.99).
Total capacity 4 TB
Higher than about 70% of the 2,372 comparable items (median 2 TB).
Price per TB $19.75 per TB
Cheaper than about 92% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameSeagate
Product lineIronWolf Pro
Model nameST4000NE001
Total capacity4 TB
Recommended useEnterprise NAS Hard Drives
Performance
Rotational speed7,200 RPM
Mean latency4.16 ms
Storage
Cache memory256 MB
Ports & slots
Interface typeSATA 6.0Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Max height26.11 mm
Maximum width101.85 mm
Maximum length146.99 mm
Shipping weight0.65 kg
Package size164 × 138 × 37 mm

Other versions of this model

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Questions about this item

What does the SATA 6.0Gb/s interface cap in practice?

The SATA 6.0Gb/s link sets the maximum bus throughput; sustained sequential speeds from the 7200 RPM platters typically reach the 256MB cache before the bus becomes the bottleneck.

What physical space does the 3.5" drive need to fit in a NAS bay?

The unit measures 146.99mm long, 101.85mm wide and 26.11mm high, so the bay must accommodate those maximum dimensions and the standard SATA data and power connectors at the rear.

How is the drive installed and which step do builders often miss?

Slide the 3.5" drive into the tray, secure it with the four side screws, attach both SATA data and power cables, then enable the AgileArray features in the NAS firmware so TLER and RV sensor tuning take effect.

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