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Silver 3.5 inch bare hard drive with green label and exposed circuit board

Seagate

Seagate IronWolf ST4000VN008 4TB 5900 RPM 64MB SATA 6.0Gb/s 3.5" internal hard drive

SKU CH-5JSA-B3YZG MPN ST4000VN008

4 TB 3.5" CMR NAS drive with 5900 RPM, 64 MB cache and AgileArray for RAID optimisation

  • Total capacity4 TB
  • Interface typeSATA 6.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Recording methodCMR
  • Rotational speed5,900 RPM
  • Built for 24×7 NAS workloads with 180 TB yearly rating
  • AgileArray firmware balances dual-plane and optimises RAID in multi-bay enclosures
  • CMR recording technology sustains consistent write performance
  • IronWolf Health Management monitors prevention, intervention and recovery
  • Rotational vibration sensors maintain speed in multi-drive NAS chassis

4 TB NAS Drive for Multi-Bay RAID

The Seagate IronWolf ST4000VN008 is a 4 TB hard drive built for network-attached storage enclosures. It uses CMR recording technology and a 5900 RPM spindle speed to deliver consistent throughput in always-on environments. The drive targets home and small-business users who need reliable capacity for shared files, backups and media libraries. Its SATA 6.0 Gb/s interface fits standard NAS bays and RAID controllers.

Thermals Noise and Power in Normal Use

AgileArray firmware provides dual-plane balancing and advanced power management to reduce vibration and heat in multi-bay chassis. Rotational Vibration sensors monitor and compensate for vibration from adjacent drives, helping maintain steady performance. The 180 TB per year workload rating and 1 million hour MTBF reflect design targets for continuous 24x7 operation. IronWolf Health Management adds preventative monitoring for early issue detection.

CMR Recording Technology Determines Fit

This drive uses conventional magnetic recording (CMR), which sustains write performance during heavy RAID rebuilds and random I/O workloads. Shingled magnetic recording drives, by contrast, can throttle under sustained writes and are not suited for parity-based arrays. Buyers who need a non-CMR drive for archival-only storage or who require a 2.5 inch form factor for laptop bays should choose a different model.

How it compares

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

Price $88.99
Cheaper than about 56% 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 $22.25 per TB
Cheaper than about 91% of the 2,365 comparable items (median $62.21 per TB).

New to this? Paying with USDT: TRC-20 or ERC-20 — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameSeagate
Product lineIronWolf
Model nameST4000VN008
Total capacity4 TB
Recommended useFor NAS systems
Performance
Rotational speed5,900 RPM
Storage
Recording methodCMR
Cache memory64 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 weight0.66 kg
Package size155 × 112 × 28 mm

Questions about this item

How do I install the ST4000VN008 in a multi-bay NAS and which step is often missed?

Mount the 3.5" drive using the 146.99mm length and 101.85mm width, connect the SATA 6.0Gb/s data and power cables, then enable the AgileArray dual-plane balancing and RV sensor features in the NAS firmware — that configuration step is the one most people skip.

What maintenance or replacement should I plan for with this 4TB IronWolf drive?

The drive is rated for a 180TB per year workload and 1M hours MTBF; monitor IronWolf Health Management alerts and expect to replace the unit once cumulative writes approach the annual workload limit or the health score drops below the prevention threshold.

What limit appears first during sustained 24x7 operation on this CMR drive?

The 180TB per year workload rate is the first constraint you will hit under continuous use; exceeding it reduces the 1M hour MTBF expectation and triggers IronWolf Health Management intervention warnings.

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