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Silver 3.5 inch internal hard drive with green and black label, exposed circuit board on underside

Seagate

Seagate IronWolf ST12000VN0008 12TB 7200 RPM 256MB SATA 3.5" internal hard drive

SKU CH-A97W-63WQ4 MPN ST12000VN0008

12 TB 3.5" SATA drive built for 24×7 NAS use with 7200 RPM, 256 MB cache and CMR recording

  • Total capacity12 TB
  • Interface typeSATA 6.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Flash memory typeHard Drive
  • Recording methodCMR
  • Rotational speed7,200 RPM
  • 12TB capacity for large NAS storage
  • 7200 RPM and 256MB cache deliver fast data access
  • CMR recording technology ensures consistent write performance
  • AgileArray enables dual-plane balancing and RAID optimization
  • IronWolf Health Management actively protects the NAS

Built for multi-bay NAS

The Seagate IronWolf ST12000VN0008 is a 12TB 3.5" internal hard drive designed for always-on network attached storage. It spins at 7200 RPM with a 256MB cache and uses conventional magnetic recording for consistent performance in RAID arrays. The drive targets users who need high-capacity, reliable bulk storage across multiple bays.

AgileArray and RV sensors for vibration tolerance

AgileArray firmware provides dual-plane balancing and RAID optimisation to reduce vibration in multi-bay enclosures. Built-in rotational vibration sensors maintain throughput when several drives operate simultaneously. The SATA 6.0Gb/s interface fits standard NAS bays and the 26.11mm height matches typical 3.5" drive trays for straightforward installation.

Replaces lower-capacity

This model steps up from smaller IronWolf units or standard desktop drives that lack vibration compensation and health monitoring. IronWolf Health Management adds prevention, intervention and recovery features to protect data during heavy workloads. The 180TB per year workload rating and 1M hours MTBF support continuous operation where consumer drives would fall short. Buyers who need more than 12TB should consider the 14TB or 16TB capacities in the same series.

How it compares

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

Price $205.99
Pricier than about 70% of the 4,938 comparable items (median $107.99).
Total capacity 12 TB
Higher than about 90% of the 2,372 comparable items (median 2 TB).
Price per TB $17.17 per TB
Cheaper than about 94% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameSeagate
Product lineIronWolf
Model nameNE-ST12000VN0008
Total capacity12 TB
Recommended useFor NAS systems
Performance
Rotational speed7,200 RPM
Storage
Flash memory typeHard Drive
Recording methodCMR
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 weight0.68 kg
Package size152 × 102 × 32 mm

Questions about this item

What practical throughput limit does the SATA 6.0Gb/s interface impose on this drive?

The SATA 6.0Gb/s interface provides a theoretical maximum of 6 Gb/s; actual sustained transfer rates will be determined by the 7200 RPM platters and 256 MB cache rather than the bus itself.

What physical clearance does the 3.5" form factor with 26.11 mm height require in a NAS bay?

The drive measures 146.99 mm long, 101.85 mm wide and 26.11 mm high, so the bay must accommodate a standard 3.5" height profile without obstruction from adjacent trays or cabling.

How is the drive installed in a multi-bay NAS, and what step is often missed?

Mount the drive using four 3.5" screw holes, connect the SATA data and power cables, then enable AgileArray in the NAS firmware so dual-plane balancing and RAID optimisation activate for multi-bay operation.

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