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Rectangular silver 3.5 inch hard drive with circuit board visible

Western Digital

Western Digital WD100EFGX 10TB 7200 RPM 512MB CMR SATA 3.5" internal hard drive

SKU CH-614Z-JJH95 MPN WD100EFGX

10 TB CMR drive at 7200 RPM with 512 MB cache, built for 24×7 NAS workloads up to 180 TB per year

  • Total capacity10 TB
  • Interface typeSATA 6.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Flash memory typeHard Drive
  • Recording methodCMR
  • Rotational speed7,200 RPM

Capacity 10TB

Show 4 more
  • Built for 24×7 NAS workloads with 180 TB/yr rating
  • CMR recording technology ensures consistent write performance
  • 512 MB cache accelerates multi-user RAID access
  • SATA 6.0 Gb/s interface fits standard 3.5" bays
  • NASware firmware optimises drive behaviour for up to 8-bay enclosures

10 TB NAS drive for RAID arrays

The WD Red Plus WD100EFGX is a 10 TB CMR hard drive built for multi-bay NAS enclosures. Its NASware firmware tunes drive behaviour for continuous RAID workloads in small and medium business environments. The 7200 RPM spindle and 512 MB cache deliver sustained throughput for shared storage and backup tasks.

Check SATA power and bay clearance

Verify that your NAS chassis accepts 3.5 inch drives up to 26.10 mm high, 101.60 mm wide and 147.00 mm long. A free SATA 6.0 Gb/s port and matching power connector are required. The drive supports up to eight bays per system, so confirm your enclosure bay count before ordering.

Steady output under 180 TB per year

The drive is rated for a 180 TB annual workload rate, reflecting 24x7 operation rather than burst transfers. CMR recording avoids the write slowdowns seen with shingled media during long rebuilds or heavy multi-user access. NASware firmware maintains consistent error recovery during extended RAID rebuilds.

How it compares

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

Price $292.99
Pricier than about 82% of the 4,938 comparable items (median $107.99).
Total capacity 10 TB
Higher than about 85% of the 2,372 comparable items (median 2 TB).
Price per TB $29.30 per TB
Cheaper than about 83% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameWD
Product lineRed Plus
Model nameWD100EFGX
Total capacity10 TB
Recommended useFor NAS systems
Performance
Rotational speed7,200 RPM
Storage
Flash memory typeHard Drive
Recording methodCMR
Cache memory512 MB
Ports & slots
Interface typeSATA 6.0Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Max height26.1 mm
Maximum width101.6 mm
Maximum length147 mm
Shipping weight0.70 kg
Package size152 × 102 × 25 mm

Other versions of this model

5 more in the same range

Questions about this item

Does the WD100EFGX ship with any cables, mounting screws or a SATA-to-USB adapter, or must I buy them separately?

The drive is supplied as a bare 3.5" SATA unit; SATA data and power cables plus mounting hardware are not included and must be sourced separately.

The Red Plus line spans 1 to 14TB — why choose the 10TB model over the smaller or larger capacities?

The 10TB version balances cost per terabyte and raw space for mid-sized NAS arrays while staying within the 8-bay limit and 180 TB/yr workload rating.

The box says 7200 RPM and 512MB cache — what does that translate to in a real NAS running 24/7?

The 7200 RPM spindle and 512MB cache sustain the sequential throughput needed for multi-stream RAID workloads in a continuously operating NAS.

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