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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

  • InterfaceSATA 6.0Gb/s
  • Capacity10TB
  • NAND Flash Memory TypeHard Drive
  • Recording TechnologyCMR
  • RPM7200 RPM
  • Cache512MB

Capacity 10TB

Show 4 more configurations
  • 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.

Highlights

  • 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

Specifications

BrandWD
SeriesRed Plus
ModelWD100EFGX
InterfaceSATA 6.0Gb/s
Capacity10TB
NAND Flash Memory TypeHard Drive
Recording TechnologyCMR
RPM7200 RPM
Cache512MB
FeaturesTuned for NAS with NASware™
Western Digital’s exclusive NASware™ technology fine tunes drive parameters to match NAS system workloads, which helps increase performance and reliability.
Designed for Continuous Operation
Since your NAS system is always on, a reliable drive is essential. WD Red Plus hard drives are designed for systems that operate 24x7, giving users the confidence of knowing they can reliably access their data.
Tested for Dependable Compatibility
Western Digital partners with a wide range of NAS system vendors for extensive testing to ensure compatibility with most NAS
UsageFor NAS systems
Form Factor3.5"
Height (maximum)26.10mm
Width (maximum)101.60mm
Length (maximum)147.00mm
Shipping weight0.70 kg
Package size152 × 102 × 25 mm

Other versions of this model

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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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