Western Digital WD Red Pro NAS Internal Hard Drive (3.5 inch)
Capacity
Price
$629.70
Per TB$39.36
Buy on Amazon
Reasons to buy
- CMR recording (not SMR) for sustained multi-drive NAS and RAID workloads
- 7200 RPM class performance in a 3.5 inch internal form factor
- Rated for up to 550 TB per year workload on many models (see Western Digital datasheet for definitions and limits)
- Intended for 24x7 use in multi-bay, RAID-optimized NAS systems
- Western Digital publishes NAS ecosystem compatibility testing with many enclosure vendors
Reasons to avoid
- Higher price per TB than entry-level or SMR desktop drives
- Higher power draw and noise than 5400 RPM class alternatives
- Mechanical HDD: not appropriate for portable shock-prone applications
Specifications
- rpm
- 7200
- series
- WD Red Pro
- interface
- SATA 6 Gb/s
- recording
- CMR
- form factor
- 3.5 inch
- manufacturer
- Western Digital
- workload rate tbw per year
- 550
Researched and maintained by Hard Drive Prices Editorial Team. · Updated April 9, 2026
Specifications
- rpm
- 7200
- series
- WD Red Pro
- interface
- SATA 6 Gb/s
- recording
- CMR
- form factor
- 3.5 inch
- manufacturer
- Western Digital
- workload rate tbw per year
- 550
Researched and maintained by Hard Drive Prices Editorial Team. · Updated April 9, 2026
What you're getting
Western Digital WD Red Pro is a 3.5 inch internal NAS hard drive family tuned for RAID-optimized, multi-bay NAS systems. Drives in this line use a SATA 6 Gb/s interface and CMR recording, with 7200 RPM class performance intended for continuous operation.
Amazon listing highlights for this series include: availability across a wide range of capacities (Western Digital publishes up to 22 TB or higher depending on generation and region); suitability for RAID-optimized NAS with an unlimited number of bays; a rated workload of up to 550 TB per year under Western Digital definitions (depends on environment and configuration); design for high-intensity 24x7 multi-user NAS environments; and broad compatibility testing with NAS system vendors.
Designed with medium and large business NAS deployments in mind, WD Red Pro is positioned for archiving and sharing data as well as RAID rebuilds on extended file systems such as ZFS. Actual user-visible capacity is less than labeled capacity depending on operating environment.
Buying context
Typical value (not live pricing)
Western Digital WD Red Pro often lands near roughly $28-$40 per TB at mainstream U.S. retailers depending on capacity, with larger SKUs usually improving $/TB. Use the live price on this page for anything time-sensitive; this line is only for quick value comparisons.
Where this line often shows up
- RAID-tuned Synology towers and rackmounts (for example 8-bay to 12-bay DiskStation or RackStation builds where vibration adds up)
- QNAP and ASUSTOR multi-bay NAS shelves used for shared folders, snapshots, and iSCSI
- TrueNAS Scale or TrueNAS CORE ZFS pools where CMR behavior across many spindles matters for resilver and scrub times
- SMB and prosumer deployments that mix archiving, virtualization storage, and heavier multi-user workloads
Features
- SATA 6 Gb/s interface
- NASware feature set tuned for NAS workloads (per Western Digital)
- Rotational vibration compensation and shock sensing typical of the Red Pro line
- Five-year limited warranty on many retail SKUs (confirm on your box and region)