15 Best Western Digital NAS Hard Drives with 64MB Cache, Compared
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Selecting the right Western Digital NAS hard drive with 64MB Cache requires balancing storage capacity against rotational speed and duty cycles. We compared 15 models based entirely on the specifications published on their listings.
The Western Digital RE 4TB 7200 RPM Hard Drive leads the list because its 7200 RPM spindle speed and 171 MB/s transfer rate provide sustained performance for continuous 24x7 enterprise arrays. This guide helps you decide which balance of capacity, rotational speed, and workload rating fits your specific network setup.
Our top pick: Western Digital AV-GP 1TB 3.5-Inch Hard Drive.
Quick picks
The best fit for you
- You need an entry-level drive for basic network storage Western Digital AV-GP 1TB 3.5-Inch Hard Drive It offers 1TB of capacity, a 64MB cache, and continuous 24/7 operation for entry-level setups.
- You want the highest capacity drive for surveillance video Western Digital 6TB WD Purple Surveillance Hard Drive It provides 6TB of storage with 64MB cache and supports up to 64 HD cameras.
- You manage demanding commercial multi-bay storage arrays Western Digital 2TB WD Red Pro NAS HDD This drive features a 7200 RPM spindle speed, CMR recording, and a 550TB per year workload rating.
- You run a small NAS with up to eight bays Western Digital 2TB WD Red Plus NAS HDD It utilizes CMR technology and runs at 5400 RPM for enclosures holding up to eight bays.
Our 15 picks
Western Digital AV-GP 1TB 3.5-Inch Hard Drive
Best for: entry-level 24/7 NAS and media servers
- Cache Size
- 64MB Cache (what this guide is about)
- Storage Capacity
- 1TB
- Form Factor
- 3.5in
- Hardware Interface
- SATA 6Gb/s
- Rotational Speed
- 5400RPM~7200RPM
- Dimensions
- 4.8 × 4 × 1 inches
View on Amazon: Western Digital AV-GP 1TB 3.5-Inch Hard Drive
This Western Digital AV-GP is a 3.5-inch internal hard drive built for 24/7 continuous operation. It pairs a 1TB capacity with a 64MB cache and uses an IntelliPower rotation speed between 5400 RPM and 7200 RPM over a SATA 6.0Gb/s interface. If you need entry-level storage for a compact home NAS, media server, or surveillance setup, this drive handles daily network storage demands.
Pros
- Built for 24/7 continuous operation
- IntelliPower speed range of 5400 RPM to 7200 RPM
- SATA 6.0Gb/s interface with 64MB cache
- Engineered for low power consumption and cool running temperatures
Cons
- 1TB capacity is limited for large storage arrays
- Ships as a bulk pack with no SATA cables or mounting accessories
Good fit if
- You need a dedicated 24/7 drive for a basic home NAS or media center.
- You want lower power consumption in an always-on system.
- You already have your own SATA cables and mounting hardware.
Skip if
- You require multi-terabyte capacity for massive media libraries.
- You need cables and installation accessories included in the package.
Verdict: Western Digital AV-GP 1TB Internal Hard Drive delivers 24/7 continuous operation and 64MB of cache for basic network storage setups. It is an effective solution when you need entry-level capacity for a home server or surveillance unit.
Western Digital RE 4TB 7200 RPM Hard Drive
Best for: continuous 24x7 enterprise multi-drive network storage
- Cache Size
- 64MB Cache (what this guide is about)
- Storage Capacity
- 4TB
- Form Factor
- 3.5in
- Hardware Interface
- SATA 6.0Gb/s
- Rotational Speed
- 7200 RPM
- Dimensions
- 9.3 × 5.4 × 3.7 inches
This 3.5-inch internal hard drive provides 4TB of storage, 7200 RPM spindle speed, and a 64MB cache on a SATA 6.0Gb/s interface. It delivers sustained sequential speeds up to 171 MB/s with dual processors and a 1.2 million hour MTBF rating for 24x7 operation. You will find it suits your NAS setup if you need enterprise continuous duty cycles and fast rotational performance for multi-user file access.
Pros
- 7200 RPM rotational speed for fast data retrieval
- 171 MB/s sustained sequential data transfer rate
- 1.2 million hour MTBF rating for 24x7 continuous operation
- Dual processors to optimize drive performance
Cons
- Three-year warranty provided by reseller rather than manufacturer
- Supplied as an OEM bare drive unit
Good fit if
- You need 7200 RPM rotational performance in a 24x7 enterprise environment.
- You want sustained sequential transfer speeds up to 171 MB/s.
- You run continuous duty cycle applications requiring 4TB of storage.
Skip if
- You require direct factory warranty coverage rather than reseller support.
- You need more than 64MB of onboard cache memory.
Verdict: Western Digital RE 4TB 7200 RPM Hard Drive delivers reliable enterprise performance with 171 MB/s transfer speeds and continuous 24x7 operation ratings. It balances sustained throughput with 4TB capacity for demanding multi-drive enclosures.
Western Digital 4TB WD Red Recertified NAS HDD
Best for: everyday 4TB network-attached storage setups
- Cache Size
- 64MB Cache (what this guide is about)
- Storage Capacity
- 4TB
- Form Factor
- 3.5 Inch
- Hardware Interface
- SATA 6 Gb/s
- Rotational Speed
- 5400 RPM Class
- Dimensions
- 5.8 × 4 × 1 inches
View on Amazon: Western Digital 4TB WD Red Recertified NAS HDD
The Western Digital Red 4TB NAS Hard Drive gives you 4TB of capacity in a standard 3.5-inch SATA form factor. Designed for network storage, it pairs a 5400 RPM rotational speed with a 64MB cache and a SATA 6 Gb/s interface. This genuine recertified unit comes with zero power-on hours recorded. It suits you if you want dependable bulk storage for home or small office enclosures that balance capacity with steady mechanical performance.
Pros
- 4TB capacity in a standard 3.5-inch SATA form factor
- 64MB cache buffer paired with SATA 6 Gb/s connectivity
- Genuine recertified drive tested with zero power-on hours
Cons
- 5400 RPM rotational speed runs slower than 7200 RPM drives
- Recertified unit rather than a factory-sealed original drive
Good fit if
- You need 4TB of 3.5-inch SATA storage for a NAS enclosure.
- You prefer a 5400 RPM drive designed for quiet, steady operation.
- You are comfortable with a recertified drive that has zero power-on hours.
Skip if
- You require a faster 7200 RPM drive for heavy transfer demands.
- You require a factory-new drive rather than recertified equipment.
Verdict: Western Digital Red 4TB NAS Hard Drive delivers 4TB of capacity and 64MB of cache at 5400 RPM for network enclosures. It serves as a dependable choice if you want zero power-on hours in a recertified package.
Western Digital 4TB 7200 RPM Enterprise Hard Drive
Best for: continuous 24x7 business-critical storage setups
- Cache Size
- 64MB Cache (what this guide is about)
- Storage Capacity
- 4TB
- Form Factor
- 3.5 Inch
- Hardware Interface
- SATA III
- Rotational Speed
- 7200 RPM
- Dimensions
- 4 × 1.03 × 5.79 inches
View on Amazon: Western Digital 4TB 7200 RPM Enterprise Hard Drive
This renewed 3.5-inch drive provides 4TB of storage with a 7200 RPM rotational speed and a 64MB cache. Built for enterprise workloads, it uses a SATA 6 Gb/s interface, dual processors, and delivers sustained sequential transfer speeds up to 171 MB/s. It supports continuous 24x7 operation with a 1.2 million hour MTBF rating. It suits you if you need high data rates and continuous duty cycles.
Pros
- 7200 RPM rotational speed
- Sustained sequential transfer speeds up to 171 MB/s
- Rated for 24x7 operation with 1.2 million hours MTBF
- Dual processors for high processing power
Cons
- Renewed drive rather than a factory-new unit
- Top capacity in this series reaches only 4TB
Good fit if
- You need 24x7 operation backed by a 1.2 million hour MTBF rating.
- You require 7200 RPM operation and up to 171 MB/s sequential speeds.
Skip if
- You prefer brand-new factory hardware over renewed equipment.
- You need single-drive storage capacities greater than 4TB.
Verdict: Western Digital RE 4TB Enterprise Drive delivers dependable 7200 RPM performance and continuous 24x7 duty cycle reliability. It provides 171 MB/s sustained transfer rates for business-critical network storage.
Western Digital Blue 4TB 5400 RPM Renewed HDD
Best for: budget-conscious standard PC storage requiring 4TB capacity
- Cache Size
- 64MB Cache (what this guide is about)
- Storage Capacity
- 4TB
- Form Factor
- 3.5in
- Hardware Interface
- SATA 6 Gb/s
- Rotational Speed
- 5400 RPM Class
- Compatibility
- PC
View on Amazon: Western Digital Blue 4TB 5400 RPM Renewed HDD
This renewed Western Digital Blue 3.5-inch hard drive provides 4TB of storage with a 64MB cache and a 5400 RPM rotational speed over a SATA 6 Gb/s interface. It incorporates IntelliSeek and NoTouch Ramp Load technology to manage power consumption and head positioning. If you need everyday desktop storage capacity and basic drive health monitoring via Data LifeGuard algorithms without requiring high-speed enterprise specs, this unit fits your basic storage setup.
Pros
- 4TB capacity paired with a 64MB cache
- IntelliSeek calculates seek speeds to reduce power draw and noise
- NoTouch Ramp Load technology keeps recording head off disk surface
- Data LifeGuard algorithms actively monitor internal drive health
Cons
- Certified refurbished condition rather than brand new
- 5400 RPM rotational speed offers lower throughput than 7200 RPM drives
- Compatibility specification designates PC rather than dedicated NAS environments
Good fit if
- You need 4TB of capacity with a 64MB cache for everyday desktop tasks.
- You want lower noise and vibration via 5400 RPM operation and IntelliSeek.
- You are satisfied deploying a certified renewed drive in your system.
Skip if
- You require a higher rotational speed of 7200 RPM for heavy file transfers.
- You prefer factory-new hardware over a certified renewed product.
Verdict: Western Digital Blue 4TB 5400 RPM Drive delivers standard 4TB desktop capacity and 64MB cache in a certified renewed form factor. It serves secondary PC storage setups prioritizing lower noise and basic head-parking hardware protection.
Western Digital WD Blue 1TB 7200 RPM Hard Drive
Best for: everyday 1TB desktop storage needs
- Cache Size
- 64MB Cache (what this guide is about)
- Storage Capacity
- 1TB
- Form Factor
- 3.5"
- Hardware Interface
- SATA 6 Gb/s
- Rotational Speed
- 7200 RPM
- Compatibility
- PC
View on Amazon: Western Digital WD Blue 1TB 7200 RPM Hard Drive
The Western Digital Blue 1TB hard drive provides 7200 RPM spindle speed and a 64MB cache on a standard 3.5-inch SATA interface. Designed for PC compatibility, this drive delivers standard desktop throughput for daily storage tasks. If you need a basic 1TB drive for a desktop setup or standard backup target, its balance of 7200 RPM operation and SATA 6 Gb/s connectivity offers standard mechanical performance.
Pros
- 7200 RPM rotational speed
- 64MB cache size
- SATA 6 Gb/s interface
- Includes Acronis True Image WD Edition cloning software
Cons
- 1TB maximum capacity for this model
- Designed for PC compatibility rather than dedicated NAS environments
Good fit if
- You need a 1TB 3.5-inch drive running at 7200 RPM.
- You want included cloning software for disk management.
Skip if
- You need storage capacities greater than 1TB.
- You require drive firmware specifically tuned for NAS enclosures.
Verdict: Western Digital Blue 1TB 7200 RPM HDD delivers 7200 RPM performance with a 64MB cache for everyday 3.5-inch SATA configurations. It suits standard desktop and single-drive PC computing requirements.
Western Digital 2TB WD Red Plus NAS HDD
Best for: small-business NAS setups up to 8 bays
- Cache Size
- 64MB Cache (what this guide is about)
- Storage Capacity
- 2TB
- Form Factor
- 3.5"
- Hardware Interface
- SATA 6 Gb/s
- Rotational Speed
- 5400 RPM
- Recording Technology
- CMR
The Western Digital 2TB WD Red Plus NAS Hard Drive provides 24x7 storage designed for small or medium business NAS enclosures up to 8 bays. It features conventional magnetic recording (CMR) technology, a 64MB cache, and a 5400 RPM rotational speed on a SATA 6 Gb/s interface. With an annualized workload rate of up to 180 TB/yr and built-in NASware firmware, you get reliable continuous operation for multi-drive network environments.
Pros
- Uses conventional magnetic recording (CMR) technology
- Supports multi-drive NAS systems up to 8 bays
- Workload rate rating of up to 180 TB per year
- Includes a 3-year limited warranty
Cons
- 5400 RPM rotational speed is slower than 7200 RPM drives
- Maximum bay support is capped at 8 bays
- Modest 2TB capacity limit on this model
Good fit if
- You need a CMR drive for an enclosure with up to 8 bays.
- You want a 2TB drive rated for continuous 24x7 operation.
- You require an annualized workload rating of up to 180 TB/yr.
Skip if
- You need a faster 7200 RPM spindle speed.
- You need more than 2TB of capacity per drive slot.
Verdict: Western Digital 2TB WD Red Plus NAS Hard Drive delivers dependable CMR recording and 24x7 durability for enclosures up to 8 bays. Its 5400 RPM speed and 64MB cache make it an efficient fit for small-office network storage.
Western Digital WD Black 2TB 7200 RPM HDD
Best for: high-performance desktop and creative system builds
- Cache Size
- 64MB Cache (what this guide is about)
- Storage Capacity
- 2TB
- Form Factor
- 3.5"
- Hardware Interface
- SATA 6 Gb/s
- Rotational Speed
- 7200 RPM
- Dimensions
- 5.8 × 4 × 1 inches
The Western Digital WD Black is a 3.5-inch internal hard drive built with 2TB of storage, a 64MB cache, and a 7200 RPM rotational speed. Running on a SATA 6 Gb/s interface, it includes Western Digital's StableTrac and Dynamic Cache Technology. This drive suits you if you need fast drive speeds for system builds, gaming setups, or creative workstations alongside a five-year limited warranty.
Pros
- 7200 RPM rotational speed
- 5-year limited warranty
- StableTrac and Dynamic Cache Technology
- SATA 6 Gb/s interface with 64MB cache
Cons
- 2TB storage capacity is smaller than higher-capacity variants
- Desktop gaming design rather than dedicated NAS-specific model line
Good fit if
- You want a 7200 RPM drive backed by a 5-year limited warranty.
- You need 2TB of storage for desktop gaming or creative work.
- You want StableTrac and Dynamic Cache Technology to balance drive performance.
Skip if
- You need more than 2TB of storage capacity on a single drive.
- You prefer drives engineered specifically for dedicated NAS environments rather than desktop systems.
Verdict: Western Digital 2TB WD Black 7200 RPM HDD delivers fast rotational speeds, 64MB cache, and a 5-year warranty for demanding desktop setups. It provides steady performance if 2TB matches your capacity requirements.
Western Digital 3TB WD Blue 5400 RPM HDD
Best for: everyday PC storage and local desktop backups
- Cache Size
- 64MB Cache (what this guide is about)
- Storage Capacity
- 3TB
- Form Factor
- 3.5"
- Hardware Interface
- SATA 6 Gb/s
- Rotational Speed
- 5400 RPM
- Compatibility
- PC
The Western Digital 3TB WD Blue is a 3.5-inch internal hard drive designed for PC storage. It features 3TB of storage capacity, a 5400 RPM rotational speed, and a 64MB cache running on a SATA 6 Gb/s interface. If you need steady storage for everyday computing tasks, local desktop backups, or secondary file drives, this 5400 RPM unit provides basic PC compatibility alongside included Acronis True Image cloning software.
Pros
- 3TB storage capacity in a standard 3.5-inch form factor
- SATA 6 Gb/s interface with 64MB cache
- Includes Acronis True Image WD Edition cloning software
- Two-year manufacturer limited warranty
Cons
- 5400 RPM rotational speed is slower than 7200 RPM drives
- Specified for PC compatibility rather than dedicated multi-bay NAS enclosures
Good fit if
- You need 3TB of storage for desktop computing and secondary files.
- You want bundled Acronis True Image software for disk cloning.
- You prefer a 5400 RPM drive for general PC use.
Skip if
- You need a faster 7200 RPM drive for higher transfer rates.
- You require drive firmware specifically tuned for multi-drive NAS systems.
Verdict: Western Digital 3TB WD Blue 5400 RPM HDD delivers standard desktop capacity with a 64MB cache and cloning utilities. It serves everyday PC storage needs where high spindle speeds are not necessary.
Western Digital 4TB WD Blue 3.5-Inch HDD
Best for: everyday PC storage and routine file backups
- Cache Size
- 64MB Cache (what this guide is about)
- Storage Capacity
- 4TB
- Form Factor
- 3.5"
- Hardware Interface
- SATA 6 Gb/s
- Rotational Speed
- 5400 RPM
- Compatibility
- PC
The Western Digital 4TB WD Blue is a 3.5-inch internal hard drive built with a SATA 6 Gb/s interface, a 5400 RPM rotational speed, and 64MB cache. It comes with downloadable Acronis True Image WD Edition cloning software for data migration. This drive suits you if you need a standard 4TB capacity drive for everyday desktop computing and primary file storage.
Pros
- 4TB storage capacity with 64MB cache
- 5400 RPM rotational speed for quiet everyday computing
- Standard 3.5-inch form factor with SATA 6 Gb/s interface
- Includes Acronis True Image WD Edition cloning software
Cons
- 5400 RPM spindle speed is slower than 7200 RPM options
- Factory compatibility is specified for PC rather than dedicated NAS environments
Good fit if
- You need 4TB of storage space with a 64MB cache for standard desktop tasks.
- You prefer a 5400 RPM drive designed for everyday computing setups.
- You want included cloning software to migrate your system drive.
Skip if
- You need a faster 7200 RPM drive for high-throughput workloads.
- You require hardware certified specifically for multi-drive NAS enclosures.
Verdict: Western Digital 4TB WD Blue 3.5-Inch HDD provides 4TB of capacity and 64MB cache for routine desktop storage needs. Its 5400 RPM speed makes it suitable for everyday computing rather than continuous high-speed transfers.
Western Digital 2TB WD Red Pro NAS HDD
Best for: high-intensity multi-bay commercial NAS setups
- Cache Size
- 64MB Cache (what this guide is about)
- Storage Capacity
- 2TB
- Form Factor
- 3.5"
- Hardware Interface
- SATA 6 Gb/s
- Rotational Speed
- 7200 RPM
- Recording Technology
- CMR
The Western Digital 2TB WD Red Pro gives you a 7200 RPM spindle speed, 64MB cache, and CMR recording technology in a standard 3.5-inch form factor. Engineered for 24x7 multi-user NAS environments, it supports systems with an unlimited number of drive bays and handles a workload rate up to 550TB per year. You will find it well suited for high-demand networked storage where continuous write cycles and RAID consistency matter.
Pros
- 7200 RPM rotational speed for fast data transfer
- CMR recording technology maintains RAID consistency
- 550TB per year workload rating handles heavy multi-user demands
- Engineered for NAS systems with an unlimited number of bays
Cons
- 2TB storage space is limited for large media libraries
- 64MB cache is modest compared to higher-capacity models
Good fit if
- You run high-intensity 24x7 multi-user workloads in a multi-bay NAS enclosure.
- You require 7200 RPM performance and CMR recording for your RAID arrays.
Skip if
- You need more than 2TB of capacity in a single drive slot.
- You prefer a slower, quieter 5400 RPM drive for basic archival storage.
Verdict: Western Digital 2TB WD Red Pro NAS Hard Drive delivers fast 7200 RPM CMR performance and a robust 550TB per year workload rating for multi-bay storage arrays. It is an ideal fit when continuous operation and RAID stability are your primary requirements.
Western Digital 500GB WD Purple Hard Drive
Best for: entry-level 24/7 surveillance recording systems
- Cache Size
- 64MB Cache (what this guide is about)
- Storage Capacity
- 500GB
- Form Factor
- 3.5"
- Hardware Interface
- SATA 6 Gb/s
- Dimensions
- 5.79 × 4 × 1.03 inches
- Weight
- 15.8 ounces
The Western Digital 500GB WD Purple is a 3.5-inch internal hard drive designed for 24/7 surveillance systems. It features a SATA 6 Gb/s interface, a 64MB cache, and support for up to 64 HD cameras. This unit suits you if you need a low-capacity drive for continuous recording setups or light storage tasks where multi-terabyte arrays are unnecessary. It also includes AllFrame technology and a 3-year manufacturer's limited warranty.
Pros
- Built for 24/7 surveillance operation
- Supports up to 64 HD cameras
- Equipped with 64MB cache and SATA 6 Gb/s interface
- 3-year manufacturer's limited warranty
Cons
- Small 500GB total storage capacity
- Large 3.5-inch form factor requires full-size drive bay
Good fit if
- You need continuous 24/7 recording for up to 64 HD surveillance cameras.
- You require a 3.5-inch SATA drive with a 64MB cache for modest storage setups.
Skip if
- You need multi-terabyte capacity for archival storage.
- You require a smaller 2.5-inch drive form factor.
Verdict: Western Digital 500GB WD Purple Hard Drive provides dedicated 24/7 surveillance support and a 64MB cache for small-scale monitoring setups. It delivers reliable video recording specs where large multi-terabyte capacities are not required.
Western Digital 3TB WD Purple Surveillance Hard Drive
Best for: continuous 24/7 multi-camera surveillance recording systems
- Cache Size
- 64MB Cache (what this guide is about)
- Storage Capacity
- 3TB
- Form Factor
- 3.5"
- Hardware Interface
- SATA 6 Gb/s
- Dimensions
- 5.79 × 4 × 1.03 inches
- Weight
- 15.9 ounces
View on Amazon: Western Digital 3TB WD Purple Surveillance Hard Drive
This Western Digital drive provides 3TB of storage with a 64MB cache and a SATA 6 Gb/s interface in a standard 3.5-inch form factor. Engineered for 24/7 surveillance workloads, it features AllFrame technology and supports setups with up to 64 HD cameras. It suits you if you need continuous-recording storage for a multi-camera security system or dedicated video surveillance setup.
Pros
- Built for 24/7 continuous surveillance operation
- Supports up to 64 HD surveillance cameras
- Features AllFrame technology for surveillance workloads
- Includes a 3-year manufacturer limited warranty
Cons
- Rotational speed is not specified in the product data
- 3TB capacity is smaller than available 6TB to 14TB variations
Good fit if
- You need a 3.5-inch drive engineered for 24/7 continuous video recording.
- You run a surveillance setup monitoring up to 64 HD cameras.
Skip if
- You require more than 3TB of storage capacity per drive bay.
- You need a drive designed specifically for standard desktop computing.
Verdict: Western Digital Purple 3TB Surveillance Hard Drive delivers dedicated 24/7 recording support for systems running up to 64 HD cameras. Its 64MB cache and SATA 6 Gb/s interface provide steady specification-matched performance for security setups.
Western Digital 6TB WD Purple Surveillance Hard Drive
Best for: high-capacity 24/7 multi-camera surveillance storage
- Cache Size
- 64MB Cache (what this guide is about)
- Storage Capacity
- 6TB
- Form Factor
- 3.5"
- Hardware Interface
- SATA 6 Gb/s
- Dimensions
- 5.79 × 4 × 1.03 inches
- Weight
- 1.43 pounds
View on Amazon: Western Digital 6TB WD Purple Surveillance Hard Drive
The Western Digital 6TB Purple Surveillance Hard Drive gives you a 3.5-inch SATA interface drive built for continuous 24/7 surveillance recording. With a 64MB cache and 6TB capacity, it is designed to support setups running up to 64 HD cameras simultaneously. It also includes AllFrame technology and carries a 3-year limited warranty. This drive suits you if you need large-capacity, around-the-clock storage for multi-camera video recording systems.
Pros
- 6TB capacity with 64MB cache
- Engineered for 24/7 surveillance and up to 64 HD cameras
- Equipped with AllFrame technology
- 3-year manufacturer's limited warranty
Cons
- Surveillance-oriented features rather than standard NAS file-sharing firmware
- RPM speed is not specified in the official data
Good fit if
- You need 6TB of storage optimized for 24/7 video surveillance.
- You connect up to 64 HD surveillance cameras to your recording system.
- You want a drive covered by a 3-year limited warranty.
Skip if
- You need a drive designed specifically for general NAS file-server workloads rather than surveillance.
- You require explicit RPM specifications for your drive array.
Verdict: Western Digital 6TB Purple Surveillance Hard Drive is built for continuous surveillance environments, offering 6TB of capacity and support for up to 64 HD cameras. Its 64MB cache, AllFrame design, and 3-year limited warranty make it a solid choice for multi-camera video recording.
Western Digital 2TB WD Red Plus CMR HDD
Best for: small-office NAS systems up to 8 bays
- Cache Size
- 64MB Cache (what this guide is about)
- Storage Capacity
- 2TB
- Form Factor
- 3.5"
- Hardware Interface
- SATA 6 Gb/s
- Rotational Speed
- 5400 RPM Class
- Recording Technology
- CMR
The Western Digital 2TB WD Red Plus 5400 RPM NAS HDD is a 3.5-inch internal SATA drive built for home and small business network storage. It combines conventional magnetic recording (CMR) technology with a 64MB cache and a 5400 RPM rotational speed. Rated for up to 8-bay enclosures with a 180TB per year workload, it gives you reliable continuous operation for multi-user file sharing and local backups.
Pros
- Uses CMR technology for consistent multi-drive write performance
- Supported for NAS enclosures up to 8 drive bays
- Workload rating reaches up to 180TB per year
- Includes 3D Active Balance vibration and noise reduction
- Backed by a 3-year limited warranty
Cons
- Rotational speed capped at 5400 RPM performance class
- Enclosure support limited to 8 drive bays
Good fit if
- You need a CMR hard drive for a NAS array containing up to 8 bays.
- You keep your annual data workload under the 180TB yearly rating.
- You want lower rotational speeds for reduced noise and vibration in desktop enclosures.
Skip if
- You run a rackmount or enterprise NAS array with more than 8 bays.
- You require 7200 RPM rotational speed for higher sustained mechanical transfer rates.
Verdict: Western Digital 2TB WD Red Plus 5400 RPM NAS HDD delivers reliable CMR recording and multi-drive balancing for systems up to 8 bays. It serves continuous network storage needs across small office and home server setups.
Specifications side by side
| Spec | Western Digital AV-GP 1TB 3.5-Inch Hard Drive | Western Digital RE 4TB 7200 RPM Hard Drive | Western Digital 4TB WD Red Recertified NAS HDD | Western Digital 4TB 7200 RPM Enterprise Hard Drive | Western Digital Blue 4TB 5400 RPM Renewed HDD | Western Digital WD Blue 1TB 7200 RPM Hard Drive | Western Digital 2TB WD Red Plus NAS HDD | Western Digital WD Black 2TB 7200 RPM HDD | Western Digital 3TB WD Blue 5400 RPM HDD | Western Digital 4TB WD Blue 3.5-Inch HDD | Western Digital 2TB WD Red Pro NAS HDD | Western Digital 500GB WD Purple Hard Drive | Western Digital 3TB WD Purple Surveillance Hard Drive | Western Digital 6TB WD Purple Surveillance Hard Drive | Western Digital 2TB WD Red Plus CMR HDD |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Storage Capacity | 1TB | 4TB | 4TB | 4TB | 4TB | 1TB | 2TB | 2TB | 3TB | 4TB | 2TB | 500GB | 3TB | 6TB | 2TB |
| Form Factor | 3.5in | 3.5in | 3.5 Inch | 3.5 Inch | 3.5in | 3.5" | 3.5" | 3.5" | 3.5" | 3.5" | 3.5" | 3.5" | 3.5" | 3.5" | 3.5" |
| Hardware Interface | SATA 6Gb/s | SATA 6.0Gb/s | SATA 6 Gb/s | SATA III | SATA 6 Gb/s | SATA 6 Gb/s | SATA 6 Gb/s | SATA 6 Gb/s | SATA 6 Gb/s | SATA 6 Gb/s | SATA 6 Gb/s | SATA 6 Gb/s | SATA 6 Gb/s | SATA 6 Gb/s | SATA 6 Gb/s |
| Rotational Speed | 5400RPM~7200RPM | 7200 RPM | 5400 RPM Class | 7200 RPM | 5400 RPM Class | 7200 RPM | 5400 RPM | 7200 RPM | 5400 RPM | 5400 RPM | 7200 RPM | not specified | not specified | not specified | 5400 RPM Class |
| Cache Size | 64MB | 64MB | 64MB | 64 MB | 64 MB | 64 MB | 64 MB | 64 MB | 64 MB | 64 MB | 64 MB | 64 MB | 64 MB | 64 MB | 64MB |
| Recording Technology | not specified | not specified | not specified | not specified | not specified | not specified | CMR | not specified | not specified | not specified | CMR | not specified | not specified | not specified | CMR |
| Bay Support | not specified | not specified | not specified | not specified | not specified | not specified | up to 8 bays | not specified | not specified | not specified | unlimited number of bays | not specified | not specified | not specified | up to 8 bays |
| Workload Rate Limit | not specified | not specified | not specified | not specified | not specified | not specified | up to 180 TB/yr | not specified | not specified | not specified | 550TB/yr | not specified | not specified | not specified | up to 180TB/yr |
| Compatibility | not specified | not specified | not specified | not specified | PC | PC | not specified | not specified | PC | PC | not specified | not specified | not specified | not specified | not specified |
| Size | 1 TB | 4 TB | 4TB | 4 TB | 4TB | 1TB | 2TB | 2TB | 3TB | 4TB | 2TB | 500GB | 3TB | 6TB | 2TB |
| Dimensions | 4.8 × 4 × 1 inches | 9.3 × 5.4 × 3.7 inches | 5.8 × 4 × 1 inches | 4 × 1.03 × 5.79 inches | 5.79 × 4 × 1.03 inches | 5.8 × 4 × 1 inches | 5.8 × 4 × 1 inches | 5.8 × 4 × 1 inches | 5.87 × 4 × 1.03 inches | 5.87 × 4 × 1.03 inches | 6.1 × 4.33 × 1.18 inches | 5.79 × 4 × 1.03 inches | 5.79 × 4 × 1.03 inches | 5.79 × 4 × 1.03 inches | 7.5 × 5 × 5 inches |
| Weight | not specified | 1 pounds | 1.5 pounds | 1.98 pounds | 1.5 pounds | 15.5 ounces | 1.32 pounds | 1.72 pounds | 1.41 pounds | 1.5 pounds | 1.5 pounds | 15.8 ounces | 15.9 ounces | 1.43 pounds | 2 kilograms |
| Color | Silver | Silver | black/silver | Silver | Blue | blue | Red | black | Blue | blue | Red | Purple | Purple | Purple | Red |
| Model | WD10EURX-OEM-2YR-cr | WD4000FYYZ OEM-cr | WD40EFRX#CR | 4348277502 | WD40EZRZ#CR | WD10EZEX | AU-44LB-F32X | WD2003FZEX-SPSRLA0 | 1412590 | WD40EZRZ | WD2002FFSX-SPPF8N0 | WD05PURZ | WD30PURZ | WD60PURZ | WDBAVV0020HNC-WRSN |
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Key Specifications for Choosing Western Digital Drives
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Check Annual Workload Ratings
You should review the annual workload rating if you deploy drives into multi-user network arrays. Heavy transfer environments require components designed to process high data volumes without failure. For instance, the Western Digital 2TB WD Red Pro NAS HDD specifies a workload rating of 550TB per year alongside CMR recording technology. Standard desktop units lack these enterprise metrics. Comparing workload figures helps you ensure that your drive handles sustained shared reads and writes without exceeding factory operating limits during continuous service.
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Select Surveillance Optimization Features
You must evaluate firmware features when configuring continuous security video setups. Surveillance hardware prioritizes non-stop write streams over burst desktop access. Look at camera channel ceilings and specialized streaming features on the spec sheet. The Western Digital 6TB WD Purple Surveillance Hard Drive includes AllFrame design and explicit support for up to 64 HD cameras. Choosing a drive rated for continuous video streaming prevents lost video frames. Matching camera counts to listed hardware limits protects your video storage system during 24/7 multi-camera recording tasks.
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Compare Spindle Speed Ratings
You should check rotational speed to balance file transfer speed against enclosure heat. Drives spinning at 7200 RPM deliver higher throughput for demanding data transfers. For example, the Western Digital RE 4TB 7200 RPM Hard Drive publishes sustained transfer rates of 171 MB/s. If your system runs general secondary backups, a 5400 RPM drive reduces power consumption and heat output. You need to inspect your daily operational needs before deciding between high-speed 7200 RPM access and cooler 5400 RPM operation in your storage environment.
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Verify System Compatibility Designations
You must confirm whether a drive is intended for desktop computing or continuous network deployment. Certain units list explicit PC compatibility and cater to single-drive computing or local file storage. The Western Digital WD Blue 1TB 7200 RPM Hard Drive carries a PC compatibility designation for standard desktop setups. You should avoid installing drives meant strictly for basic desktop PCs into demanding network enclosures. Checking system compatibility attributes ensures the drive matches your intended hardware environment, operating duty cycles, and everyday storage architecture requirements.
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Review Manufacturer Warranty Lengths
You should review published warranty lengths before selecting a drive for critical workloads. Warranty coverage periods reflect the intended durability tier of the drive series. The Western Digital WD Black 2TB 7200 RPM HDD provides a 5-year warranty, which exceeds standard 2-year or 3-year periods seen on consumer-level models. Long warranty coverage offers peace of mind for creative workstations and essential data storage. Check the warranty specification on the product listing to ensure the manufacturer terms align with the expected lifespan of your storage installation.
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Match Capacity to Workload
You need to choose a capacity that matches your data volume and backup retention goals. Available drives in this category span from compact 500GB units to spacious 6TB models. For small-scale surveillance or basic operating boot storage, the Western Digital 500GB WD Purple Hard Drive offers adequate space without unneeded overhead. High-volume media libraries or multi-camera recording setups require larger drives like 4TB or 6TB options. Calculating your current file storage and planned annual data growth ensures you select the correct capacity tier.
Frequently asked questions
What does a 64MB cache do in a Western Digital NAS hard drive?
A 64MB cache serves as dedicated buffer memory between the SATA interface and the mechanical platters. It temporarily holds frequently accessed data and write commands to smooth out drive operations. In drives like the 4TB WD Red or 1TB AV-GP, this 64MB buffer helps manage steady data streams and system requests without causing mechanical bottlenecks during routine network tasks.
What is the highest capacity Western Digital hard drive with a 64MB cache?
The highest capacity model in this 64MB cache category is 6TB, available on the Western Digital 6TB WD Purple Surveillance Hard Drive. If you do not require 6TB, other drives in this group provide options at 500GB, 1TB, 2TB, 3TB, and 4TB capacities to fit smaller single-drive or multi-drive setups.
Can you install Western Digital Blue hard drives in a NAS enclosure?
You can physically connect them via SATA, but Western Digital Blue models are officially designated for PC compatibility. Drives such as the WD Blue 4TB and WD Blue 1TB are engineered for standard desktop computing and local backups rather than continuous network environments. NAS setups usually benefit more from drives rated specifically for 24/7 multi-drive operation.
How does rotational speed affect performance across these 64MB cache drives?
Rotational speed directly impacts data throughput and internal drive latency. Drives running at 7200 RPM, such as the Western Digital RE 4TB, achieve sustained transfer speeds up to 171 MB/s for fast file delivery. Meanwhile, drives operating at 5400 RPM prioritize cooler, quieter running characteristics, making them well-suited for everyday storage configurations where raw transfer speed is secondary.
Which Western Digital 64MB cache drives are built for video surveillance systems?
The Western Digital Purple family is specifically engineered for 24/7 surveillance recording setups. The 3TB WD30PURZ and 6TB WD60PURZ models support configurations running up to 64 HD video cameras, with the 6TB unit featuring an AllFrame design. For smaller installations, the 500GB WD05PURZ provides dedicated surveillance functionality with the same 64MB cache size.
What form factor and interface do these Western Digital drives share?
All 15 Western Digital models in this guide share a standard 3.5-inch form factor and a SATA hardware interface. These dimensions ensure physical compatibility with desktop PC drive bays, multi-bay network storage enclosures, and standard drive caddies. You will need a compatible 3.5-inch SATA bay and standard SATA power and data cables to install them.
What is the main difference between WD Red Plus and WD Red Pro drives?
The primary differences lie in rotational speed and intended workload scale. The 2TB WD Red Plus operates at 5400 RPM for network enclosures holding up to 8 bays. The 2TB WD Red Pro steps up to 7200 RPM and carries a 550TB per year workload rating for commercial multi-bay arrays. Both utilize conventional magnetic recording technology.