Top 9 WD Red 4TB – Internal Hard Drives

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1. Western Digital

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128 MB Cache, 3.5" -WD40EFZX, Western Digital 4TB WD Red Plus NAS Internal Hard Drive HDD, 5400 RPM, CMR, SATA 6 Gb/s

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Western Digital #ad - Small or medium business NAS systems in a 24x7 environment. Nasware firmware for compatibility. Workload rate will vary depending on your hardware and software components and configurations. Available in capacities ranging from 1-14TB with support for up to 8 bays. Supports up to 180 tb/yr workload rate workload rate is defined as the amount of user data transferred to or from the hard drive. Workload rate is annualized TB transferred 8760 / recorded power-on hours.
BrandWestern Digital #ad
ManufacturerWestern Digital Technologies, Inc. #ad
Height1.03 Inches
Length5.79 Inches
Weight1.32 Pounds
Width4 Inches
Part NumberWD40EFZX
ModelWD40EFZX
Warranty3 year limited warranty

2. Western Digital

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5400 RPM, SATA 6 Gb/s, SMR, 3.5", Western Digital 4TB WD Red NAS Internal Hard Drive HDD, WD40EFAX, 256MB Cache

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Western Digital #ad - Workload rate is annualized TB transferred 8760 / recorded power-on hours. Nas systems with daily workloads associated with personal and home office environments and idle time available to perform necessary background operations. Nasware firmware for compatibility. Available in capacities ranging from 2-6TB with support for up to 8 bays. Supports up to 180 tb/yr workload rate workload rate is defined as the amount of user data transferred to or from the hard drive. 3-year limited warranty. 5400rpm performance class.
BrandWestern Digital #ad
ManufacturerWestern Digital #ad
Height4 Inches
Length1.03 Inches
Weight1.2 Pounds
Width5.79 Inches
Part NumberWD40EFAX
ModelWD40EFAX
Warranty3-year manufacturer's limited warranty

3. Western Digital

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CMR, 256 MB Cache, SATA 6 Gb/s, 3.5", 7200 RPM, WD4003FFBX, Western Digital 4TB WD Red Pro NAS Internal Hard Drive HDD

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Western Digital #ad - 5-year limited warranty. Enhanced reliability with 3d Active Balance Plus technology and error recovery controls with NASware 3. 0 technology. 7200rpm performance class. Available in capacities ranging from 2-14TB with support for up to 24 bays. Supports up to 300 tb/yr workload rate workload rate is defined as the amount of user data transferred to or from the hard drive. Extended drive testing to ensure each drive is tested for extended reliable operation. Workload rate is annualized TB transferred 8760 / recorded power-on hours.
BrandWestern Digital #ad
ManufacturerWestern Digital #ad
Height1.03 Inches
Length5.79 Inches
Weight1.58 Pounds
Width4 Inches
Part NumberWD4003FFBX
ModelWD4003FFBX
WarrantyWestern Digital ("WD") values your business and always attempts to provide you the very best of service.No limited warranty is provided by WD unless your WD Product ("Product") was purchased from an authorizeddistributor or authorized reseller. Distributors may sell Products to resellers who then sell Products to end users.Please see below for warranty information or obtaining service. No warranty service is provided unless the Productis returned to an authorized return center in the region (warranty regions are identified as Canada, U.S.A., LatinAmerica, Europe, Middle East, Africa, Asia Pacific, India and Thailand) where the Product was first shipped by WD,which may have regional specific warranty implications.If your Product was purchased as a component integrated within a system by a system manufacturer, no limitedwarranty is provided by WD.

4. Western Digital

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WDS400T1R0A, SATA III 6 Gb/s, Up to 560 MB/s, 2.5"/7mm, Western Digital 4TB WD Red SA500 NAS 3D NAND Internal SSD

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Western Digital #ad - Storage optimized for caching in NAS systems to rapidly access your most frequently used files. Reduces latency and improves responsiveness for oltp databases, 4K and 8K video editing, multi-user environments, photo rendering, and more. Purpose-built for nas with proven western Digital 3D NAND to deliver maximum SATA performance to both home and business users. Superior endurance can handle the heavy read and write loads demanded by NAS, giving you the reliability you need in a 24/7 environment.
BrandWestern Digital #ad
ManufacturerWestern Digital #ad
Height0.28 Inches
Length3.95 Inches
Weight0.11 Pounds
Width2.75 Inches
Part NumberWDS400T1R0A
ModelWDS400T1R0A
Warranty5-year manufacturer's limited warranty

5. Western Digital

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WD Red Pro 4TB NAS Hard Disk Drive, WD4001FFSX, 7200 RPM SATA 6 Gb/s 64MB Cache 3.5 Inch

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Western Digital #ad - Please purchase mounting hardware and cables separately if necessary. Package includes a hard drive only - no screws, cables, manuals included. Enhanced reliability with 3D Active Balance Plus and error recovery prevention with NASware 3. 2. Extended drive testing to ensure each drive for extended reliable operation. 5-year manufacturer limited warranty. Most extensive NAS partner compatibility-testing list available.
BrandWestern Digital #ad
ManufacturerWestern Digital #ad
Height1 Inches
Length5.8 Inches
Weight1.66 Pounds
Width4 Inches
Part NumberWD4001FFSX
ModelWD4001FFSX
Warranty5-year manufacturer limited warranty

6. Western Digital

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WD40EFRX Renewed, WD Red 4TB NAS Hard Disk Drive, 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch

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Western Digital #ad - 3-year manufacturer's limited warranty. Supports up to 180 tb/yr workload rate* |*workload rate is defined as the amount of user data transferred to or from the hard drive. Workload rate will vary depending on your hardware and software components and configurations. Small and home office NAS systems in a 24/7 environment. Specifically designed for use in NAS systems with up to 8 bays. Workload rate is annualized TB transferred times 8760 / recorded power-on hours. Nasware firmware for compatibility.
BrandWestern Digital #ad
ManufacturerWestern Digital #ad
Height1 Inches
Length5.8 Inches
Width4 Inches
Part NumberWD40EFRX
ModelWD40EFRX
Warranty90 days limited warranty

7. Seagate

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Seagate IronWolf 4TB NAS Internal Hard Drive HDD – CMR 3.5 Inch SATA 6Gb/s 5900 RPM 64MB Cache for RAID Network Attached Storage – Frustration Free Packaging ST4000VN008

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Seagate #ad - Easily monitor the health of drives using the integrated IronWolf Health Management system and enjoy long term reliability with 1M hours MTBF. Purpose built for nas enclosures, increased file sharing performance, no lags or down time, little to no noise/vibration, ironwolf delivers less wear and tear, and much more. Store more and work faster with a NAS optimized hard drive providing 4TB and cache of up to 64MB. Ironwolf internal hard drives are the ideal solution for up to 8 bay, multi user NAS environments craving powerhouse performance.
BrandSeagate #ad
ManufacturerSeagate Bare Drives #ad
Height1.03 Inches
Length5.79 Inches
Weight1.35 Pounds
Width4.01 Inches
Part NumberST4000VN008
Model‎‎ST4000VNZ08
Warranty3-year limited

8. Western Digital

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WDBPKJ0040BRD-WESN, USB 3.0, WD 4TB My Passport Portable External Hard Drive HDD, USB 2.0 Compatible, Red

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Western Digital #ad - User account registration may be required. 3-year limited warranty. Terms and conditions apply. Software for device management and backup with password protection. Download and installation required. Slim Design. 256-bit aes hardware encryption. Superspeed usb port 5Gbps; USB 2. 0 compatible.
BrandWestern Digital #ad
ManufacturerWD #ad
Height0.75 Inches
Length4.22 Inches
Weight0.46 Pounds
Width2.95 Inches
Part NumberWDBPKJ0040BRD-WESN
ModelWDBPKJ0040BRD-WESN
Warranty3-year manufacturer's limited warranty

9. Western Digital

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Gen3 PCIe, Up to 3,400 MB/s, WDS400T1R0C, M.2 2280, Western Digital 4TB WD Red SN700 NVMe Internal Solid State Drive SSD for NAS Devices

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Western Digital #ad - Purpose-built and tested to be compatible with popular NAS systems. Tame tough projects like virtualization and collaborative editing. Scale your nas device with huge capacities up to 4TB*. 1gb = 1 billion bytes and 1tb = one trillion bytes. Actual user capacity may be less, depending on operating environment. Robust system responsiveness and exceptional I/O performance. Perfect for multitasking applications with multiple users. Tackle nas workloads with exceptional reliability and endurance.
BrandWestern Digital #ad
ManufacturerWestern Digital Technologies, Inc. #ad
Height0.09 Inches
Length3.15 Inches
Weight0.02 Pounds
Width0.87 Inches
Part NumberWDS400T1R0C
ModelWDS400T1R0C
Warranty5 year manfacturer limited warranty