Top 10 WD Red 4TB NAS – Internal Hard Drives

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1. Western Digital

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

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Western Digital #ad - Available in capacities ranging from 2-6TB with support for up to 8 bays. Nas systems with daily workloads associated with personal and home office environments and idle time available to perform necessary background operations. 5400rpm performance class. 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. 3-year limited warranty. Nasware firmware for compatibility.
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

2. Western Digital

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

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Western Digital #ad - Workload rate is annualized TB transferred 8760 / recorded power-on hours. 5-year limited warranty. 7200rpm performance class. 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. Available in capacities ranging from 2-14TB with support for up to 24 bays. Enhanced reliability with 3d Active Balance Plus technology and error recovery controls with NASware 3. 0 technology.
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.

3. Western Digital

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Western Digital Red Pro 4TB 3.5-Inch 7200rpm 64MB Cache NAS Hard Drive WD4002FFWX Renewed

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Western Digital #ad - Vibration & Shock protection. Package includes a hard drive only - no screws, cables, manuals included. Extended drive testing to ensure each drive is tested for extended reliable operation. Enhanced reliability with 3D Active Balance Plus and error recovery controls with NASware 3. 0 Please purchase mounting hardware and cables separately if necessary. Available in large capacities with support for 1-16 bays. Ships in wd-certified box for safe transit during shipping.
BrandWestern Digital #ad
ManufacturerWestern Digital Bare Drives #ad
Height1.03 Inches
Length5.79 Inches
Width4 Inches
Part NumberNA
ModelNA
Warranty90 days limited warranty

4. Western Digital

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Western Digital Red Pro 4TB 3.5-Inch 7200rpm 64MB Cache NAS Hard Drive WD4002FFWX

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Western Digital #ad - Ships in wd-certified box for safe transit during shipping. Please purchase mounting hardware and cables separately if necessary. Enhanced reliability with 3D Active Balance Plus and error recovery controls with NASware 3. 0 Vibration & Shock protection. Available in large capacities with support for 1-16 bays. Extended drive testing to ensure each drive is tested for extended reliable operation. Package includes a hard drive only - no screws, cables, manuals included.
BrandWestern Digital #ad
ManufacturerWestern Digital Bare Drives #ad
Height1.03 Inches
Length5.79 Inches
Weight1.58 Pounds
Width4 Inches
Part NumberWD4002FFWX
ModelWD4002FFWX
Warranty5

5. Western Digital

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

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Western Digital #ad - 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. Available in capacities ranging from 1-14TB with support for up to 8 bays. Small or medium business NAS systems in a 24x7 environment. Workload rate will vary depending on your hardware and software components and configurations. Workload rate is annualized TB transferred 8760 / recorded power-on hours. Nasware firmware for compatibility.
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

6. 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 - Ironwolf internal hard drives are the ideal solution for up to 8 bay, multi user NAS environments craving powerhouse performance. Easily monitor the health of drives using the integrated IronWolf Health Management system and enjoy long term reliability with 1M hours MTBF. Store more and work faster with a NAS optimized hard drive providing 4TB and cache of up to 64MB. Purpose built for nas enclosures, no lags or down time, IronWolf delivers less wear and tear, little to no noise/vibration, increased file sharing performance, and much more.
BrandSeagate #ad
ManufacturerSeagate Bare Drives #ad
Height1.03 Inches
Length5.79 Inches
Weight1.35 Pounds
Width4.01 Inches
Part NumberST4000VN008
ModelST4000VN008
Warranty3-year limited

7. Western Digital

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5400 RPM, SATA 6 Gb/s, CMR, 3.5", WD140EFFX, 512 MB Cache, Western Digital 14TB WD Red Plus NAS Internal Hard Drive HDD

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Western Digital #ad - This model uses cmr technology and is being renamed “WD Red Plus” to distinguish it from the current “WD Red” product, which uses SMR technology. Small or medium business NAS systems in a 24x7 environment.

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. 5400rpm performance class. During this transition period, wd red plus devices may be delivered with a ”WD Red” label, but rest assured the device you are receiving will be the CMR-version of WD Red and can be confirmed by the model number. 3-year limited warranty. Nasware firmware for compatibility. Workload rate is annualized TB transferred 8760 / recorded power-on hours. Available in capacities ranging from 1-14TB with support for up to 8 bays.
BrandWestern Digital #ad
ManufacturerWestern Digital #ad
Height4 Inches
Length1.03 Inches
Weight0.11 Pounds
Width5.79 Inches
Part NumberWD140EFFX
ModelWD140EFFX
Warranty3-year manufacturer's limited warranty

8. Western Digital

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

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Western Digital #ad - Automatic backup - easy to use. Superspeed usb-a 3. 0 5gpbs, 2. 0 compatible. Password protection plus 256-bit AES hardware encryption. Wd discovery software for WD Backup, password protection, and drive management. Slim design.
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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WD 4TB Elements Portable External Hard Drive HDD, USB 3.0, Mac, Compatible with PC, PS4 & Xbox, WDBU6Y0040BBK-WESN

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Western Digital #ad - Formatted ntfs for windows 10, Windows 8. 1. Usb 3. 0 and usb 2. 0 compatibility. High capacity. Compatibility may vary depending on user’s hardware configuration and operating system. Reformatting may be required for other operating systems. Fast data transfers. Improve PC performance.
BrandWestern Digital #ad
ManufacturerWestern Digital #ad
Height0.83 Inches
Length4.4 Inches
Weight0.52 Pounds
Width3.2 Inches
Part NumberWDBU6Y0040BBK-WESN
ModelWDBU6Y0040BBK-WESN
Warranty2-year limited

10. Western Digital

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WD101KFBX Old Version, Western Digital 10TB WD Red Pro NAS Internal Hard Drive, 3.5", 7200 RPM Class, CMR, SATA 6 Gb/s, 256 MB Cache

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Western Digital #ad - 0 technology. Available in large capacities with support for 1 to 24 Bays. Vibration and shock protection. Extended drive testing to ensure each drive is tested for extended reliable operation. Enhanced reliability with 3d active Balance Plus technology and error recovery controls with NASware 3.
BrandWestern Digital #ad
ManufacturerWestern Digital Bare Drives #ad
Height1.03 Inches
Length5.79 Inches
Weight1.43 Pounds
Width4 Inches
Part NumberWD101KFBX
ModelWD101KFBX
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 authorized distributor 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 Product is returned to an authorized return center in the region (warranty regions are identified as Canada, U.S.A., Latin America, 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 limited warranty is provided by WD.