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Workload rate is annualized TB transferred 8760 / recorded power-on hours. 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.



Actual user capacity may be less depending on operating environment. Nasware firmware for compatibility. Available in capacities ranging from 1-14tb1 with support for up to 8 bays | 1 1MB = 1 million bytes, 1GB = 1 billion bytes, and 1TB = 1 trillion bytes.
Supports up to 180 tb/yr workload rate2 | 2 workload rate is defined as the amount of user data transferred to or from the hard drive. 3-year limited warranty3 | 3 mtbf specifications are based on a sample population and are estimated by statistical measurements and acceleration algorithms under typical operating conditions: workload of 90TB/year and drive temperature of 40°C.

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1. Seagate
#ad
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
#adSeagate #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.More information #ad
Purpose built for nas enclosures, little to no noise/vibration, no lags or down time, IronWolf delivers less wear and tear, increased file sharing performance, and much more. Store more and work faster with a NAS optimized hard drive providing 4TB and cache of up to 64MB.Brand | Seagate #ad |
Manufacturer | Seagate Bare Drives #ad |
Height | 1.03 Inches |
Length | 5.79 Inches |
Weight | 1.43 Pounds |
Width | 4.01 Inches |
Part Number | ST4000VN008 |
Model | ST4000VN008 |
Warranty | 3-year limited |
More information #ad
2. Western Digital
#ad
WD40EFAX, 256MB Cache, SMR, SATA 6 Gb/s, Western Digital 4TB WD Red NAS Internal Hard Drive HDD, 5400 RPM, 3.5"
#adWestern Digital #ad - 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. Nas systems with daily workloads associated with personal and home office environments and idle time available to perform necessary background operations.More information #ad
Nasware firmware for compatibility. Available in capacities ranging from 2-6TB with support for up to 8 bays. Workload rate is annualized TB transferred 8760 / recorded power-on hours. 3-year limited warranty.Brand | Western Digital #ad |
Manufacturer | Western Digital #ad |
Height | 4 Inches |
Length | 1.03 Inches |
Weight | 1.2 Pounds |
Width | 5.79 Inches |
Part Number | WD40EFAX |
Model | WD40EFAX |
Warranty | 3-year manufacturer's limited warranty |
More information #ad
3. Western Digital
#ad
5400 RPM, CMR, 128 MB Cache, 3.5" -WD40EFZX, SATA 6 Gb/s, Western Digital 4TB WD Red Plus NAS Internal Hard Drive HDD
#adWestern Digital #ad - Workload rate will vary depending on your hardware and software components and configurations. 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.More information #ad
Workload rate is annualized TB transferred 8760 / recorded power-on hours. Nasware firmware for compatibility. Available in capacities ranging from 1-14TB with support for up to 8 bays.Brand | Western Digital #ad |
Manufacturer | Western Digital Technologies, Inc. #ad |
Height | 1.03 Inches |
Length | 5.79 Inches |
Weight | 1.32 Pounds |
Width | 4 Inches |
Part Number | WD40EFZX |
Model | WD40EFZX |
Warranty | 3 year limited warranty |
More information #ad
4. Western Digital
#ad
3.5", 7200 RPM, WD4003FFBX, CMR, SATA 6 Gb/s, 256 MB Cache, Western Digital 4TB WD Red Pro NAS Internal Hard Drive HDD
#adWestern Digital #ad - Workload rate will vary depending on your hardware and software components and configurations. 5-year limited warranty3 | 3 See official Western Digital website for regional specific warranty details.Workload rate is annualized TB transferred 8760 / recorded power-on hours. 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.
More information #ad
0 technology. Actual user capacity may be less depending on operating environment. Available in capacities ranging from 2 to 22tb1 with support for naS systems with up to 24 bays | 1 1GB = 1 billion bytes and 1TB = 1 trillion bytes. Supports up to 300tb/yr workload rate2 | 2 workload rate is defined as the amount of user data transferred to or from the hard drive.Brand | Western Digital #ad |
Manufacturer | Western Digital #ad |
Height | 1.03 Inches |
Length | 5.79 Inches |
Weight | 1.58 Pounds |
Width | 4 Inches |
Part Number | WD4003FFBX |
Model | WD4003FFBX |
Warranty | Western 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. |
More information #ad
5. Toshiba
#ad
Toshiba N300 4TB NAS 3.5-Inch Internal Hard Drive, CMR SATA 6 GB/s 7200 RPM 256 MB Cache, HDWG440XZSTA
#adToshiba #ad - Built for small office and home office NAS. Integrated RV sensors to compensate for rotational vibrations. Designed for 24/7 operation9. High performance 7200 RPM drive with large cache size. High reliability with up to 180TB/year workload rating6.More information #ad
Brand | Toshiba #ad |
Manufacturer | Toshiba #ad |
Height | 1.03 Inches |
Length | 5.79 Inches |
Weight | 1.53 Pounds |
Width | 4 Inches |
Part Number | HDWG440XZSTA |
Model | HDWG440XZSTA |
Warranty | 3 year limited manufacturer |
More information #ad
6. Seagate
#ad
Seagate 4TB IronWolf NAS SATA Hard Drive 6Gb/s 256MB Cache 3.5-Inch Internal Hard Drive for NAS Servers, Personal Cloud Storage ST4000VN008
#adSeagate #ad - Higher capacity drives deliver up to 7200RPM spin speed along with sustained data rates up to 214MB/s and burst data rates of 6Gb/s. Performance hard drive 2tb/4tb/6tb/8tB/10TB/12TB/14TB.More information #ad
Compatible with 1- to 8-bay network attached storage NAS servers, home media server, personal cloud storage device. 3-year product warranty and 180TB/year workload limit. Included in box: Seagate IronWolf Drive.Brand | Seagate #ad |
Manufacturer | SEAGATE #ad |
Height | 0.04 Inches |
Length | 0.23 Inches |
Weight | 1.34 Pounds |
Width | 0.16 Inches |
Part Number | ST4000VN008 |
Model | ST4000VN008 |
More information #ad
7. Western Digital
#ad
256 MB Cache, SATA 6 Gb/s, Western Digital 4TB WD Red Plus NAS Internal Hard Drive HDD, 5400 RPM, CMR, 3.5" -WD40EFPX
#adWestern Digital #ad - Workload rate will vary depending on your hardware and software components and configurations. Not all products may be available in all regions of the world. Derating of mtbf will occur above these parameters, up to 65°C drive temperature.Actual user capacity may be less depending on operating environment. Nasware firmware for compatibility. Available in capacities ranging from 1-14tb1 with support for up to 8 bays | 1 1MB = 1 million bytes, 1GB = 1 billion bytes, and 1TB = 1 trillion bytes.
More information #ad
Built for small or medium business NAS systems in a 24/7 environment. Mtbf does not predict an individual drive’s reliability and does not constitute a warranty. Workload rate is annualized TB transferred 8760 / recorded power-on hours. Supports up to 180 tb/yr workload rate2 | 2 workload rate is defined as the amount of user data transferred to or from the hard drive. 3-year limited warranty3 | 3 mtbf specifications are based on a sample population and are estimated by statistical measurements and acceleration algorithms under typical operating conditions: workload of 90TB/year and drive temperature of 40°C.
Brand | Western Digital #ad |
Manufacturer | Western Digital Technologies, Inc. #ad |
Height | 1.03 Inches |
Length | 5.79 Inches |
Weight | 1.5 Pounds |
Width | 4 Inches |
Part Number | WD40EFPX |
Model | WD40EFPX |
Warranty | 3 years limited warranty |
More information #ad
8. MDD MAXDIGITALDATA
#ad
MDD, 5 Year Warranty Renewed, Desktop PC, HGST Ultrastar HUS724040ALE641 4TB 7200RPM 64MB Cache SATA 6Gb/s 3.5-inch Enterprise Hard Drive for NAS, Surveillance Storage
#adMDD MAXDIGITALDATA #ad - Passed factory diagnostic software + re-certified by state-of-the-art mdd testing software - full "Sector-by-Sector" test to ensure best HDD quality! ZERO Bad Sectors! Bare drive only, single pack, no screws, cables or accessories included -Friendly Reminder- Please FORMAT HDD on system in order to be detected/shows on system.5
More information #ad
5 years warranty from reseller, Worry Free Return! 100% Full Refund. 4tb capacity, sata iii 6. 0gb/s, 3. 5" internal hard drive, 7200rpm rotation speed, 64mb cache, SATA III 6.0gb/s, heavy duty, enterprise Grade, Designed for 24/7 reliable operation. Works for pc, mac, cctv dvr, NAS, raid, Surveillance Storage.Brand | MDD MAXDIGITALDATA #ad |
Manufacturer | MDD MAXDIGITALDATA #ad |
Height | 1 Inches |
Length | 5.8 Inches |
Width | 4 Inches |
Part Number | HUS724040ALE641-MDD |
Model | HUS724040ALE641-MDD |
Warranty | 5 Year Warranty from Reseller |
More information #ad
9. HGST
#ad
RAID, NAS, CCTV DVR Renewed w/1 Year Warranty, HGST Ultrastar 7K4000 0F17719 4TB 64MB Cache 7200RPM SATA III 6.0Gb/s 3.5" Internal Desktop Hard Drive for PC, Mac
#adHGST #ad - 4tb capacity, 7200rpm rotation speed, 64mb cache, enterprise grade, SATA III 6.0gb/s, heavy Duty. 3. 5" internal hard drive, sata iii 6. 0gb/s, designed for 24/7 reliable operation.More information #ad
Passed factory diagnostic software + re-certified by state-of-the-Art software - Full "Sector-by-Sector" test to ensure best HDD quality! ZERO Bad Sectors! Worry free return! 100% Full Refund. Works for pc, nas, raid, mac, CCTV DVR.Brand | HGST #ad |
Manufacturer | HGST #ad |
Height | 1 Inches |
Length | 5.8 Inches |
Width | 4 Inches |
Part Number | HUS724040ALE641-DVR |
Model | HUS724040ALE641-DVR |
More information #ad
10. HGST
#ad
5 Year Warranty Renewed, Surveillance Storage, HGST Ultrastar 7K4000 4TB 64MB Cache 7200RPM SATA 6.0Gb/s 3.5inch Internal Hard Drive for NAS, Desktop PC/Mac, CCTV DVR
#adHGST #ad - 4tb capacity, 7200rpm rotation speed, sata iii 6. 0gb/s, 64mb cache, enterprise Grade, Heavy Duty.100% tested & passed hgst diagnostic software, raid, zero Bad Sectors! Works for servers, surveillance system, Desktop PC/Mac, nas, CCTV DVR.More information #ad
Bare drive only, single pack, no screws, cables or accessories included -Friendly Reminder- Please FORMAT HDD on system in order to be detected/shows on system. 5 years warranty from reseller, Worry Free Return! 100% Full Refund.Brand | HGST #ad |
Manufacturer | HGST #ad |
Height | 1 Inches |
Length | 5.8 Inches |
Width | 4 Inches |
Part Number | HUS724040ALE641/CR/5YR |
Model | HUS724040ALE641/CR/5YR |
Warranty | 5 years warranty from reseller |
More information #ad