Best 4TB NAS hard drives
We track 11 currently-sold 4TB NAS drives from WD, Seagate, Toshiba and Synology, ranked by real-world failure rate. None have large-scale Backblaze failure data yet, so they are ranked on manufacturer class and specs. Best value is the WD WD40EZAX at about $45.00/TB.
* Shown as a full table on desktop, and as cards on tablet and phone.
| Drive | Capacity | Tech | Class | Interface | AFR | $/TB | Price | |
|---|---|---|---|---|---|---|---|---|
| 1 |
WD40EFPX WD Red Plus
|
4 TB | CMR | NAS | SATA | - | $87.50 | $350 |
| 2 |
WD4005FFBX WD Red Pro
|
4 TB | CMR | NAS-Pro | SATA | - | $103.61 | $414 |
| 3 |
WD4004FRYZ WD Gold
|
4 TB | CMR | Enterprise | SATA | - | - | - |
| 4 |
ST4000VN006 Seagate IronWolf
|
4 TB | CMR | NAS | SATA | - | $57.83 | $231 |
| 5 |
ST4000NT001 Seagate IronWolf Pro
|
4 TB | CMR | NAS-Pro | SATA | - | $60.00 | $240 |
| 6 |
ST4000VX016 Seagate SkyHawk
|
4 TB | CMR | Surveillance | SATA | - | $58.75 | $235 |
| 7 |
HDWG440 Toshiba N300
|
4 TB | CMR | NAS | SATA | - | $82.07 | $328 |
| 8 |
HDWR440 Toshiba X300
|
4 TB | CMR | Desktop | SATA | - | - | - |
| 9 |
WD40EZAX WD Blue
|
4 TB | CMR | Desktop | SATA | - | $45.00 | $180 |
| 10 |
HAT3300-4T Synology Plus Series
|
4 TB | CMR | NAS | SATA | - | - | - |
| 11 |
HAT5320-4T Synology Enterprise Series
|
4 TB | CMR | Enterprise | SATA | - | - | - |
WD40EFPX
CMR
WD Red Plus
Capacity4 TB
ClassNAS
Failure rate-
Price / TB$87.50
$350best live price
View on Amazon
WD4005FFBX
CMR
WD Red Pro
Capacity4 TB
ClassNAS-Pro
Failure rate-
Price / TB$103.61
$414best live price
View on Amazon
WD4004FRYZ
CMR
WD Gold
Capacity4 TB
ClassEnterprise
Failure rate-
Price / TB-
ST4000VN006
CMR
Seagate IronWolf
Capacity4 TB
ClassNAS
Failure rate-
Price / TB$57.83
$231best live price
View on Amazon
ST4000NT001
CMR
Seagate IronWolf Pro
Capacity4 TB
ClassNAS-Pro
Failure rate-
Price / TB$60.00
$240best live price
View on Amazon
ST4000VX016
CMR
Seagate SkyHawk
Capacity4 TB
ClassSurveillance
Failure rate-
Price / TB$58.75
$235best live price
View on Amazon
HDWG440
CMR
Toshiba N300
Capacity4 TB
ClassNAS
Failure rate-
Price / TB$82.07
$328best live price
View on Amazon
HDWR440
CMR
Toshiba X300
Capacity4 TB
ClassDesktop
Failure rate-
Price / TB-
WD40EZAX
CMR
WD Blue
Capacity4 TB
ClassDesktop
Failure rate-
Price / TB$45.00
$180best live price
View on Amazon
HAT3300-4T
CMR
Synology Plus Series
Capacity4 TB
ClassNAS
Failure rate-
Price / TB-
HAT5320-4T
CMR
Synology Enterprise Series
Capacity4 TB
ClassEnterprise
Failure rate-
Price / TB-
Ranked by measured failure rate (Backblaze AFR). $/TB uses the cheapest live price where available.
Every drive here is a CMR (RAID-safe) 4TB model in current production. For a NAS or RAID array, pick the lowest failure rate you can afford; enterprise drives (Exos, Ultrastar, MG) trade some noise and power draw for the longest workload ratings. See how to choose a NAS drive for the full rundown.
Frequently asked questions
- What is the most reliable 4TB NAS drive?
- None of the 4TB drives have large-scale Backblaze failure data yet; choose by manufacturer class and warranty.
- Are 4TB NAS drives CMR or SMR?
- Every 4TB drive we recommend for NAS use is CMR (conventional recording), the RAID-safe choice. We exclude SMR drives from NAS picks.