WD Red 4TB
The WD Red 4TB costs $248.70 right now, or $62.18/TB. The 6TB is cheaper per terabyte at $55.00/TB. Stepping up to the 6TB costs $81.29 more. The maker rates it for about 493 GB read or written a day.
Prices update daily and may differ at the retailer. This page contains affiliate links.
Where to buy the WD Red 4TB
Every in-stock offer we track, cheapest first.
- Amazon$248.70
Price history
How the lowest price has moved since we started tracking it.
Not enough price history yet for the WD Red 4TB. We record prices daily, so a chart appears once there are a few days to show.
Specifications
Drive
- Capacity
- 4TB
- Form factor
- 3.5"
- Spindle speed
- 5,400 RPM
- Recording
- SMR
- Cache
- 256 MB
Shingled recording: sustained writes and RAID rebuilds can slow sharply. Avoid for NAS arrays.
Rated for
- Use class
- NAS
- Bays
- Up to 8
- Workload
- 180 TB/year
- MTBF
- 1 million hours
- Warranty
- 3 years
That is about 493 GB read or written a day, far more than a desktop writes.
Noise and power
- Idle noise
- 23 dB
- Seek noise
- 27 dB
- Idle power
- 3.1 W
- Operating power
- 4.8 W
Identity
- Part number
- WD40EFAX
Quality score
How we score →Scored from recording type (CMR or SMR), workload rating, warranty, measured failure rate where Backblaze covers the model, spindle speed, MTBF and cache. Use class and size filter; they never score.
Value weighs the score against the price, compared with other 4TB hard drives: this drive costs $62.18/TB against a typical $48.75/TB. At a typical price, value equals the score. Cheaper raises it and dearer lowers it, but price counts for less than quality.
A factor we hold no value for scores zero rather than being skipped, so a drive we know little about never outranks a fully documented one. A low score with low confidence means undocumented, not bad. This is a specification index, not a benchmark, and it only compares hard drives with each other.
See every capacity of the WD Red on one page, or compare it with every other drive on the Hard Drives table. For what a hard drive gives up against an SSD, see SSD vs HDD.
Affiliate disclosure: Some links on this page are affiliate links — MaxMyBuild may earn a commission at no extra cost to you if you buy through them. As an Amazon Associate, MaxMyBuild earns from qualifying purchases. For Amazon, current price and availability are shown on the Amazon product page; product prices and availability are accurate as of the date and time of purchase and are subject to change. Prices shown for other retailers are approximate and may differ at checkout. “Search” links are non-affiliate and provided for convenience only.