3 NAS drives tracked from $52.70/TB. Prices updated about once a day.
| Buy | Details | ||||||
|---|---|---|---|---|---|---|---|
| $52.70 Lowest $/TB | WD Red Legacy 2TB WD20EFRX WD20EFRX | 2TB SATA-6G | Not sourced | $105.39 | Refurb | Buy on Amazon | |
Part number:WD20EFRX RPM:— Cache:— Sector:— Workload:— DWPD:— Form factor:3.5" Series:WD Red Legacy ASIN:B008JJLZ7G Warranty:not stated by a source This offer, in its own words (the seller's note is verbatim): This offer: sold by Multi-Com Computers (All Serial Numbers Recorded) · Amazon says Used / LikeNew | |||||||
| $79.05 ↓ vs 30d avg | WD Red Legacy 2TB WD20EFRX WD20EFRX | 2TB SATA-6G | Not sourced | $158.10 | New | Buy on Amazon | |
Part number:WD20EFRX RPM:— Cache:— Sector:— Workload:— DWPD:— Form factor:3.5" Series:WD Red Legacy ASIN:B008JJLZ7G Warranty:not stated by a source This offer, in its own words (the seller's note is verbatim): This offer: sold by IT Electronix · Amazon says New / Unknown | |||||||
| $109.95 ~ 30d avg | WD Red 2TB WD20EFAX WD20EFAX | 2TB SATA-6G | SMR | $219.90 | New | Buy on Amazon | |
Part number:WD20EFAX RPM:5400 Cache:256MB Sector:— Workload:180TB/yr DWPD:— Form factor:3.5" Series:WD Red ASIN:B07PGWXQCM This offer, in its own words (the seller's note is verbatim): This offer: sold by Nationwide Tech Biz · Amazon says New / Unknown | |||||||
One 2TB NAS drive, in decimal units (1TB = 1,000GB), before file-system and RAID overhead. Each line is a division you can redo; the per-file sizes are our assumptions and say so.
Security cameras, recording continuously: 57 camera-days - 8 cameras for 7 days. The arithmetic: 3.2 Mbps ÷ 8 = 0.4 MB/s × 86,400 s = 34.56 GB per camera-day; 2,000 GB ÷ 34.56 = 57 camera-days. The bitrate is WD's reference figure for one stream (single stream, 1080p, h.265, 25fps), from WD Purple / WD Purple Pro data sheets (footnote 3); the 8-camera count is our example. A camera set to a higher bitrate fills the drive proportionally faster.
Guides for this capacity: barracuda 2tb for ps4 · ironwolf pro 30tb vs 32tb · ironwolf pro 32tb vs exos 32tb · ironwolf pro 32tb vs skyhawk ai 32tb · ironwolf pro 32tb vs wd red pro 26tb · skyhawk ai 32tb vs wd purple pro 26tb · skyhawk ai 32tb vs exos 32tb · skyhawk ai 32tb vs 24tb · the HDD price forecast · fill a NAS at today's prices
Every listing we track at this size - 4 product pages, including ones with no current offer. Out-of-stock pages carry specs and in-stock alternatives, never a stale price.
We can currently price 3 in-stock 2TB NAS drives from WD. The best rate is $52.70 per terabyte, against a $79.05 median across the same capacity - a spread worth noticing, because at this size the gap between the cheapest listing and the middle of the market is real money rather than rounding. The lowest ticket price on a single drive is $105.
The listings split 2 new and 1 recertified, and for a NAS that distinction carries more weight than it does in a desktop. An array runs its drives continuously, so the warranty behind each one is a live concern rather than a formality - new carries the manufacturer's, recertified carries a reseller's, and the discount is the compensation for that difference. Our recertified guidance covers what to check before a drive goes into a pool.
A NAS buyer is choosing a configuration rather than a drive, and the number that decides it is usable capacity after parity. At 2TB per drive that works out as follows, before filesystem overhead and before you leave the headroom a pool needs to stay healthy:
Those totals are drives only. The enclosure, the memory and the drive bays you leave empty for a future expansion are separate costs, and the last of those is the one people forget: filling every bay on day one means the next upgrade is a full replacement rather than an addition. Our RAID planner works through the configurations properly, and replacing drives with larger ones covers the upgrade path when you get there.
1 of the in-stock listings at this capacity is shingled, and 0 are conventional. That matters here more than anywhere else on the site: an SMR drive in an array that has to rebuild can take days or fail the rebuild, because overlapping tracks force rewrites the controller did not ask for. The recording column on every row above is badged for exactly this reason, and our model resolver answers it for any drive by part number. 2 further listings have no recording technology recorded, and those render as unverified rather than assumed.
Warranty terms in stock run 3 years, and workload ratings run 180TB/year. That rating is the manufacturer's statement about sustained annual writes, and a NAS serving a household rarely approaches it - it matters when the array is a backup target or a surveillance recorder rather than a media library.
At 2TB rebuild windows are short enough that single parity remains defensible in a small array, which is the main practical advantage this rung has over the larger ones. The trade is the opposite one: more drives for the same total capacity means more bays consumed, more power drawn, and more units that can fail.
The general rule is that cost per terabyte improves as you go up the ladder until it does not, and where it stops improving moves with the market rather than sitting at a fixed capacity. Comparing the live rate on this page against the neighbouring rungs is the only reliable way to find that point on the day you are buying.
The cheapest in-stock 2TB NAS drive we track works out at $52.70 per terabyte. Prices refresh about once a day, so the table above is the current answer rather than this sentence.
6TB in RAID 5, 4TB in RAID 6, and 4TB in RAID 10, before filesystem overhead. RAID 6 costs you one more drive of capacity and buys the ability to survive a second failure during a rebuild.
Both are in stock at this capacity right now: 1 shingled and the rest conventional, badged per row. For an array you want CMR — a shingled drive can make a rebuild take days or fail it outright.
They are widely used for exactly this, but the warranty comes from a reseller rather than the manufacturer, and drives bought together from one batch can age together. Verify on arrival rather than on the listing, and consider mixing sources across the array.
Going up a rung usually improves cost per terabyte, but only up to a point that moves with the market. Compare the live rate here against the neighbouring capacities before deciding — at 2TB the advantage you have is shorter rebuilds.