Seagate Exos X20 20TB
Twenty terabytes per bay: the Exos X20's 10-platter helium stack is the density answer for capacity-bound racks — hyperscale-proven, CMR, rated 550TB per year. When rack slots are scarcer than budget, 20TB per slot is the whole argument. New, recertified, and graded pulls ship from Hong Kong.
Fully Tested & Documented · Hong Kong Warehouse Stock · Worldwide Shipping 3–7 Days · 1-Year Warranty
Hardware Gallery
The Exos X20 20TB, Up Close
Exos X20 20TB — Label Verified
Label reads 20TB Exos X20, SATA, Seagate Secure, DOM Nov 2023. Every drive we ship is photographed and SMART-logged before packing; the ST20000NM002H is the standard SATA 512e SKU.
Sealed Channel Stock
Factory-sealed unit in its anti-static bag — the Exos X20 20TB SATA label visible through the packaging. Sealed stock ships unopened; graded pulls are opened only for our test bench.
285
MB/s sustained transfer
550
TB/year workload rating
2.5M
hours MTBF
10
platter helium design
Key Specifications
| Component | Specification |
|---|---|
| Model | Seagate Exos X20 20TB (ST20000NM002H, SATA) |
| Form Factor | 3.5-inch, 10-platter helium-sealed |
| Interface | SATA 6Gb/s, 512e (4Kn and SAS 12Gb/s variants exist) |
| Recording | CMR, 7200 rpm, 256MB cache |
| Sustained Transfer | Up to 285 MB/s |
| Workload Rating | 550 TB/year |
| Reliability | 2.5M hours MTBF, 5-year class |
| Power / Security | PowerBalance, Seagate Secure (ISE/SED options) |
The X20 20TB is the density play: 25% more capacity per bay than the Exos X18 16TB on the same power envelope. Its direct rival is WD's Ultrastar HC560 20TB (OptiNAND) — compare both in the FAQ below. Newer 22TB+ Exos models exist but clear at a steep premium in 2026; the X20 is where price-per-TB and availability still balance. See the full enterprise storage range.
Transparent Pricing
2026 Reference Pricing by Configuration
Tracked Sep 7, 2026 — seven asking-price data points across European secondary channels, Hong Kong retail, and UK aggregators. The used/open-box tier is unusually deep for this model — hyperscaler refresh cycles are feeding supply.
Used / Open Box
$421-$600
eBay.de used EUR 390 (approx $421); Newegg's eBay.de storefront EUR 538 (approx $581); eBay US open-box $599.99 (ST20000NM002D SAS variant). Verify hours and warranty terms at this tier.
Hong Kong Retail New
$628-$897
2000Fun HK$4,900 (approx $628, boxed); Pegasus HK$6,999 (approx $897, 5-year local warranty). HK remains the cheapest new-stock channel we track for this model.
UK Retail New
$674-$1,192
eBay.de napomarket EUR 624 (approx $674); PriceRunner UK aggregates from £938.39 (approx $1,192). Western retail carries a large premium this cycle.
Asking prices, not transaction prices — volume deals typically close 5-15% below asking. Small sample per tier (n<5): indicative only. Sources: ebay.de, ebay.com, openshop.com.hk, shop.pegasus.hk, pricerunner.com. Collected Sep 7, 2026. Full dataset: Used Server Price Index.
Origin
Hong Kong Warehouse
Free port — full export documentation
Transit
3–7 Days Air Freight
Tracked, insured, worldwide
Warranty
1-Year Warranty
Diagnostic report in every box
Quality Process
What We Test Before an Exos X20 20TB Ships
SMART & Helium Health
Power-on hours, reallocated/pending sectors, and helium integrity read from every drive — hyperscaler pulls often carry 20K+ hours, and we quote that floor openly.
Full-Surface Scan
Every LBA read-verified; on 20TB that is a long burn-in, and drives with slow or grown defects above threshold are rejected.
Firmware & Secure Erase
Firmware checked against Seagate's current release; drives sanitized to NIST 800-88 with certificate available on request.
Acoustic & Vibration Check
Ten-platter stacks are sensitive to bearing wear — spindle noise and seek acoustics are bench-checked before grading.
PN & Interface Verification
Label PN and interface (SATA 002H vs SAS 002D) cross-checked against firmware-reported identity — no surprises at rack time.
Report in the Box
Every unit ships with its per-machine diagnostic report and warranty. Full process: inspection guide.
Frequently Asked Questions
How much does a Seagate Exos X20 20TB cost in 2026?
Used and open-box units run $421-$600, Hong Kong new stock $628-$897, and UK retail up to about $1,192 (seven asking prices tracked Sep 7, 2026 — small samples, indicative only). Hyperscaler refresh cycles have made the used tier unusually deep for this model, which is where the value sits.
What is the difference between the Exos X20 20TB and the Exos X18 16TB?
The X20 moves to a 10-platter stack (from 9) to reach 20TB, sustains 285 vs 270MB/s, and keeps the same 550TB/year rating and 7200rpm spindle. You gain 25% capacity per bay; you pay roughly 20-40% more per drive in 2026 channel pricing. If slots are your constraint, buy X20; if rebuild time and unit cost matter more, the X18 16TB is the safer economic pick.
Exos X20 20TB or WD Ultrastar HC560 20TB — which should I buy?
Both are 20TB, 7200rpm, helium, CMR, 550TB/year nearline drives. The HC560 adds WD's OptiNAND metadata offload and ships in more SATA/SAS SKU variants; the X20 counters with a deeper used market in 2026 and slightly higher sustained transfer (285 vs 269MB/s). In practice both run identically in JBOD and NAS duty — buy on channel price and warranty terms, and we stock both.
What condition are HKCHL Exos X20 drives in?
Factory-sealed new, manufacturer-recertified, and graded used pulls are all available. Every drive ships with its SMART readout (power-on hours, reallocated sectors), a full-surface scan result, NIST 800-88 sanitization on request, and a 1-year warranty. We quote the health floor before you pay.
Can you ship Exos X20 20TB to the US, Europe, or Asia?
Yes — worldwide shipping from our Hong Kong warehouse with full export documentation and anti-static, foam-suspended packing; express air-freight typically arrives in 3-7 days to major markets. For JBOD-scale orders we palletize and combine freight to reduce per-unit cost.
Get a Current Exos X20 20TB Quote
Tell us quantity and condition preference (sealed new, recertified, or graded pull with health floor) — we confirm live stock and ship worldwide from Hong Kong, usually within one business day.
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