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HDD · SAS

Seagate Exos X18 18TB

part number ST18000NM004J

Capacity
18TB
Connection
SAS
Hardware
3.5" HDD · CMR
Best available offer · 3 listings
$364.78
$20.27 / TB

Total includes shipping

UsedBuy on eBay →

prices last checked 2026-10-16 14:07 UTC

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deal rating
Not rated: we cannot confirm this listing is the exact model

We only put pumpkins beside a listing we can vouch for as this exact model, because a deal verdict on the wrong drive is worse than none · five pumpkins is an amazing, off-the-chart deal · how it’s scored

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price history
Lowest / TB
$16.67
Median / TB
$24.16
Current / TB
$20.27
$14.19$21.64$29.102026-09-112026-10-16
2026-10-16$20.27 / TB
all listings
Marketplace listings for this drive
SourceConditionPriceShip$/TB
ebayUsed$359.00$5.78$20.27Buy →
ebayNew$583.00free$32.39Buy →
ebayRefurb$599.00free$33.28Buy →
head to head
vs Dell Enterprise Nearline 18TB→vs Toshiba MG09 18TB→vs WD Ultrastar DC HC550 18TB→
cheaper per terabyte

Same interface and drive class, less money per terabyte.

Hitachi Ultrastar 7K6000 2TB$7.50/TBSeagate Constellation ES.3 4TB$7.50/TBHGST Ultrastar 7K4000 3TB$8.33/TBToshiba MG04 2TB$8.49/TBHGST Ultrastar 7K4000 2TB$8.97/TBHGST Ultrastar 7K4000 4TB$9.00/TB
related drives
Seagate Exos X18 16TB SASsame model, other capacity$24.94/TBSeagate Exos X18 14TB SASsame model, other capacity$35.12/TBSeagate Exos X18 12TB SASsame model, other capacity$27.42/TBWD Ultrastar DC HC550 18TB SASother 18TB SAS drive$23.06/TBSeagate Exos X20 18TB SASother 18TB SAS drive$36.06/TB
unbranded alternative

Sellers listing the same capacity, interface and form factor without naming a manufacturer or model — could be this drive, could be a different one.

Unbranded 18TB SAS — model not stated by sellerfrom $55.28/TB