
Seagate Exos X18 ST18000NM000J 18TB 7.2K 6G SATA 3.5" HDD (Used, Tested)
Seagate
Same-day dispatch on orders before 3PM Mountain
SATA hard drives work almost anywhere: a motherboard SATA port, a NAS bay, a USB dock or a SAS controller. That makes enterprise SATA drives such as Seagate Exos, WD Ultrastar and WD Gold a common choice for homelab servers, TrueNAS and Unraid builds, and small business file servers. They run at 6Gb/s, which is more than a single spinning disk can use, so interface speed is rarely the bottleneck. Enterprise SATA models are built for continuous duty and carry error recovery settings suited to RAID, which desktop drives often lack. Two things to check: some enterprise SATA drives support the power disable feature, which can stop them spinning up on older power supplies, and drives with high power-on hours trade price against remaining rated life. We read the hours from every drive and list them, and every used drive passes SMART health and an extended self-test before it ships.
9 in stock · Tested in-house · 30-day returns

Seagate



Seagate

Seagate

Western Digital

Seagate

Seagate

WD
Some enterprise SATA drives support the power disable feature on pin 3 of the power connector. Older power supplies and some backplanes hold that pin high, which keeps the drive off. A Molex to SATA power adapter, or a power cable without the 3.3V line, avoids it.
For a single spinning disk, not in practice. Both interfaces are faster than the platters can deliver. SAS adds dual ports and deeper command handling that matter in shared enclosures; for a NAS or a single server, SATA is usually the simpler choice.
We read power-on hours from the drive’s own SMART counter. On certified listings they are printed on the certificate in the box and shown on the unit’s public test report. The counter stays on the drive, so you can read it yourself on arrival with any SMART tool.
Used drives carry a 90-day warranty, and certified tiers carry up to 2 years; the exact term is on each listing. New sealed drives keep the manufacturer warranty. Every order also has 30-day returns.