Seagate IronWolf Pro ST18000NE000 - hard drive - 18 TB - SATA 6Gb/s - ST18000NE000 - Internal Hard Drives - CDW.com
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Synology 18TB HAT5310 SATA 6Gb s 3.5" Internal Hard Drive (HAT5310-18T)
WP Arsenal 18TB SAS 12Gb/s 7200RPM 3.5" DAS HDD – Water Panther
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Western Digital Reveals 18 TB DC HC550 'EAMR' Hard Drive
Amazon.com: Seagate Skyhawk AI 18TB Video Internal Hard Drive HDD – 3.5 Inch SATA 6Gb/s 256MB Cache for DVR NVR Security Camera System with in-house Rescue Services - Frustration Free Packaging (ST18000VE002) :
WD easystore 18TB External USB 3.0 Hard Drive Black WDBAMA0180HBK-NESN - Best Buy
Purple 18TB SATA III 3.5" Internal Surveillance HDD, 7200 RPM - Walmart.com