Best 20TB storage, ranked by $/TB

SSD · NVMe · hard drive · external · NAS · SAS · microSD, all on Amazon.com

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Updated 20 minutes ago

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20TB drives are high-capacity territory, almost always 3.5-inch hard drives for NAS, servers and bulk archives. At this size the price per terabyte is usually at its lowest, which is why 20TB and the 14-18TB band around it are the value sweet spot for mass storage. This table ranks every 20TB drive we track on Amazon.com by live price per terabyte, so you can find the cheapest capacity per dollar.

Best price per TB

$21.76

Products tracked

Prices updated

20 minutes ago

TypeForm factorInterfaceMin capacityConditionBrand

Price per

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37 products

Product	Capacity	Price	$ / TB	Tech	Prime	Buy
Seagate Skyhawk AI 20TB Video Internal Hard Drive HDD – 3.5 Inch SATA 6Gb/s 512MB Cache for DVR NVR Security Camera System with in-House Rescue Services (ST20000VE003)Used	20 TB	$435.12	$21.76	HDD · SATA	Prime	Buy on Amazon
Western Digital WD Ultrastar 20TB Internal Hard Drive WD200EDGZ 3.5 Inch HDD SATA 6Gb/s 7200RPM 512MB Cache (Renewed)Renewed	20 TB	$569.99	$28.50	HDD · SATA	-	Buy on Amazon
Western Digital Ultrastar DC HC560 WUH722020ALE604 0F38761 20TB 7.2K RPM CMR SATA 6Gb/s 512e 3.5in Enterprise HDDUsed	20 TB	$630.00	$31.50	HDD · SATA	-	Buy on Amazon
MDD MAXDIGITALDATA MDD 20TB 7200 RPM 256MB Cache 3.5-inch Internal Enterprise Hard Drive - 5 Years Warranty (Renewed)Renewed	20 TB	$639.99	$32.00	HDD · SATA	-	Buy on Amazon
Seagate Exos ST20000NM004C 20TB 7200RPM 512e SATA 6Gb/s 512MB Cache CMR 3.5-Inch Enterprise Hard Drive (Renewed)Renewed	20 TB	$649.99	$32.50	HDD · SATA	-	Buy on Amazon
MDD MAXDIGITALDATA (MD20TSATA25672NAS 20TB 7200RPM 256MB Cache SATA 6.0Gb/s 3.5inch Internal NAS Hard Drive (Renewed)Renewed	20 TB	$649.99	$32.50	HDD · SATA	-	Buy on Amazon
MDD (MDD20TSATA25672DVR) 20TB 7200RPM 256MB Cache SATA 6.0Gb/s 3.5-Inch Internal Surveillance Hard Drive - 3 Years Warranty (Renewed)Renewed	20 TB	$649.99	$32.50	HDD · SATA	-	Buy on Amazon
MDD MAXDIGITALDATA 20TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5'' Internal Hard Drive (for NAS, Network Storage) - 5 Years Warranty	20 TB	$649.99	$32.50	HDD · SATA	-	Buy on Amazon
Seagate One Touch 20TB External Hard Drive Desktop HDD - USB-C Compatible with Most Windows and macOS, Rescue Recovery (STNB20000400)	20 TB	$656.34	$32.82	HDD · USB	Prime	Buy on Amazon
Western Digital Ultrastar DC HC560 WUH722020BLE601 0F38781 20TB 7200 RPM SATA 6Gb/s 512e 512MB Cache Power Disable 3.5in Enterprise Hard Drive (Renewed)Renewed	20 TB	$679.00	$33.95	HDD · SATA	-	Buy on Amazon
LaCie d2 Professional 20TB External Hard Drive Desktop HDD – USB-C USB 3.1 Gen 2, 7200 RPM Enterprise Class Drives, for Mac and PC Desktop, 1mo Adobe CC All Apps Plan, Rescue Services (STHA20000800)	20 TB	$682.32	$34.12	HDD · USB	-	Buy on Amazon
Western Digital WD Ultrastar HC560 WUH722020BLE6L4 20TB 7200RPM 3.5"" SE SATA HDD 0F38785 (Renewed)Renewed	20 TB	$689.00	$34.45	HDD · SATA	-	Buy on Amazon
Seagate Exos X24 20TB Enterprise Hard Drive HDD SATA 6Gb/s 512MB Cache 7200 RPM 512e CMR Helium Sealed 3.5in Hard Drive ST20000NM000H (Renewed)Renewed	20 TB	$689.99	$34.50	HDD · SATA	-	Buy on Amazon
Seagate Exos X24 20TB Enterprise Internal Hard Drive HDD - 12GB/s SAS 7200RPM 2.5M MTBF (ST20000NM002H) (Renewed)Renewed	20 TB	$699.99	$35.00	SAS	-	Buy on Amazon
Seagate Expansion 20TB External Hard Drive HDD - USB 3.0, with Rescue Data Recovery Services (STKP20000400)	20 TB	$729.99	$36.50	HDD · USB	-	Buy on Amazon
Toshiba - HDWG82AXZSTB - Toshiba N300 Pro HDWG82AXZSTB 20 TB Hard Drive - 3.5 Internal - SATA (SATA/600) - Conventional	20 TB	$766.99	$38.35	HDD · SATA	-	Buy on Amazon
Seagate Exos X20 ST20000NM007D 20TB 7.2K RPM SATA 6Gb/s 3.5in Hard Drive (Renewed)Renewed	20 TB	$782.89	$39.14	HDD · SATA	-	Buy on Amazon
WD 20TB Elements Desktop External Hard Drive, USB 3.0 drive for plug-and-play storage - WDBWLG0200HBK-NESNUsed	20 TB	$785.39	$39.27	HDD · USB	Prime	Buy on Amazon
Seagate IronWolf Pro, 20 TB, Enterprise NAS Internal HDD –CMR 3.5 Inch, SATA 6 Gb/s, 7,200 RPM, 256 MB Cache for RAID Network Attached Storage (ST20000NT001)Used	20 TB	$835.99	$41.80	HDD · SATA	Prime	Buy on Amazon
Western Digital 20TB WD Red Pro NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 512 MB Cache, 3.5" - WD202KFGXUsed	20 TB	$845.00	$42.25	HDD · SATA	Prime	Buy on Amazon
WD 20TB Elements Desktop External Hard Drive - USB 3.0, Black	20 TB	$868.17	$43.41	HDD · USB	-	Buy on Amazon
Seagate Skyhawk AI 20TB Video Internal Hard Drive HDD – 3.5 Inch SATA 6Gb/s 512MB Cache for DVR NVR Security Camera System with in-House Rescue Services (ST20000VE003)	20 TB	$879.99	$44.00	HDD · SATA	-	Buy on Amazon
Seagate IronWolf Pro, 20 TB, Enterprise NAS Internal HDD –CMR 3.5 Inch, SATA 6 Gb/s, 7,200 RPM, 256 MB Cache for RAID Network Attached Storage (ST20000NT001)	20 TB	$879.99	$44.00	HDD · SATA	-	Buy on Amazon
Western Digital 20TB WD Red Pro NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 512 MB Cache, 3.5" - WD202KFGX	20 TB	$892.26	$44.61	HDD · SATA	Prime	Buy on Amazon
Toshiba N300 20TB NAS 3.5-Inch Internal Hard Drive - CMR SATA 6 GB/s 7200 RPM 512 MB Cache - HDWG62AXZSTA	20 TB	$899.95	$45.00	HDD · SATA	-	Buy on Amazon
Seagate Exos X20 ST20000NM000D 20 TB Hard Drive - Internal - SATA (SATA/600) - Conventional Magnetic Recording (CMR) Method - Storage System, Video Surveillance System Device Supported - 7200rpm - 285Used	20 TB	$924.54	$46.23	HDD · SATA	-	Buy on Amazon
Oyen Digital Novus 20TB Rugged External USB-C 7200RPM Desktop Hard Drive	20 TB	$949.00	$47.45	HDD · USB	Prime	Buy on Amazon
WD Ultrastar DC HC560 - Hard Drive - 20 TB - Internal - 3.5" (8.9 cm) - SAS 12Gb/s - 7200 RPM - Buffer: 512 MBUsed	20 TB	$958.00	$47.90	SAS	-	Buy on Amazon
Seagate Exos X24 20TB Enterprise Internal Hard Drive HDD - 12GB/s SAS 7200RPM 2.5M MTBF (ST20000NM002H)	20 TB	$984.97	$49.25	SAS	-	Buy on Amazon
Seagate Exos X20 ST20000NM000D 20 TB Hard Drive - Internal - SATA (SATA/600) - Conventional Magnetic Recording (CMR) Method - Storage System, Video Surveillance System Device Supported - 7200rpm - 285	20 TB	$994.43	$49.72	HDD · SATA	-	Buy on Amazon
Western Digital Ultrastar WUH722020CLE6L4 20 TB Hard Drive - 3.5" Internal - SATA - Energy-Assisted Magnetic Recording (EAMR) Method	20 TB	$999.00	$49.95	HDD · SATA	-	Buy on Amazon
LaCie d2 Professional 20TB External Hard Drive Desktop HDD – USB-C USB 3.1 Gen 2, 7200 RPM Enterprise Class Drives, for Mac and PC Desktop, 1mo Adobe CC All Apps Plan, Rescue Services (STHA20000800)Used	20 TB	$999.99	$50.00	HDD · USB	-	Buy on Amazon
Toshiba 20TB MG10ACA20TE SATA 600GB 20in1 HDD	20 TB	$1,089.00	$54.45	HDD · SATA	-	Buy on Amazon
Western Digital 20TB WD Ultrastar DH HC560 7200RPM 512MB Ent,	20 TB	$1,099.99	$55.00	HDD · SATA	-	Buy on Amazon
Glyph Blackbox PRO 20TB 280 MB/s USB-C Enterprise Class Desktop Hard Drive \| USB 3.0 and Thunderbolt 3 Compatible, Rugged Production-Grade Reliability for Photo/Video Editing and Backup	20 TB	$1,199.99	$60.00	HDD · Thunderbolt	-	Buy on Amazon
Western Digital 20TB My Book Duo Desktop RAID External Hard Drive HDD, USB 3.1, With Password Protection and Auto Backup Software - WDBFBE0200JBK-NESN	20 TB	$1,299.99	$65.00	HDD · USB	Prime	Buy on Amazon
WD Ultrastar DC HC560 - Hard Drive - 20 TB - Internal - 3.5" (8.9 cm) - SAS 12Gb/s - 7200 RPM - Buffer: 512 MB	20 TB	$1,489.45	$74.47	SAS	-	Buy on Amazon

Frequently asked questions

Is a 20TB drive good value?

Often yes. High-capacity drives usually have the lowest price per terabyte, so 20TB can be excellent value for bulk storage.

What is the cheapest 20TB drive?

The table above is sorted by price per terabyte, so the best value 20TB options are at the top. Prices update daily from Amazon.com.

20TB SSD or hard drive?

20TB is almost always a hard drive; SSDs at this size are rare and expensive.

Last updated: 2026-10-31 12:02:04 UTC. As an Amazon Associate we earn from qualifying purchases. Product prices and availability are accurate as of the date indicated on Amazon.com and are subject to change. Any price displayed at the time of purchase will apply. CERTAIN CONTENT THAT APPEARS ON THIS SITE COMES FROM AMAZON SERVICES LLC. THIS CONTENT IS PROVIDED AS IS AND IS SUBJECT TO CHANGE OR REMOVAL AT ANY TIME.