Best 18TB storage, ranked by $/TB

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

Updated 4 hours ago

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18TB 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 18TB and the 14-18TB band around it are the value sweet spot for mass storage. This table ranks every 18TB drive we track on Amazon.ca by live price per terabyte, so you can find the cheapest capacity per dollar.

Best price per TB

CA$8.32

Products tracked

Prices updated

4 hours ago

TypeForm factorInterfaceMin capacityConditionBrand

Price per

Sort

26 products

Product	Capacity	Price	CA$ / TB	Tech	Prime
HPE LTO-9 Ultrium 45TB RW Data Cartridge	18 TB	CA$149.81	CA$8.32	Tape · SAS	-
Fuji 16659047film Lto Ultrium 9 18tb Native 45tb Compressed Tape Cartridge with Case	18 TB	CA$169.99	CA$9.44	Tape · SAS	-
Unknown, for LTO-9 Tape Drives. Price is PER Cartridge, BUT Must BE Purchased in Multiple, MR-L9MQN-01	18 TB	CA$190.59	CA$10.59	Tape · SAS	-
HPE - LTO Ultrium 9-18 TB / 45 TB - Write-on Labels - Light Blue	18 TB	CA$373.13	CA$20.73	Tape · SAS	-
Seagate Exos X20 18TB Internal Hard Drive - 3.5 Inch Hyperscale SATA 6GB/s HDD, 7,200 RPM, 2.5M MTBF, 512e and 4Kn FastFormat, Low Latency with Enhanced Caching (ST18000NM003D)Used	18 TB	CA$705.44	CA$39.19	HDD · SATA	-
Western Digital WD WUH721818AL5204 18TB SAS 12Gb/s 7.2K RPM 512M 0F38353 512e/4Kn SE HDD (Renewed)Renewed	18 TB	CA$766.38	CA$42.58	SAS	-
Western Digital WD WUH721818AL5204 18TB SAS 12Gb/s 7.2K RPM 512M 0F38353 512e/4Kn SE HDDUsed	18 TB	CA$775.83	CA$43.10	SAS	-
Water Panther WP Arsenal 18TB SAS 12Gb/s 7200RPM 3.5-Inch DAS Hard Drive for Storage Server, Enterprise JBOD, Business RAID Workstation, Internal SAS LFF HDD (Renewed)Renewed	18 TB	CA$814.38	CA$45.24	SAS	-
Western Digital WD WUH721818AL5204 18TB SAS 12Gb/s 7.2K RPM 512M 0F38353 512e/4Kn SE HDD	18 TB	CA$819.99	CA$45.56	SAS	-
Water Panther 18TB 7200 RPM SAS 12Gb/s 3.5-Inch Enterprise Hard Disk Drive in 13G Tray Compatible with Dell PowerEdge Servers R730XD R730 T340 T330 T640 T630 T440 (Renewed)Renewed	18 TB	CA$841.13	CA$46.73	SAS	-
Western Digital 18TB WD Red Pro NAS WD181KFGX 7200 RPM SATA 6 Gb/s CMR 256 MB Cache 3.5" Internal Hard Drive HDD (Renewed)Renewed	18 TB	CA$848.93	CA$47.16	HDD · SATA	-
WD 18TB Elements Desktop External Hard Drive, USB 3.0 External Hard Drive for Plug-and-Play Storage - WDBWLG0180HBK-NESN	18 TB	CA$908.22	CA$50.46	HDD · USB	-
Seagate Exos X20 ST18000NM004D 18 TB Hard Drive - Internal - SATA (SATA/600) - Conventional Magnetic Recording (CMR) Method - Storage System, RAID Controller, Video Surveillance System Device Supporte	18 TB	CA$1,000.00	CA$55.56	HDD · SATA	-
Western Digital 18TB WD Purple Pro Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 512 MB Cache, 3.5" - WD181PURP	18 TB	CA$999.99	CA$55.56	HDD · SATA	Prime
Western Digital 18TB WD Red Pro NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" - WD181KFGX	18 TB	CA$999.99	CA$55.56	HDD · SATA	Prime
WD 18TB My Book Desktop External Hard Drive, USB 3.0, External HDD with Password Protection and Auto Backup Software - WDBBGB0180HBK-NESN	18 TB	CA$1,024.99	CA$56.94	HDD · USB	Prime
Seagate One Touch Hub 18TB External Hard Drive Desktop HDD – USB-C and USB 3.0 Port, for Computer,Workstation PC Laptop Mac (STLC18000400)	18 TB	CA$1,045.33	CA$58.07	HDD · USB	-
Seagate Exos X20 18TB Internal Hard Drive - 3.5 Inch Hyperscale SATA 6GB/s HDD, 7,200 RPM, 2.5M MTBF, 512e and 4Kn FastFormat, Low Latency with Enhanced Caching (ST18000NM003D)	18 TB	CA$1,075.51	CA$59.75	HDD · SATA	-
Western Digital Ultrastar DC HC550 18 TB Hard Drive - 3.5" Internal - SATAUsed	18 TB	CA$1,132.96	CA$62.94	HDD · SATA	-
SanDisk Professional 18TB G-Drive Enterprise-Class External Desktop Hard Drive - 7200RPM Ultrastar HDD Inside, USB-C (10Gbps), USB 3.2 Gen 2, Mac Ready - SDPHF1A-018T-NBAAD	18 TB	CA$1,199.99	CA$66.67	HDD · USB	-
WD HGST 18TB 512MB 7200RPM SATA Ultra 512E SE NP Storage DEVICUsed	18 TB	CA$1,234.78	CA$68.60	HDD · SATA	-
Seagate Exos X18 Enterprise 18TB HDD CMR 3.5" Hyperscale SATA 6Gb/s 7200RPM 512e 4Kn FastFormat Low Latency with Improved Caching Model No: ST18000NM00J	18 TB	CA$1,261.46	CA$70.08	HDD · SATA	-
Toshiba HDD 18000GBGB 3.5" 7.2k SATA 6Gbit/s 512	18 TB	CA$1,277.19	CA$70.96	HDD · SATA	-
Western Digital 18TB WD Gold Enterprise Class Internal Hard Drive - 7200 RPM Class, SATA 6 Gb/s, 512 MB Cache, 3.5" - WD181KRYZ	18 TB	CA$1,299.94	CA$72.22	HDD · SATA	-
Toshiba 18TB N300 Internal Hard Drive – NAS 3.5 Inch SATA HDD Supports Up to 8 Drive Bays Designed for 24/7 NAS Systems, New Generation (HDWG480UZSVA)	18 TB	CA$1,564.33	CA$86.91	HDD · SATA	-
Hewlett Packard Enterprise HPE LTO-9 Ultrium 45TB RW Non Custom Labeled 20 Data Cartridges with Cases	18 TB	CA$2,242.61	CA$124.59	Tape · SAS	-

Frequently asked questions

Is a 18TB drive good value?

Often yes. High-capacity drives usually have the lowest price per terabyte, so 18TB can be excellent value for bulk storage.

What is the cheapest 18TB drive?

The table above is sorted by price per terabyte, so the best value 18TB options are at the top. Prices update daily from Amazon.ca.

18TB SSD or hard drive?

18TB is almost always a hard drive; SSDs at this size are rare and expensive.

Last updated: 2026-09-09 06:03:37 UTC. As an Amazon Associate we earn from qualifying purchases. Product prices and availability are accurate as of the date indicated on Amazon.ca 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.