Best 18TB storage, ranked by $/TB

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

Updated 5 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

5 hours ago

TypeForm factorInterfaceMin capacityConditionBrand

Price per

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46 products

Product	Capacity	Price	CA$ / TB	Tech	Prime	Buy
HPE LTO-9 Ultrium 45TB RW Data Cartridge	18 TB	CA$149.81	CA$8.32	Tape · SAS	-	Buy on Amazon
Fuji 16659047film Lto Ultrium 9 18tb Native 45tb Compressed Tape Cartridge with Case	18 TB	CA$173.99	CA$9.67	Tape · SAS	-	Buy on Amazon
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	-	Buy on Amazon
Ibm Lto Ultrium-9 02xw568 18tb/45tb Lto-9	18 TB	CA$213.34	CA$11.85	Tape · SAS	-	Buy on Amazon
HPE - LTO Ultrium 9-18 TB / 45 TB - Write-on Labels - Light Blue	18 TB	CA$391.43	CA$21.75	Tape · SAS	-	Buy on Amazon
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	-	Buy on Amazon
HP 18TB 7200 RPM SATA 6Gb/s 512e 512MB Cache 3.5in Enterprise Hard Drive for DL20 DL110 DL320 DL325 DL340 DL345 DL360 DL365 DL380 DL385 DL560 ML110 ML350 P37677-001 G11 (Renewed)Renewed	18 TB	CA$772.73	CA$42.93	HDD · SATA	-	Buy on Amazon
HP/Western Digital Ultrastar DC HC550 WUH721818ALE600 0F38492 18TB 7200 RPM SATA 6Gb/s 512e 512MB Cache Power Disable 3.5in Enterprise Hard Drive MB018000GXLAV P37677-001 (Renewed)Renewed	18 TB	CA$772.73	CA$42.93	HDD · SATA	-	Buy on Amazon
WD HGST 18TB 512MB 7200RPM SATA Ultra 512E SE NP Storage DEVIC (Renewed)Renewed	18 TB	CA$774.50	CA$43.03	HDD · SATA	-	Buy on Amazon
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	-	Buy on Amazon
HP/Seagate Exos X18 ST18000NM002J 18TB 7200 RPM SATA 6Gb/s 512e 256MB 3.5in Enterprise Hard Drive MB018000GYDKR P44757-005 (Renewed)Renewed	18 TB	CA$790.15	CA$43.90	HDD · SATA	-	Buy on Amazon
Western Digital Ultrastar DC HC550 WUH721818ALE601 0F38452 18TB 7200 RPM SATA 6Gb/s 512e 512MB Cache Power Disable 3.5in Enterprise Hard Drive (Renewed)Renewed	18 TB	CA$853.49	CA$47.42	HDD · SATA	-	Buy on Amazon
Western Digital WD WUH721818AL5204 18TB SAS 12Gb/s 7.2K RPM 512M 0F38353 512e/4Kn SE HDD (Renewed)Renewed	18 TB	CA$853.49	CA$47.42	SAS	-	Buy on Amazon
WD HGST 18TB 512MB 7200RPM SATA Ultra 512E SE NP Storage DEVIC	18 TB	CA$893.68	CA$49.65	HDD · SATA	Prime	Buy on Amazon
Western Digital Ultrastar DC HC550 18TB 7200RPM 3.5" SATA Hard Drive WUH721818ALE6L4 (Renewed)Renewed	18 TB	CA$900.99	CA$50.06	HDD · SATA	-	Buy on Amazon
Seagate Exos X18 ST18000NM000J 18 TB Hard Drive - Internal - SATA (SATA/600) (Renewed)Renewed	18 TB	CA$909.02	CA$50.50	HDD · SATA	-	Buy on Amazon
Seagate 18TB HDD Exos X18 7200 RPM SATA 6Gb/s 3.5-Inch CMR Enterprise Hard Drive - ST18000NM000J (Renewed)Renewed	18 TB	CA$909.02	CA$50.50	HDD · SATA	-	Buy on Amazon
Seagate Exos X20 ST18000NM003D 18TB 7.2K RPM 512e SATA 6Gb/s 3.5in Enterprise Hard Drive (Renewed)Renewed	18 TB	CA$944.20	CA$52.46	HDD · SATA	-	Buy on Amazon
WD WD181KRYZ Gold 18 TB Hard Drive - 3.5" Internal - SATA (SATA/600) - Server, Storage System Device Supported - 7200rpm (Renewed)Renewed	18 TB	CA$948.50	CA$52.69	HDD · SATA	-	Buy on Amazon
Western Digital 18TB WD Gold Enterprise Class Internal Hard Drive - 7200 RPM Class, SATA 6 Gb/s, 512 MB Cache, 3.5" - WD181KRYZUsed	18 TB	CA$948.50	CA$52.69	HDD · SATA	-	Buy on Amazon
Western Digital 18TB WD Gold Enterprise Class Internal Hard Drive - 7200 RPM Class, SATA 6 Gb/s, 512 MB Cache, 3.5" - WD181KRYZ (Renewed)Renewed	18 TB	CA$948.50	CA$52.69	HDD · SATA	-	Buy on Amazon
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$980.17	CA$54.45	HDD · SATA	-	Buy on Amazon
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	-	Buy on Amazon
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$1,027.67	CA$57.09	SAS	-	Buy on Amazon
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$1,027.67	CA$57.09	SAS	-	Buy on Amazon
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	-	Buy on Amazon
Western Digital 18TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 512MB Cache, 3.5" - WD180PURZ (Renewed)Renewed	18 TB	CA$1,059.34	CA$58.85	HDD · SATA	-	Buy on Amazon
WD 18TB Elements Desktop External Hard Drive, USB 3.0 External Hard Drive for Plug-and-Play Storage - WDBWLG0180HBK-NESN	18 TB	CA$1,070.95	CA$59.50	HDD · USB	Prime	Buy on Amazon
EXOS X18 18TB SAS 3.5IN 7200RPM HELIUM 512E/4K (Renewed)Renewed	18 TB	CA$1,081.19	CA$60.07	SAS	-	Buy on Amazon
Western Digital Ultrastar DC HC550 WUH721818AL5201 18 TB Hard Drive - 3.5" Internal - SAS (12Gb/s SAS) (Renewed)Renewed	18 TB	CA$1,124.54	CA$62.47	SAS	-	Buy on Amazon
WD 18TB Elements Desktop External Hard Drive - USB 3.0, Black	18 TB	CA$1,137.54	CA$63.20	HDD · USB	-	Buy on Amazon
Western Digital Ultrastar DC HC550 18 TB Hard Drive - 3.5" Internal - SATAUsed	18 TB	CA$1,145.65	CA$63.65	HDD · SATA	-	Buy on Amazon
Western Digital 18TB My Book USB 3.0 Desktop Hard Drive with Password Protection and Auto Backup Software	18 TB	CA$1,180.31	CA$65.57	HDD · USB	-	Buy on Amazon
Western Digital 18TB WD Purple Pro Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 512 MB Cache, 3.5" - WD181PURP	18 TB	CA$1,204.99	CA$66.94	HDD · SATA	Prime	Buy on Amazon
HD 18TB N300 PRO NAS 3.5 in 7200RPM SATA III TOSHIBA HDWG81JXZSTB	18 TB	CA$1,213.80	CA$67.43	HDD · SATA	-	Buy on Amazon
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$1,229.99	CA$68.33	HDD · USB	Prime	Buy on Amazon
WD HGST 18TB 512MB 7200RPM SATA Ultra 512E SE NP Storage DEVICUsed	18 TB	CA$1,248.61	CA$69.37	HDD · SATA	-	Buy on Amazon
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$1,261.70	CA$70.09	HDD · SATA	-	Buy on Amazon
Toshiba HDD 18000GBGB 3.5" 7.2k SATA 6Gbit/s 512	18 TB	CA$1,277.19	CA$70.96	HDD · SATA	-	Buy on Amazon
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$1,292.01	CA$71.78	HDD · USB	Prime	Buy on Amazon
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$1,303.82	CA$72.43	HDD · SATA	-	Buy on Amazon
Toshiba N300 18TB NAS Internal Hard Drive for NAS Systems \| Built for 24/7 NAS use; high reliability for multi-bay systems; large cache; ideal for home servers, media centers & backups	18 TB	CA$1,449.46	CA$80.53	HDD · SATA	-	Buy on Amazon
Toshiba Mg11aca18te Disco Rigido Interno 18 Tb 7200 Giri/min 1024 MB 3.5 Serial Ata III (toshiba Mg11aca18te / 18tb / 3.5)	18 TB	CA$1,653.72	CA$91.87	HDD · SATA	-	Buy on Amazon
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$1,940.16	CA$107.79	HDD · SATA	-	Buy on Amazon
Seagate IronWolf 18TB NAS Internal Hard Drive HDD – CMR 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache for RAID Network Attached Storage, Rescue Services (ST18000VNZ00/ST18000VN000)	18 TB	CA$2,220.00	CA$123.33	HDD · SATA	-	Buy on Amazon
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	-	Buy on Amazon

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: 2026-10-31 06:03:19 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.