18 TB Hard Disk Drives Prices - SSDs and HDDs

Compare prices of 18 TB hard disk drives from top manufacturers. Find best and low cost internal and external HDDs and SSDs from 31 options.

$196$10.8918 TBRenewed5 yearsMDD (MDD18TSATA25672E) 18TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5inch Internal Enterprise Hard Drive - 5 Years Warranty (Renewed)MaxDigitalDataInternal 3.5"HDD
$210$11.6718 TBUsed3 monthsSeagate (Recertified IronWolf Pro 18TB Enterprise NAS Internal HDD Hard Drive – CMR 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache for RAID Network Attached Storage (ST18000NT001)SeagateInternal 3.5"HDD
$220$12.2218 TBRenewed2 yearsAvolusion M5 Series 18TB USB 3.0 External Hard Drive for WindowsOS Desktop PC/Laptop (Renewed)AvolusionExternal 3.5"HDD
$220$12.2218 TBRenewed3 monthsWD Ultrastar DC HC550 18TB 7200RPM 3.5" SATA Hard Drive WUH721818ALE6L4 (Renewed)Western DigitalInternal 3.5"HDD
$229$12.7218 TBRenewed3 monthsMDD (MDD18TSATA25672E) 18TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal Enterprise Hard Drive - 5 Years Warranty (Renewed)MDDInternal 3.5"HDD
$240$13.3318 TBRenewed5 yearsMDD (MDD18TS25672NAS) 18TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal NAS Hard Drive (Renewed)MDDInternal 3.5"HDD
$240$13.3318 TBRenewed2 yearsAvolusion PRO-5Y Series 18TB USB 3.0 External Hard Drive for WindowsOS Desktop PC/Laptop (White) (Renewed)AvolusionExternal 3.5"HDD
$240$13.3318 TBRenewed2 yearsAvolusion PRO-5X (Grey) 18TB USB 3.0 External Hard Drive for PC, Mac, Xbox (Renewed)AvolusionExternal 3.5"HDD
$240$13.3318 TBRenewed3 monthsMDD (MDD18TS25672NAS) 18TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal NAS Hard Drive - 5 Years Warranty (Renewed)MDDInternal 3.5"HDD
$240$13.3318 TBRenewed3 yearsMDD (MDD18TS25672CCTV) 18TB 7200RPM 256MB Cache SATA 6.0Gb/s 3.5inch Internal Surveillance Hard Drive - 3 Years Warranty (Renewed)MDDInternal 3.5"HDD
$240$13.3318 TBRenewed2 yearsAvolusion PRO-G1 Series USB 3.2 Gen 2 (10Gbps) USB-C External Hard Drive with USB Hub for Windows or MacOS Desktop PC / Laptop (Black) (18TB) (Renewed)AvolusionExternal 3.5"HDD
$240$13.3318 TBRenewed2 yearsAvolusion PRO-T5 Series USB 3.0 External Hard Drive for WindowsOS Desktop PC/Laptop (White) - 2 Year Warranty (18TB) (Renewed)AvolusionExternal 3.5"HDD
$250$13.8918 TBRenewed3 monthsWestern Digital WD WUH721818AL5204 18TB SAS 12Gb/s 7.2K RPM 512M 0F38353 512e/4Kn SE HDD (Renewed)Western DigitalInternalSAS
$250$13.8918 TBRenewed2 yearsAvolusion PRO-5X Series 18TB USB 3.0 External Hard Drive for WindowsOS Desktop PC/Laptop (White) (Renewed)AvolusionExternal 3.5"HDD
$270$1518 TBRenewed2 yearsAvolusion PRO-G1 Series 18TB USB 3.2 Gen 2 (10Gbps) USB-C External Hard Drive for Windows or MacOS Desktop PC/Laptop (Silver) (Renewed)AvolusionExternal 3.5"HDD
$290$16.1118 TBRenewed2 yearsAvolusion PRO-T8 Series 18TB USB 3.0 External Hard Drive for WindowsOS Desktop PC/Laptop (Black) (Renewed)AvolusionExternal 3.5"HDD
$290$16.1118 TBRenewed3 monthsSeagate Exos X18 ST18000NM000J 18 TB Hard Drive - Internal - SATA (SATA/600) (Renewed)SeagateInternal 3.5"HDD
$300$16.6718 TBUsed5 yearsSeagate Exos X18 18TB Enterprise HDD - CMR 3.5 Inch Hyperscale SATA 6Gb/s, 7200 RPM, 512e and 4Kn FastFormat, Low Latency with Enhanced Caching (ST18000NM000J)SeagateInternal 3.5"HDD
$304$16.8918 TBUsed6 monthsSeagate ST18000NM003D 18TB Exos X20 SATA Hard Drive, 3.5" HDD, SATA 6Gb/s, 7200rpm, 256MB Cache, 512E, 4.16ms, NCQSeagateInternal 3.5"HDD
$309$17.1718 TBRenewed3 monthsSeagate Exos Mach.2 18TB Enterprise Hard Drive HDD SATA 6Gb/s 256MB Cache 7200 RPM 512e CMR Helium Sealed 3.5in Hard Drive ST18000NM0092 (Renewed)SeagateInternal 3.5"HDD
$339$18.8318 TBNew2 yearsToshiba X300 18TB Performance & Gaming 3.5-Inch Internal Hard Drive - CMR SATA 6 Gb/s 7200 RPM 512 MB Cache - HDWR51JXZSTAToshibaInternal 3.5"HDD
$340$18.8918 TBNew3 yearsWD 18TB My Book Desktop External Hard Drive, USB 3.0, External HDD with Password Protection and Auto Backup Software - WDBBGB0180HBK-NESNWestern DigitalExternal 3.5"HDD
$340$18.8918 TBNew0 monthsSeagate Enterprise 3.5" 18000 GB 7200 RPM 18 TB 3.5" 7200 RPM SATA ST18000NM00JSeagateInternal 3.5"HDD
$349$19.3918 TBNew5 yearsToshiba X300 PRO 18TB High Workload Performance for Creative Professionals 3.5-Inch Internal Hard Drive – Up to 300 TB/Year Workload Rate CMR SATA 6 GB/s 7200 RPM 512 MB Cache - HDWR51JXZSTBToshibaInternal 3.5"HDD
$350$19.4418 TBNew5 yearsSeagate Exos X18 ST18000NM004J 18 TB Hard Drive - Internal - SAS (12Gb/s SAS)SeagateInternalSAS
$368$20.4418 TBNew5 yearsWestern Digital 18TB WD Purple Pro Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 512 MB Cache, 3.5" - WD181PURPWestern DigitalInternal 3.5"HDD
$380$21.1118 TBUsed5 yearsWestern Digital 18TB WD Gold Enterprise Class Internal Hard Drive - 7200 RPM Class, SATA 6 Gb/s, 512 MB Cache, 3.5" - WD181KRYZWestern DigitalInternal 3.5"HDD
$387$21.518 TBUsed5 yearsWestern Digital 18TB WD Red Pro NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 512 MB Cache, 3.5" - WD181KFGXWestern DigitalInternal 3.5"HDD
$439$24.3918 TBNew5 yearsSeagate Exos X18 ST18000NM005J 18 TB Hard Drive - Internal - SAS (12Gb/s SAS) - 7200rpm - 5 Year WarrantySeagateInternalSAS
$494$27.4418 TBNew0 monthsWD Red Pro 18TB NAS 3.5" Internal Hard Drive - 7200 RPM Class, SATA 6 Gb/s, CMR, 512MB CacheWestern DigitalInternal 3.5"HDD
$590$32.7818 TBNew2 yearsFantom Drives 18TB External Hard Drive HDD, GFORCE 3 Pro 7200RPM, USB 3.0 + eSATA, Aluminum, Fanless, On/Off Switch, Black, GFP18000EU3FantomExternal 3.5"HDD

FAQ

  • How much is 18 terabytes in gigabytes or GB?

    Value of 18 terabytes or 18 TB is 18432 GB in binary, and 18000 GB in decimal. In general, 1 terabyte is equal to 1000 gigabytes in decimal and 1024 gigabytes in binary.

  • How much does a 18 TB hard drive cost?

    We found these 31 hard drives with 18 TB capacity. The most affordable 18 TB drive costs $196 and the most expensive one costs $590. That's a price difference of $394! Please note that prices may vary and change over time.

  • Which is the cheapest 18 TB hard drive?

    The cheapest 18 TB hard drive is the MDD (MDD18TSATA25672E) 18TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5inch Internal Enterprise Hard Drive - 5 Years Warranty (Renewed) priced at $196 which roughly comes out to $10.89 per TB. It can be a good buy at this price point, WD Ultrastar DC HC550 18TB 7200RPM 3.5" SATA Hard Drive WUH721818ALE6L4 (Renewed) is also another good one at $12.22 per TB, but please do your own research before making a purchase.

  • How much data can a 18 TB hard disk hold?

    A 18 TB hard disk can hold approximately 4500000 photos taken with a 12MP camera, 4500 full-length HD movies (around 9000 hours of HD video), 117 million document pages, or 180 hours of 4K video content at 30fps. These are approximate values and actual storage capacity may vary depending on file formats, compression, and other factors.