20TB+ Hard Drive Deals – Prime Big Deal Days 2026
At 20TB and above, external desktop drives and internal NAS drives are in the same price conversation, because the externals hold enterprise-class drives that can be shucked. This page ranks every 20TB and larger drive by price per terabyte, internal and external together, and shows each external's post-shuck price next to the cheapest internal at its capacity.
As an Amazon Associate we earn from qualifying purchases. Prices and availability come from Amazon.com as of the last update and may change.
What is actually cheap here today: the Toshiba N300 Pro 20TB at $766.99 ($38.35/TB), matching the lowest price per terabyte we have recorded for a new 20TB NAS drive. 1 of 33 rows on this page are at or near our tracked low.
Worth checking out today
Few 20TB+ Hard Drive listings have enough price history with us to call a tracked low yet, so these are the standouts on Amazon.com today: Prime-exclusive offers first, then the deepest cuts against Amazon's own reference price. Amazon's reference is its figure, not our price record.
20TB+ Hard Drive prices checked against our history
| Product | Size | Price | Was | Per unit | vs internal | Verdict | Prime | 90 days | Buy |
|---|---|---|---|---|---|---|---|---|---|
| Toshiba N300 Pro 20TBToshiba - HDWG82AXZSTB - Toshiba N300 Pro HDWG82AXZSTB 20 TB Hard Drive - 3.5 Internal - SATA (SATA/600) - Conventional | 20 TB | $766.99 | - | $38.35/TB | - | Our tracked lowLow $767.00 · Oct 5 | - | Buy on Amazon | |
| WD Elements 20TBWD 20TB Elements Desktop External Hard Drive, USB 3.0 drive for plug-and-play storage - WDBWLG0200HBK-NESNPost-shuck $27.50/TB · Shuckable: yes · Usually inside: WD Ultrastar DC HC560 / white-label EDGZ, CMR | 20 TB | $549.99 | $814.99Amazon ref. | $27.50/TB | Saves $217 (28%)vs $38.35/TB internal | No history yet | Prime deal | - | Buy on Amazon |
| OSENTRiX BX100 USB 3.2 Gen 2 24TBOSENTRiX BX100 24TB USB 3.2 Gen 2 USB-C External Hard Drive for Windows or MacOS Desktop PC/LaptopPost-shuck $30.83/TB · Shuckable: unknown | 24 TB | $739.99 | - | $30.83/TB | Saves $320 (30%)vs $44.17/TB internal | No history yet | - | - | Buy on Amazon |
| Seagate Expansion 24TBSeagate Expansion 24TB External Hard Drive HDD - USB 3.0, with Rescue Data Recovery Services (STKP24000400)Post-shuck $30.92/TB · Shuckable: unknown | 24 TB | $742.01 | - | $30.92/TB | Saves $318 (30%)vs $44.17/TB internal | No history yet | - | - | Buy on Amazon |
| OSENTRiX BX100 USB 3.2 Gen 2 22TBOSENTRiX BX100 22TB USB 3.2 Gen 2 USB-C External Hard Drive for Windows or MacOS Desktop PC/LaptopPost-shuck $31.36/TB · Shuckable: unknown | 22 TB | $689.99 | - | $31.36/TB | Saves $106 (13%)vs $36.18/TB internal | No history yet | - | - | Buy on Amazon |
| OSENTRiX GX100 USB 3.2 Gen 2 22TBOSENTRiX GX100 22TB USB 3.2 Gen 2 USB-C External Hard Drive with USB Hub for Windows or MacOS Desktop PC/Laptop - 2 Year WarrantyPost-shuck $34.09/TB · Shuckable: unknown | 22 TB | $749.99 | - | $34.09/TB | Saves $46 (6%)vs $36.18/TB internal | No history yet | - | - | Buy on Amazon |
| Avolusion PRO-G1 Series USB 3.2 Gen 20TBAvolusion PRO-G1 Series 20TB USB 3.2 Gen 2 (10Gbps) USB-C External Hard Drive for Windows or MacOS Desktop PC/Laptop (Silver)Post-shuck $35.00/TB · Shuckable: unknown | 20 TB | $699.99 | - | $35.00/TB | Saves $67 (9%)vs $38.35/TB internal | No history yet | - | - | Buy on Amazon |
| Toshiba N300 22TBTOSHIBA N300 Internal Hard Drive 22 Tb 7200 RPM 512 Mb 3.5", W129161818 (Tb 7200 RPM 512 Mb 3.5 Serial Ata Iii) | 22 TB | $795.99 | - | $36.18/TB | - | No history yet | - | - | Buy on Amazon |
| Toshiba MG10 22TBToshiba 22TB Enterprise Internal Hard Drive – MG Series 3.5" SATA HDD for Server, Storage, 24/7 Operation, Hyperscale, Cloud (MG10AFA22TE) | 22 TB | $835.99 | - | $38.00/TB | - | No history yet | - | - | Buy on Amazon |
| Seagate Expansion 20TBSeagate 20TB Expansion Desktop Hard Drive | MicroB to USB-C (STNP20000400)Post-shuck $38.51/TB · Shuckable: yes · Usually inside: Seagate Exos / IronWolf-class (ST20000NM), CMR | 20 TB | $770.17 | - | $38.51/TB | Costs $3 (0%)vs $38.35/TB internal | No history yet | - | - | Buy on Amazon |
| Seagate Expansion 22TBSeagate Expansion 22TB External Hard Drive HDD - USB 3.0, with Rescue Data Recovery Services (STKP22000400)Post-shuck $40.86/TB · Shuckable: unknown | 22 TB | $899.00 | - | $40.86/TB | Costs $103 (13%)vs $36.18/TB internal | No history yet | - | - | Buy on Amazon |
| Seagate Expansion 28TBSeagate Expansion 28TB External Hard Drive HDD - USB 3.0, with Rescue Data Recovery Services (STKP28000400)Post-shuck $42.86/TB · Shuckable: unknown | 28 TB | $1,199.99 | - | $42.86/TB | no internal | No history yet | - | - | Buy on Amazon |
| WD Elements 22TBWestern Digital 22TB Elements Desktop External Hard Drive, USB 3.0 external hard drive for plug-and-play storage - WDBWLG0220HBK-NESNPost-shuck $43.50/TB · Shuckable: yes · Usually inside: WD Ultrastar DC HC570 (WUH722222) class, CMR | 22 TB | $956.99 | - | $43.50/TB | Costs $161 (20%)vs $36.18/TB internal | No history yet | - | - | Buy on Amazon |
| WD Red Pro 22TBWestern Digital 22TB WD Red Pro NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 512 MB Cache, 3.5" - WD221KFGX | 22 TB | $958.90 | - | $43.59/TB | - | No history yet | - | - | Buy on Amazon |
| WD Elements 24TBWestern Digital WD 24TB Elements Desktop External Hard Drive for Plug-and-Play Storage, USB 3.2 Gen1 - WDBWLG0240HBK-NESNPost-shuck $43.76/TB · Shuckable: unknown | 24 TB | $1,050.26 | - | $43.76/TB | Saves $10 (1%)vs $44.17/TB internal | No history yet | - | - | Buy on Amazon |
| WD Elements 26TBWestern Digital WD 26TB Elements Desktop External Hard Drive, USB 3.0 External Hard Drive for Plug-and-Play Storage - WDBWLG0260HBK-NESNPost-shuck $44.04/TB · Shuckable: unknown | 26 TB | $1,144.99 | - | $44.04/TB | Saves $90 (7%)vs $47.50/TB internal | No history yet | - | - | Buy on Amazon |
| Western Digital WD Gold Enterprise Class 24TBWestern Digital 24TB WD Gold Enterprise Class SATA Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, 512 MB Cache, 3.5" - WD242KRYZ | 24 TB | $1,059.99 | - | $44.17/TB | - | No history yet | - | - | Buy on Amazon |
| WD Red Pro 24TBWestern Digital 24TB WD Red Pro NAS Internal Hard Drive HDD, 7200 RPM, SATA 6 Gb/s, CMR, 512 MB Cache, 3.5" - WD241KFGX | 24 TB | $1,059.99 | - | $44.17/TB | - | No history yet | - | - | Buy on Amazon |
| WD Elements 20TBWD 20TB Elements Desktop External Hard Drive - USB 3.0, BlackPost-shuck $45.00/TB · Shuckable: yes · Usually inside: WD Ultrastar DC HC560 / white-label EDGZ, CMR | 20 TB | $900.00 | - | $45.00/TB | Costs $133 (17%)vs $38.35/TB internal | No history yet | - | - | Buy on Amazon |
| WD Ultrastar HC580 24TBWestern Digital Ultrastar DC HC580 WUH722424ALE604 0F62798 24TB 7.2K RPM SATA 6Gb/s 512e 3.5in Enterprise Hard Drive | 24 TB | $1,106.90 | - | $46.12/TB | - | No history yet | - | - | Buy on Amazon |
| SanDisk Ultrastar 24TBSanDisk Professional 24TB G-Drive Enterprise-Class External Desktop Hard Drive - 7200RPM Ultrastar HDD Inside, USB-C (10Gbps), USB 3.2 Gen 2, Mac Ready - SDPHF1A-024T-NBAADPost-shuck $46.46/TB · Shuckable: unknown | 24 TB | $1,114.99 | - | $46.46/TB | Costs $55 (5%)vs $44.17/TB internal | No history yet | - | - | Buy on Amazon |
| SanDisk Ultrastar 22TBSanDisk Professional 22TB G-Drive Enterprise-Class External Desktop Hard Drive - 7200RPM Ultrastar HDD Inside, USB-C (10Gbps), USB 3.2 Gen 2, Mac Ready - SDPHF1A-022T-NBAAD, Dark GreyPost-shuck $46.82/TB · Shuckable: unknown | 22 TB | $1,029.99 | - | $46.82/TB | Costs $234 (29%)vs $36.18/TB internal | No history yet | - | - | Buy on Amazon |
| Oyen Digital Novus Rugged External USB-C 20TBOyen Digital Novus 20TB Rugged External USB-C 7200RPM Desktop Hard DrivePost-shuck $47.45/TB · Shuckable: unknown | 20 TB | $949.00 | - | $47.45/TB | Costs $182 (24%)vs $38.35/TB internal | No history yet | - | - | Buy on Amazon |
| WD Red Pro 26TBWestern Digital 26TB WD Red Pro NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 512 MB Cache, 3.5" - WD260KFGX | 26 TB | $1,235.00 | - | $47.50/TB | - | No history yet | - | - | Buy on Amazon |
| WD My Book 22TBWD 22TB My Book Desktop External Hard Drive, USB 3.0, External HDD with Password Protection and Backup Software - WDBBGB0220HBK-NESNPost-shuck $48.18/TB · Shuckable: unknown | 22 TB | $1,059.99 | - | $48.18/TB | Costs $264 (33%)vs $36.18/TB internal | No history yet | - | - | Buy on Amazon |
| Western Digital WD Gold Enterprise Class 22TBWestern Digital 22TB WD Gold Enterprise Class SATA Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, 512 MB Cache, 3.5" - WD221KRYZ | 22 TB | $1,129.99 | - | $51.36/TB | - | No history yet | - | - | Buy on Amazon |
| WD Elements 22TBWD 22TB Elements External Hard Drive, Desktop HDD Storage, USB 3.0 Compatible, Fast Transfer Rates, Easy add on Storage for All Your Pictures, Videos, Music and documents, BlackPost-shuck $58.17/TB · Shuckable: yes · Usually inside: WD Ultrastar DC HC570 (WUH722222) class, CMR | 22 TB | $1,279.69 | - | $58.17/TB | Costs $484 (61%)vs $36.18/TB internal | No history yet | - | - | Buy on Amazon |
Verdicts: Our tracked low is at or below the lowest price we recorded before today; within 3% is close to it; cut vs list only is below Amazon's reference price but above our low; no history yet means we make no claim. The 90-day line shades the event days. Was prices are Amazon's reference prices.
Prices we checked and would not pay (6)
| Product | Size | Price | Was | Per unit | vs internal | Verdict | Prime | 90 days | Buy |
|---|---|---|---|---|---|---|---|---|---|
| WD Red Pro 20TBWestern 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 | $879.99 | - | $44.00/TB | - | Not a dealLow $767.00 · Oct 5 | - | Buy on Amazon | |
| Toshiba N300 20TBToshiba 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/TB | - | Not a dealLow $767.00 · Oct 5 | - | Buy on Amazon | |
| Seagate Exos X20 20TBSeagate Exos X20 ST20000NM007D 20TB 7.2K RPM SATA 6Gb/s 3.5in Hard Drive | 20 TB | $950.00 | - | $47.50/TB | - | Not a dealLow $767.00 · Oct 5 | - | Buy on Amazon | |
| WD Ultrastar 20TBWestern Digital Ultrastar WUH722020CLE6L4 20 TB Hard Drive - 3.5" Internal - SATA - Energy-Assisted Magnetic Recording (EAMR) Method | 20 TB | $999.00 | - | $49.95/TB | - | Not a dealLow $767.00 · Oct 5 | - | Buy on Amazon | |
| WD Ultrastar HC560 20TBWD Ultrastar HC560 WUH722020BLE6L4 20TB 7200RPM 3.5" SE SATA HDD 0F38785 | 20 TB | $1,159.99 | - | $58.00/TB | - | Not a dealLow $767.00 · Oct 5 | - | Buy on Amazon | |
| WD Red Pro 20TBWestern Digital 20TB WD Red Pro NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 512 MB Cache, 3.5" - WD201KFGX | 20 TB | $1,199.99 | - | $60.00/TB | - | Not a dealLow $767.00 · Oct 5 | - | Buy on Amazon |
The Toshiba N300 Pro 20TB at $766.99 is our tracked low: the lowest we recorded was $767.00 on Oct 5, from every new CMR 20TB NAS drive we track. Of 33 rows, 1 are at or near our low, 0 are cut only against Amazon's list price, 6 cost more than usual, and 26 have no history yet. External drives carry no verdict from us yet because we only started recording their individual prices this week; their post-shuck figure is still a fair comparison. Hard drive prices have risen through 2026 on AI datacenter demand (why hard drives cost more in 2026), so a price that only matches our low is a better outcome than in an ordinary year.
Frequently asked questions
Is a 24TB external cheaper than a 24TB internal?
Usually, which is why shuckers buy them. The internal gap column shows the difference against today's cheapest internal of the same size, in dollars and percent.
Are 20TB+ drives worth it for a small NAS?
They cut the number of bays you need, which can mean a cheaper enclosure. The trade-off is a long rebuild, so use two-drive protection when you can.
Do these large drives fit any NAS?
Most current NAS models accept 24TB and larger drives; check the maximum per bay on the model page. Older units may not recognise the full size.
When should I buy a 20TB+ drive?
If a row is at our tracked low, today is as cheap as we have seen. Black Friday on 27 November often repeats sale prices on externals; internal drive prices have been rising through the year.