Enterprise and NAS-grade SATA hard drives sorted by price per TB. Includes Seagate Exos, WD Ultrastar, IronWolf Pro and WD Red Pro.
The best value enterprise SATA hard drive currently on Amazon US. Updated every 4 hours from live pricing.
The Seagate Exos X and WD Ultrastar DC series lead on reliability and workload ratings (550TB/yr). Renewed units of 16TB-22TB drives offer the best $/TB on the market right now. For new drives, MDD MaxDigitalData consistently undercuts brand-name pricing with a 5-year warranty. Shucking Seagate Expansion or WD Easystore externals can yield Exos/Ultrastar internals at even lower cost.
| $/TB ▲ | Brand / Model | Cap | Interface | Tech | Cache | Sector | Wty | Price | Cond. | 90D | Buy | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
👑$8.25 ↓ Good | Toshiba MG Series 8TB Enterprise SATA MG05ACA800E Refurb · CMR · 5yr | 8TB | SATA-6G 7,200 RPM | CMR | 128MB | 512e | 5yr | $66.00 | REFURB | ▼ | Buy →Details | ▼ |
$15.38 ↑ High | Toshiba MG Series 8TB Enterprise SATA MG05ACA800E CMR · 5yr | 8TB | SATA-6G 7,200 RPM | CMR | 128MB | 512e | 5yr | $123.00 | new | ▼ | Buy →Details | ▼ |
$16.40 ~ Fair | WD Ultrastar DC 20TB Renewed WUH722020BLE6L4 Refurb · 5yr | 20TB | SATA-6G 7,200 RPM | ePMR | 512MB | 512e | 5yr | $327.99 | REFURB | ▲ | Buy →Details | ▼ |
$16.87 ↓ Good | Seagate Exos X16 16TB Renewed ST16000NM001G Refurb · CMR · 5yr | 16TB | SATA-6G 7,200 RPM | CMR | 256MB | 512e | 5yr | $269.99 | REFURB | ▲ | Buy →Details | ▼ |
$17.14 ↓ Good | WD Ultrastar DC HC530 14TB SATA 4Kn NAS WUH721414ALN604 Refurb · CMR · 5yr | 14TB | SATA-6G 7,200 RPM | CMR | 512MB | 4Kn | 5yr | $239.99 | REFURB | ▲ | Buy →Details | ▼ |
$17.17 ~ Fair | WD Ultrastar DC HC550 18TB SATA WUH721818ALE6L4 5yr | 18TB | SATA-6G 7,200 RPM | ePMR | 512MB | 512e | 5yr | $309.00 | new | ▲ | Buy →Details | ▼ |
$17.54 ↓ Good | Seagate Exos X22 22TB Renewed ST22000NM001H Refurb · CMR · 5yr | 22TB | SATA-6G 7,200 RPM | CMR | 256MB | 512e | 5yr | $385.99 | REFURB | ▲ | Buy →Details | ▼ |
$17.92 ~ Fair | WD Ultrastar DC HC580 24TB Renewed WUH722424BLE6L4 Refurb · 5yr | 24TB | SATA-6G 7,200 RPM | ePMR | 512MB | 512e | 5yr | $429.99 | REFURB | ▲ | Buy →Details | ▼ |
$18.33 ↓ Good | Seagate Exos X24 24TB Renewed ST24000NM002H Refurb · CMR · 5yr | 24TB | SATA-6G 7,200 RPM | CMR | 512MB | 512e | 5yr | $439.99 | REFURB | ▲ | Buy →Details | ▼ |
$18.41 ~ Fair | WD Ultrastar DC HC580 22TB Renewed WUH722222BLE6L4 Refurb · 5yr | 22TB | SATA-6G 7,200 RPM | ePMR | 512MB | 512e | 5yr | $404.99 | REFURB | ▲ | Buy →Details | ▼ |
$19.17 ~ Fair | MDD 12TB SATA 6G 7200RPM NAS MDD12TSATA25672NAS CMR · 5yr | 12TB | SATA-6G 7,200 RPM | CMR | 256MB | 512e | 5yr | $229.99 | new | ▲ | Buy →Details | ▼ |
$19.17 ~ Fair | WD Ultrastar DC HC520 12TB SATA HUH721212ALE604 Refurb · CMR · 5yr | 12TB | SATA-6G 7,200 RPM | CMR | 256MB | 512e | 5yr | $229.99 | REFURB | ▲ | Buy →Details | ▼ |
$20.00 ↓ Good | HGST HUS724030ALA640 3TB SATA Enterprise HUS724030ALA640 Refurb · CMR · | 3TB | SATA-6G 7,200 RPM | CMR | — | 512n | — | $59.99 | REFURB | ▲ | Buy →Details | ▼ |
$20.00 ~ Fair | WD Ultrastar DC HC530 14TB SATA 4Kn NAS WUH721414ALN604 CMR · 5yr | 14TB | SATA-6G 7,200 RPM | CMR | 512MB | 4Kn | 5yr | $279.99 | new | ▲ | Buy →Details | ▼ |
$20.56 ~ Fair | Toshiba MG09 18TB SATA Enterprise HDEPZ10LFB51 CMR · 5yr | 18TB | SATA-6G 7,200 RPM | CMR | 512MB | 512e | 5yr | $370.01 | new | ▲ | Buy →Details | ▼ |
$20.63 ~ Fair | WD DC HC550 16TB SATA 7200RPM Enterprise WUH721816ALE6L4 5yr | 16TB | SATA-6G 7,200 RPM | ePMR | 512MB | 512e | 5yr | $330.00 | new | ▲ | Buy →Details | ▼ |
$21.67 ~ Fair | MDD 18TB SATA 6G 7200RPM NAS MD18TSATA25672NAS CMR · 5yr | 18TB | SATA-6G 7,200 RPM | CMR | 256MB | 512e | 5yr | $389.99 | new | ▲ | Buy →Details | ▼ |
$21.67 ~ Fair | MDD 18TB SATA 7200RPM Enterprise MDD18TSATA25672E CMR · 5yr | 18TB | SATA-6G 7,200 RPM | CMR | 256MB | 512e | 5yr | $389.99 | new | ▲ | Buy →Details | ▼ |
$21.87 ~ Fair | Seagate Exos X16 16TB Renewed ST16000NM001G CMR · 5yr | 16TB | SATA-6G 7,200 RPM | CMR | 256MB | 512e | 5yr | $349.99 | new | ▲ | Buy →Details | ▼ |
$22.22 ~ Fair | Toshiba MG09 18TB SATA MG09ACA18TE CMR · 5yr | 18TB | SATA-6G 7,200 RPM | CMR | 512MB | 512e | 5yr | $399.99 | new | ▲ | Buy →Details | ▼ |
$22.22 ~ Fair | MDD 18TB SATA 7200RPM NAS MDD18TS25672NAS CMR · 5yr | 18TB | SATA-6G 7,200 RPM | CMR | 256MB | 512e | 5yr | $399.99 | new | ▲ | Buy →Details | ▼ |
$22.40 ~ Fair | Seagate Exos X22 22TB Renewed ST22000NM001H CMR · 5yr | 22TB | SATA-6G 7,200 RPM | CMR | 256MB | 512e | 5yr | $492.82 | new | ▲ | Buy →Details | ▼ |
$22.50 ~ Fair | NetApp X306A-R5 2TB SATA 7200RPM X306A-R5 CMR · | 2TB | SATA-6G 7,200 RPM | CMR | — | 512n | — | $45.00 | new | ▲ | Buy →Details | ▼ |
$22.50 ~ Fair | NetApp X306A-R5 2TB SATA 7200RPM X306A-R5 Refurb · CMR · | 2TB | SATA-6G 7,200 RPM | CMR | — | 512n | — | $45.00 | REFURB | ▲ | Buy →Details | ▼ |
$22.50 ↓ Good | HGST Ultrastar He10 10TB SATA NAS HUH721010ALE600 Refurb · CMR · 5yr | 10TB | SATA-6G 7,200 RPM | CMR | — | 512e | 5yr | $224.99 | REFURB | ▲ | Buy →Details | ▼ |
$23.12 ~ Fair | Toshiba MG08 16TB SATA MG08ACA16TE CMR · 5yr | 16TB | SATA-6G 7,200 RPM | CMR | 512MB | 512e | 5yr | $369.99 | new | ▲ | Buy →Details | ▼ |
$23.50 ~ Fair | WD Ultrastar DC HC570 20TB SATA WUH722020BLE6L4 5yr | 20TB | SATA-6G 7,200 RPM | ePMR | 512MB | 512e | 5yr | $469.99 | new | ▲ | Buy →Details | ▼ |
$24.17 ~ Fair | MDD 12TB SATA 6G 7200RPM 256MB NAS MDD12TSATA25672NAS CMR · 5yr | 12TB | SATA-6G 7,200 RPM | CMR | 256MB | 512e | 5yr | $289.99 | new | ▲ | Buy →Details | ▼ |
$24.58 ~ Fair | Seagate Exos X24 24TB Renewed ST24000NM002H CMR · 5yr | 24TB | SATA-6G 7,200 RPM | CMR | 512MB | 512e | 5yr | $589.99 | new | ▲ | Buy →Details | ▼ |
$24.65 ~ Fair | Dell 9CF6R 2TB SATA 3G Certified 9CF6R CMR · | 2TB | SATA-6G 7,200 RPM | CMR | — | 512n | — | $49.29 | new | ▲ | Buy →Details | ▼ |
$24.65 ~ Fair | Dell 9CF6R 2TB SATA 3G Certified 9CF6R Refurb · CMR · | 2TB | SATA-6G 7,200 RPM | CMR | — | 512n | — | $49.29 | REFURB | ▲ | Buy →Details | ▼ |
$24.66 ~ Fair | MDD 12TB SATA 6G 7200RPM Enterprise MDD12TSATA25672E CMR · 5yr | 12TB | SATA-6G 7,200 RPM | CMR | 256MB | 512e | 5yr | $295.95 | new | ▲ | Buy →Details | ▼ |
$24.94 ↓ Good | Seagate Exos X20 18TB SATA ST18000NM003D Refurb · 5yr | 18TB | SATA-6G 7,200 RPM | ePMR | 256MB | 512e | 5yr | $449.00 | REFURB | ▼ | Buy →Details | ▼ |
$25.00 ↓ Good | MDD 3TB SATA 6G 7200RPM Enterprise MDD3TSATA6472E Refurb · CMR · | 3TB | SATA-6G 7,200 RPM | CMR | 64MB | 512n | — | $74.99 | REFURB | ▲ | Buy →Details | ▼ |
$25.00 ~ Fair | Seagate IronWolf 4TB NAS ST4000VN006 CMR · 3yr | 4TB | SATA-6G 5,400 RPM | CMR | 256MB | 512e | 3yr | $99.99 | new | ▲ | Buy →Details | ▼ |
$25.00 ~ Fair | WD Ultrastar DC HC560 16TB SATA WUH721816ALE6L4 CMR · 5yr | 16TB | SATA-6G 7,200 RPM | CMR | 512MB | 512e | 5yr | $399.99 | new | ▲ | Buy →Details | ▼ |
$25.00 ~ Fair | Seagate Exos X24 24TB Enterprise SATA ST24000NM002H CMR · 5yr | 24TB | SATA-6G 7,200 RPM | CMR | 512MB | 512e | 5yr | $599.99 | new | ▲ | Buy →Details | ▼ |
$25.56 ~ Fair | WD DC HC550 18TB SATA 512MB Enterprise WUH721818ALE6L4 Refurb · 5yr | 18TB | SATA-6G 7,200 RPM | ePMR | 512MB | 512e | 5yr | $460.00 | REFURB | ▼ | Buy →Details | ▼ |
$26.00 ~ Fair | MDD 10TB SATA 6G 7200RPM Enterprise MDD10TSATA25672E CMR · 5yr | 10TB | SATA-6G 7,200 RPM | CMR | 256MB | 512e | 5yr | $259.99 | new | ▲ | Buy →Details | ▼ |
$26.67 ~ Fair | MDD 6TB SATA 6G 7200RPM Enterprise MD6TB6472E CMR · 5yr | 6TB | SATA-6G 7,200 RPM | CMR | 64MB | 512e | 5yr | $159.99 | new | ▲ | Buy →Details | ▼ |
$26.67 ~ Fair | MDD 6TB SATA 6G 7200RPM 128MB Enterprise MD6TSATA12872E CMR · 5yr | 6TB | SATA-6G 7,200 RPM | CMR | 128MB | 512e | 5yr | $159.99 | new | ▲ | Buy →Details | ▼ |
$27.00 ↓ Good | WD Ultrastar 7K4000 4TB SATA NAS HMS5C4040ALE640 Refurb · CMR · | 4TB | SATA-6G 7,200 RPM | CMR | — | 512n | — | $108.00 | REFURB | ▼ | Buy →Details | ▼ |
$28.00 ~ Fair | MDD 10TB SATA 6G 7200RPM NAS MDD10TSATA25672NAS CMR · 5yr | 10TB | SATA-6G 7,200 RPM | CMR | 256MB | 512e | 5yr | $279.99 | new | ▲ | Buy →Details | ▼ |
$28.33 ~ Fair | Seagate IronWolf 6TB SATA NAS ST6000VN001 CMR · 3yr | 6TB | SATA-6G 7,200 RPM | CMR | 128MB | 512e | 3yr | $169.99 | new | ▲ | Buy →Details | ▼ |
$28.50 ~ Fair | Seagate ST4000NM0033 4TB SATA Enterprise ST4000NM0033 CMR · | 4TB | SATA-6G 7,200 RPM | CMR | — | 512n | — | $114.00 | new | ▲ | Buy →Details | ▼ |
$28.50 ~ Fair | Seagate ST4000NM0033 4TB SATA Enterprise ST4000NM0033 Refurb · CMR · | 4TB | SATA-6G 7,200 RPM | CMR | — | 512n | — | $114.00 | REFURB | ▲ | Buy →Details | ▼ |
$28.75 ~ Fair | Seagate Exos X24 24TB SATA ST24000NM000H Refurb · CMR · 5yr | 24TB | SATA-6G 7,200 RPM | CMR | 512MB | 512e | 5yr | $689.97 | REFURB | ▲ | Buy →Details | ▼ |
$30.51 ~ Fair | HGST Ultrastar He10 10TB SATA NAS HUH721010ALN600 Refurb · CMR · 5yr | 10TB | SATA-6G 7,200 RPM | CMR | — | 4Kn | 5yr | $305.13 | REFURB | ▼ | Buy →Details | ▼ |
$30.56 ~ Fair | WD DC HC550 18TB SATA 512MB Enterprise WUH721818ALE6L4 5yr | 18TB | SATA-6G 7,200 RPM | ePMR | 512MB | 512e | 5yr | $549.99 | new | ▼ | Buy →Details | ▼ |
$33.33 ~ Fair | MDD 3TB SATA 6G 7200RPM Enterprise MDD3TSATA6472E CMR · | 3TB | SATA-6G 7,200 RPM | CMR | 64MB | 512n | — | $99.99 | new | ▲ | Buy →Details | ▼ |
$33.33 ↓ Good | WD Red Plus 6TB NAS WD60EFRX Refurb · CMR · 3yr | 6TB | SATA-6G 5,400 RPM | CMR | 64MB | 512e | 3yr | $199.99 | REFURB | ▼ | Buy →Details | ▼ |
$33.63 ~ Fair | Dell T05HP 8TB SATA 6G 512e Certified T05HP Refurb · CMR · | 8TB | SATA-6G 7,200 RPM | CMR | — | 512e | — | $269.00 | REFURB | ▲ | Buy →Details | ▼ |
$34.99 ~ Fair | MDD 2TB SATA 6G 7200RPM MD2TSATA6472E CMR · 5yr | 2TB | SATA-6G 7,200 RPM | CMR | 64MB | 512n | 5yr | $69.99 | new | ▲ | Buy →Details | ▼ |
$35.00 ↑ High | HGST HUS724030ALA640 3TB SATA Enterprise HUS724030ALA640 CMR · | 3TB | SATA-6G 7,200 RPM | CMR | — | 512n | — | $105.00 | new | ▲ | Buy →Details | ▼ |
$36.25 ↑ High | WD Ultrastar 7K4000 4TB SATA NAS HMS5C4040ALE640 CMR · | 4TB | SATA-6G 7,200 RPM | CMR | — | 512n | — | $145.00 | new | ▼ | Buy →Details | ▼ |
$36.25 ~ Fair | Seagate SkyHawk AI 32TB Surveillance HAMR ST32000VE000 CMR · 5yr | 32TB | SATA-6G 7,200 RPM | CMR | 512MB | 512e | 5yr | $1,159.99 | new | ▲ | Buy →Details | ▼ |
$36.36 ~ Fair | Synology HAT5300 20TB NAS Enterprise HAT5310-20T Refurb · CMR · 5yr | 20TB | SATA-6G 7,200 RPM | CMR | 256MB | 512e | 5yr | $727.28 | REFURB | ▼ | Buy →Details | ▼ |
$37.50 ↑ High | Seagate Exos X20 18TB SATA ST18000NM003D 5yr | 18TB | SATA-6G 7,200 RPM | ePMR | 256MB | 512e | 5yr | $675.00 | new | ▼ | Buy →Details | ▼ |
$37.94 ~ Fair | Seagate IronWolf 6TB NAS ST6000VN001 Refurb · CMR · 3yr | 6TB | SATA-6G 5,400 RPM | CMR | 256MB | 512e | 3yr | $227.66 | REFURB | ▲ | Buy →Details | ▼ |
$37.98 ↑ High | HGST Ultrastar He10 10TB SATA NAS HUH721010ALN600 CMR · 5yr | 10TB | SATA-6G 7,200 RPM | CMR | — | 4Kn | 5yr | $379.78 | new | ▼ | Buy →Details | ▼ |
$40.00 ~ Fair | Seagate Exos 32TB SATA HAMR Enterprise ST32000NM004K CMR · 5yr | 32TB | SATA-6G 7,200 RPM | CMR | 512MB | 512e | 5yr | $1,279.99 | new | ▲ | Buy →Details | ▼ |
$40.00 ~ Fair | Seagate Exos M 30TB SATA HAMR Enterprise ST30000NM004K CMR · 5yr | 30TB | SATA-6G 7,200 RPM | CMR | 512MB | 512e | 5yr | $1,199.99 | new | ▲ | Buy →Details | ▼ |
$42.28 ~ Fair | Synology HAT5300 20TB NAS Enterprise HAT5310-20T CMR · 5yr | 20TB | SATA-6G 7,200 RPM | CMR | 256MB | 512e | 5yr | $845.68 | new | ▼ | Buy →Details | ▼ |
$43.33 ~ Fair | Seagate IronWolf 6TB NAS ST6000VN001 CMR · 3yr | 6TB | SATA-6G 5,400 RPM | CMR | 256MB | 512e | 3yr | $259.99 | new | ▲ | Buy →Details | ▼ |
$43.45 ~ Fair | HGST Ultrastar He10 10TB SATA NAS HUH721010ALE600 CMR · 5yr | 10TB | SATA-6G 7,200 RPM | CMR | — | 512e | 5yr | $434.45 | new | ▲ | Buy →Details | ▼ |
$43.50 ~ Fair | Toshiba MG03ACA200 2TB SATA Enterprise MG03ACA200 Refurb · CMR · 5yr | 2TB | SATA-6G 7,200 RPM | CMR | 64MB | 512n | 5yr | $87.00 | REFURB | ▲ | Buy →Details | ▼ |
$43.63 ~ Fair | Seagate IronWolf 8TB NAS ST8000VN0022 Refurb · CMR · 3yr | 8TB | SATA-6G 7,200 RPM | CMR | 256MB | 512e | 3yr | $349.00 | REFURB | ▲ | Buy →Details | ▼ |
$49.36 ~ Fair | Seagate IronWolf Pro 10TB NAS ST10000NE0004 CMR · 5yr | 10TB | SATA-6G 7,200 RPM | CMR | 256MB | 512e | 5yr | $493.57 | new | ▲ | Buy →Details | ▼ |
$49.93 ↑ High | Seagate IronWolf 8TB NAS ST8000VN0022 CMR · 3yr | 8TB | SATA-6G 7,200 RPM | CMR | 256MB | 512e | 3yr | $399.40 | new | ▲ | Buy →Details | ▼ |
$50.00 ~ Fair | WD MegaScale DC 4000.B 4TB SATA Enterprise HMS5C4040ALE640 Refurb · CMR · | 4TB | SATA-6G 7,200 RPM | CMR | — | 512n | — | $199.99 | REFURB | ▲ | Buy →Details | ▼ |
$57.33 ~ Fair | HP MB3000GBKAC 3TB SATA 6G MB3000GBKAC Refurb · CMR · | 3TB | SATA-6G 7,200 RPM | CMR | — | 512n | — | $172.00 | REFURB | ▲ | Buy →Details | ▼ |
$59.67 ↑ High | WD Red Plus 6TB NAS WD60EFRX CMR · 3yr | 6TB | SATA-6G 5,400 RPM | CMR | 64MB | 512e | 3yr | $358.01 | new | ▼ | Buy →Details | ▼ |
$60.00 ↑ High | Toshiba MG03ACA200 2TB SATA Enterprise MG03ACA200 CMR · 5yr | 2TB | SATA-6G 7,200 RPM | CMR | 64MB | 512n | 5yr | $120.00 | new | ▲ | Buy →Details | ▼ |
$— | MDD 18TB SATA 7200RPM 5yr Warranty MDD18TSATA25672E CMR · 5yr | 18TB | SATA-6G 7,200 RPM | CMR | 256MB | 512e | 5yr | $— | — | Buy →Details | ▼ | |
$— | MDD 20TB SATA 7200RPM NAS MD20TS25672NAS CMR · 5yr | 20TB | SATA-6G 7,200 RPM | CMR | 256MB | 512e | 5yr | $— | — | Buy →Details | ▼ | |
$— | MDD 20TB SATA 7200RPM NAS MD20TSATA25672NAS CMR · 5yr | 20TB | SATA-6G 7,200 RPM | CMR | 256MB | 512e | 5yr | $— | — | Buy →Details | ▼ | |
$— | Seagate Exos X20 20TB SATA ST20000NM007D 5yr | 20TB | SATA-6G 7,200 RPM | ePMR | 256MB | 512e | 5yr | $— | — | Buy →Details | ▼ | |
$— | Synology HAT5300 4TB NAS HAT5300-4T CMR · 5yr | 4TB | SATA-6G 7,200 RPM | CMR | 256MB | 512e | 5yr | $— | — | Buy →Details | ▼ | |
$— | Synology HAT5300 8TB NAS HAT5300-8T CMR · 5yr | 8TB | SATA-6G 7,200 RPM | CMR | 256MB | 512e | 5yr | $— | — | Buy →Details | ▼ | |
$— | Synology HAT5300 12TB NAS HAT5300-12T CMR · 5yr | 12TB | SATA-6G 7,200 RPM | CMR | 256MB | 512e | 5yr | $— | — | Buy →Details | ▼ | |
$— | Synology HAT5300 16TB NAS HAT5300-16T CMR · 5yr | 16TB | SATA-6G 7,200 RPM | CMR | 256MB | 512e | 5yr | $— | — | Buy →Details | ▼ | |
$— | Seagate IronWolf 4TB NAS ST4000VN008 CMR · 3yr | 4TB | SATA-6G 5,900 RPM | CMR | 64MB | 512e | 3yr | $— | — | Buy →Details | ▼ | |
$— | Seagate IronWolf 8TB NAS ST8000VNZ04 CMR · 3yr | 8TB | SATA-6G 7,200 RPM | CMR | 256MB | 512e | 3yr | $— | — | Buy →Details | ▼ | |
$— | Seagate IronWolf 12TB NAS ST12000VN0008 CMR · 3yr | 12TB | SATA-6G 7,200 RPM | CMR | 256MB | 512e | 3yr | $— | — | Buy →Details | ▼ | |
$— | Seagate IronWolf 16TB NAS ST16000VN001 CMR · 3yr | 16TB | SATA-6G 7,200 RPM | CMR | 256MB | 512e | 3yr | $— | — | Buy →Details | ▼ | |
$— | Seagate IronWolf Pro 8TB NAS ST8000NE0004 CMR · 5yr | 8TB | SATA-6G 7,200 RPM | CMR | 256MB | 512e | 5yr | $— | — | Buy →Details | ▼ | |
$— | Seagate IronWolf Pro 16TB NAS ST16000NT001 CMR · 5yr | 16TB | SATA-6G 7,200 RPM | CMR | 256MB | 512e | 5yr | $— | — | Buy →Details | ▼ | |
$— | Seagate IronWolf Pro 20TB NAS ST20000NT001 CMR · 5yr | 20TB | SATA-6G 7,200 RPM | CMR | 256MB | 512e | 5yr | $— | — | Buy →Details | ▼ | |
$— | Seagate IronWolf Pro 20TB NAS ST20000NEZ00 CMR · 5yr | 20TB | SATA-6G 7,200 RPM | CMR | 256MB | 512e | 5yr | $— | — | Buy →Details | ▼ | |
$— | WD Red Plus 8TB NAS WD80EFZZ CMR · 3yr | 8TB | SATA-6G 5,640 RPM | CMR | 128MB | 512e | 3yr | $— | — | Buy →Details | ▼ | |
$— | WD Red Plus 8TB NAS WD80EFPX CMR · 3yr | 8TB | SATA-6G 5,640 RPM | CMR | 128MB | 512e | 3yr | $— | — | Buy →Details | ▼ | |
$— | Toshiba N300 4TB NAS HDWG440XZSTA CMR · 3yr | 4TB | SATA-6G 7,200 RPM | CMR | 128MB | 512e | 3yr | $— | — | Buy →Details | ▼ | |
$— | Toshiba N300 6TB NAS HDWG460XZSTA CMR · 3yr | 6TB | SATA-6G 7,200 RPM | CMR | 256MB | 512e | 3yr | $— | — | Buy →Details | ▼ | |
$— | Toshiba N300 8TB NAS HDWG780XZSTA CMR · 3yr | 8TB | SATA-6G 7,200 RPM | CMR | 512MB | 512e | 3yr | $— | — | Buy →Details | ▼ | |
$— | Toshiba N300 10TB NAS HDWG7AXZSTA CMR · 3yr | 10TB | SATA-6G 7,200 RPM | CMR | 256MB | 512e | 3yr | $— | — | Buy →Details | ▼ | |
$— | Toshiba N300 12TB NAS HDWG21CXZSTA CMR · 3yr | 12TB | SATA-6G 7,200 RPM | CMR | 256MB | 512e | 3yr | $— | — | Buy →Details | ▼ | |
$— | Toshiba N300 16TB NAS HDWG31GUZSVA CMR · 3yr | 16TB | SATA-6G 7,200 RPM | CMR | 512MB | 512e | 3yr | $— | — | Buy →Details | ▼ | |
$— | Toshiba N300 18TB NAS HDWG51JUZSVA CMR · 3yr | 18TB | SATA-6G 7,200 RPM | CMR | 512MB | 512e | 3yr | $— | — | Buy →Details | ▼ | |
$— | Seagate IronWolf Pro 32TB NAS HAMR ST32000NT000 CMR · 5yr | 32TB | SATA-6G 7,200 RPM | CMR | 512MB | 512e | 5yr | $— | — | Buy →Details | ▼ |
Exos and Ultrastar are rated for 550TB/yr workload with 2.5M-hour MTBF. IronWolf Pro and Red Pro target 300TB/yr in NAS enclosures. Both are suitable for 24/7 operation - choose enterprise for SAN/server, NAS-grade for Synology/QNAP.
CMR is the proven standard, safe for all RAID levels. ePMR (WD HC550 18TB+) is a CMR variant using energy-assisted recording - fully RAID compatible. HAMR (Seagate Exos 30/32TB) is the newest technology; verify controller and firmware compatibility.
Seagate Expansion and WD Easystore external drives often contain the same Exos or Ultrastar mechanisms at significantly lower $/TB than buying bare internal drives. Remove the enclosure and use the drive directly in your server.
Most modern controllers and operating systems handle both sector formats. Legacy HBAs manufactured before 2012 may require 512e drives. Always check your controller's compatibility before purchasing 4Kn drives.
Seagate Exos is rated for 550TB/year workloads in rack-mount server environments. IronWolf Pro is rated 300TB/year for NAS enclosures. Both use CMR recording and are RAID-safe. Exos suits datacenter and server deployments; IronWolf suits Synology, QNAP and similar NAS boxes.
Energy-Assisted Perpendicular Magnetic Recording (ePMR) is Western Digital's recording technology used in Ultrastar HC550, HC570 and HC580 drives. It is fully compatible with standard SATA controllers and behaves identically to CMR for the host system. No special firmware or drivers are required.
CMR (Conventional Magnetic Recording) is always preferred for NAS and RAID. SMR drives have slower random write performance which can cause RAID rebuild timeouts and NAS firmware compatibility issues. All enterprise SATA drives listed on this page use CMR.
512e (512-byte emulation) presents 512-byte sectors to the host while using 4K physical sectors internally. 4Kn (4K native) uses 4K sectors throughout. Most modern controllers handle both. If using a controller or HBA older than 2012, verify 512e support before purchasing a 4Kn drive.