Best Enterprise Hard Drives
Enterprise-grade drives designed for 24/7 server and datacenter workloads. Seagate Exos and Western Digital Ultrastar lines offer higher endurance, longer warranties, and vibration tolerance for multi-drive chassis.
Quick Verdict
- Who this is for
- Homelab builders, server admins, and anyone needing 24/7-rated drives with high endurance and long warranties.
- What usually wins
- The lowest price-per-TB Exos or Ultrastar at your target capacity. Refurbished enterprise pulls for non-critical or homelab storage.
- Prioritise
- Lowest price per TB among 24/7-rated drives. New for production; refurbished for homelab and backup.
Prices updated daily from Amazon.com. All links go directly to the retailer. Details.
Bottom line: the lowest price-per-TB pick on this page right now is the Seagate Exos x10 10TB SATA 6Gb/s 256MB Cache Enterprise Hard Drive 3.5" (ST10000NM0086), 10 TB used, at $239.00 ($23.90/TB) on Amazon.com. Check the current price.
New Enterprise Drives
Brand-new datacenter drives with full manufacturer warranty. Ideal for production servers where warranty coverage and known provenance matter.
HGST Ultrastar 7K6000 HUS726060ALE610 0F23001 6TB 7200 RPM SATA 3.5" 512E ISE 128MB Cache Enterprise Hard Drive
Seagate ST10000NM0146 10TB Exos X10 HDD SATA 3.5 7200 256MB External Hard Drives
Hitachi HGST Ultrastar He10 | HUH721010ALN600 | 0F27502 | 10TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" 4Kn Helium Platform Enterprise Hard Drive Bare Drive
Seagate EXOS X20 18TB SAS 3.5IN 7200RPM 6GB/S 512E/4K
SAS interface. Needs a host bus adapter, it will not plug into a normal motherboard.
ST14000NM0048 Seagate 14TB SAS 12 Gb/s (Not SATA) Exos X14 (New with Warranty) 3.5 Inch 7200 RPM 256MB Cache 512e 4Kn Enterprise Hard Drive HDD
SAS interface. Needs a host bus adapter, it will not plug into a normal motherboard.
Seagate-IMSourcing Exos X16 ST12000NM003G 12 TB Hard Drive - Internal - SATA [SATA/600]
Western Digital WUH721414ALE6L4 14TB Ultrastar DC HC530 SATA HDD - 7200 RPM Class, SATA 6 Gb/s, 512MB Cache, 3.5"
Seagate Exos X24 16TB Enterprise Internal Hard Drive HDD - 6GB/s SAS 7200RPM 2.5M MTBF (ST16000NM002H)
SAS interface. Needs a host bus adapter, it will not plug into a normal motherboard.
Refurbished Enterprise Drives
Recertified datacenter pulls at significant discounts. Tested before resale, these offer strong value for homelabs and non-critical storage.
Seagate Enterprise ST3000NM0025 3TB 7200RPM SAS 12.0 GB/s 128MB 512n Enterprise Hard Drive (3.5 inch, Exos 7E8 HDD 512N SAS)
SAS interface. Needs a host bus adapter, it will not plug into a normal motherboard.
Seagate Exos x10 10TB SATA 6Gb/s 256MB Cache Enterprise Hard Drive 3.5" (ST10000NM0086)
Seagate Exos X14 ST14000NM0408 14TB 7.2K RPM CMR SATA 6Gb/s 512e 3.5in Hard Drive (Renewed)
Seagate/IBM Exos X16 16TB Enterprise Hard Drive HDD SAS 12Gb/s 256MB Cache 7200 RPM 4Kn CMR Helium Sealed 3.5in Hard Drive ST16000NM002G (Renewed)
SAS interface. Needs a host bus adapter, it will not plug into a normal motherboard.
Seagate Exos x12 12TB SATA 6Gb/s 256MB Cache Enterprise Hard Drive 3.5in (ST12000NM0127) (Renewed)
Seagate Exos 7E8 6TB 7200 RPM 512e SAS 12Gb/s 256MB Cache 3.5-Inch Enterprise Hard Drive - ST6000NM0095 (Renewed)
SAS interface. Needs a host bus adapter, it will not plug into a normal motherboard.
Seagate Exos X14 ST12000NM0008 12 TB Hard Drive - 3.5" Internal - SATA (SATA/600)
Western Digital HGST Ultrastar He10 HUH721008AL5204 8 TB Hard Drive - 3.5" Internal - SAS (12Gb/s SAS) - 7200rpm - 256 MB Buffer - 5 Year Warranty
SAS interface. Needs a host bus adapter, it will not plug into a normal motherboard.
High-Capacity Enterprise (14 TB+)
Dense storage for servers and JBODs. Larger enterprise drives reduce the number of bays and HBAs needed, lowering total system cost.
Seagate EXOS X20 18TB SAS 3.5IN 7200RPM 6GB/S 512E/4K
SAS interface. Needs a host bus adapter, it will not plug into a normal motherboard.
ST14000NM0048 Seagate 14TB SAS 12 Gb/s (Not SATA) Exos X14 (New with Warranty) 3.5 Inch 7200 RPM 256MB Cache 512e 4Kn Enterprise Hard Drive HDD
SAS interface. Needs a host bus adapter, it will not plug into a normal motherboard.
Western Digital WUH721414ALE6L4 14TB Ultrastar DC HC530 SATA HDD - 7200 RPM Class, SATA 6 Gb/s, 512MB Cache, 3.5"
Seagate Exos X24 16TB Enterprise Internal Hard Drive HDD - 6GB/s SAS 7200RPM 2.5M MTBF (ST16000NM002H)
SAS interface. Needs a host bus adapter, it will not plug into a normal motherboard.
Seagate ST18000NM003D 18TB Exos X20 SATA Hard Drive, 3.5" HDD, SATA 6Gb/s, 7200rpm, 256MB Cache, 512E, 4.16ms, NCQ
Western Digital Ultrastar DC HC550 16 TB Hard Drive - 3.5 Internal - SAS [12Gb/s SAS]
SAS interface. Needs a host bus adapter, it will not plug into a normal motherboard.
Seagate 14TB HDD Exos X14 7200 RPM 512e/4Kn SATA 6Gb/s 256MB Cache 3.5-Inch Enterprise Hard Drive (ST14000NM0018)
Seagate Exos X18 ST18000NM005J 18 TB Hard Drive - Internal - SAS (12Gb/s SAS) - 7200rpm - 5 Year Warranty
SAS interface. Needs a host bus adapter, it will not plug into a normal motherboard.
How to Choose
Enterprise drives are over-engineered for datacenter duty. Here is how to pick the right one without overspending.
Exos vs Ultrastar
Both target the same workloads and carry similar specs (550 TB/year, 2.5M-hour MTBF, 5-year warranty). The choice usually comes down to whichever is cheaper at your target capacity.
New vs refurbished
New enterprise drives include a full 5-year manufacturer warranty. Refurbished datacenter pulls are often 40–60% cheaper and still have substantial life. Enterprise drives are rated for 2M+ hours MTBF.
Interface
Most consumer and homelab builds use SATA. SAS models require an HBA and are typically found in server and JBOD setups. Verify your controller supports the interface before buying.
Capacity and density
Higher-capacity enterprise drives reduce the number of bays and HBAs needed, lowering total system cost. At 14 TB+, all models are helium-sealed.
Frequently Asked Questions
What is an enterprise hard drive?
Enterprise drives are built for datacenter use, 24/7 operation, higher vibration tolerance, longer warranties (typically 5 years), and higher workload ratings (up to 550 TB/year). Common lines include the Seagate Exos and WD Ultrastar. They cost more new but are often available refurbished at steep discounts.
Can I use enterprise drives in a home NAS?
Absolutely. Enterprise drives work great in home NAS setups. They are overbuilt for the workload and extremely reliable. The main trade-offs are noise (7200 RPM with no idle-down) and power consumption. If noise is not a concern, refurbished enterprise drives offer the best value for home NAS storage.
Seagate Exos vs WD Ultrastar, which is better?
Both are excellent enterprise lines with similar reliability. Exos drives tend to be slightly cheaper and more widely available refurbished. Ultrastar drives (especially the HC500 series) have a strong reputation for longevity. In practice, the best one to buy is whichever has the lowest price per TB at your target capacity.
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