Enterprise Hard Drives — SAS, SATA, 10K & 15K RPM

Seagate Exos, WD Ultrastar, Toshiba, HGST. 1 TB - 22 TB. Tested for 24/7 duty.

About Enterprise Hard Drives

Enterprise hard drives are not just bigger — they're built for continuous 24/7 duty, higher vibration tolerance, longer MTBF, and deeper command queues than consumer drives. Pro Disk Network stocks the full range of enterprise HDDs: Seagate Exos, WD Ultrastar, Toshiba Enterprise, and HGST — in SAS (12 Gbps) and SATA (6 Gbps) interfaces, 7.2K/10K/15K RPM, and capacities from 1 TB to 22 TB.

Enterprise drives carry a 5-year warranty (versus 1-2 years for consumer drives), ship pre-formatted to 512e or 4Kn sectors per customer spec, and are validated against HP ProLiant, Dell PowerEdge, Cisco UCS, Lenovo ThinkSystem, NetApp, and Supermicro server families. We ship same-day from US inventory with free ground shipping on orders over $150.

SAS vs SATA: which should you buy?

  • SAS — full-duplex 12 Gbps, dual-port for multipath, better error handling, choose for production databases and VMware storage
  • SATA — half-duplex 6 Gbps, single port, cheaper per TB, ideal for backups, archives, cold storage
  • 7.2K RPM — nearline / capacity-oriented workloads (backup, file servers, video surveillance)
  • 10K / 15K RPM — performance-oriented workloads (transactional DBs, VDI, OLTP) — SAS only

For performance tiers that used to use 15K SAS, modern deployments typically use SATA/NVMe SSDs (10× faster, same cost). 15K SAS is still valuable for legacy app compatibility and cost-sensitive cached read workloads.

Featured Enterprise Hard Drives Products

Browse all 102,919 Enterprise Hard Drives SKUs.

Enterprise Hard Drives in stock, by capacity

Live count of enterprise hard drives that are priced, photographed and ready to ship, taken from our own catalogue on 16 September 2026. Prices are what you pay, not a list price.

CapacityDrives availablePrice rangeAverage
9GB1,722$41.21 – $1,053.85$229.19
18GB2,292$42.65 – $1,057.14$213.81
36GB3,317$36.00 – $1,819.67$228.75
73GB3,966$36.00 – $3,960.65$216.85
146GB3,875$36.00 – $12,054.50$258.79
300GB4,870$36.00 – $10,455.89$374.94
450GB1,163$36.00 – $6,716.92$373.76
600GB3,311$36.00 – $15,888.03$512.17
900GB1,255$36.00 – $5,461.62$513.63
1TB3,688$36.00 – $13,817.60$429.88
2TB2,091$41.60 – $17,764.00$415.53
4TB1,383$64.00 – $8,653.13$538.61

Need several of one capacity? Paste the part numbers into the quick order pad, or ask for a bulk quote.

Frequently Asked Questions

What is the difference between enterprise and consumer hard drives?

Enterprise drives are designed for 24/7 continuous operation (workload rating: ~550 TB/year vs ~55 TB/year for consumer), carry 5-year warranties (vs 1-2 years), tolerate vibration from neighboring drives in dense rack-mount chassis, have Time-Limited Error Recovery (TLER) so RAID arrays don't drop drives during recoverable errors, and support 4K native sectors and SAS interface (consumer drives are SATA-only). The MTBF is typically 2-2.5 million hours (enterprise) vs 1 million (consumer).

Are Seagate Exos and WD Ultrastar interchangeable?

For most applications yes — both are JEDEC-spec enterprise SATA/SAS drives in standard 3.5" or 2.5" form factors with identical electrical interfaces. The main differences are firmware behavior (command queue depth, error recovery timing) and specific RAID controller certifications (check your HP Smart Array / Dell PERC / LSI compatibility matrix). Mixing Exos and Ultrastar within the same RAID volume is allowed but not ideal for performance-sensitive arrays.

Do I need SAS drives for a RAID array?

No — modern RAID controllers (HPE Smart Array, Dell PERC H730/H740/H745, LSI MegaRAID) support both SAS and SATA drives, often in the same backplane. For most workloads, SATA enterprise drives + a good controller work perfectly. Choose SAS if you need: dual-port multipathing for high availability, full-duplex I/O for write-intensive databases, or the deeper command queue (255 vs 32 on SATA) for heavy concurrent workloads.

What capacity enterprise hard drive should I buy?

For general-purpose server storage, 4 TB to 12 TB is the sweet spot on cost-per-TB. For backup/archive workloads, 16-22 TB maximizes density. For high-performance arrays, choose multiple smaller drives (8× 4 TB beats 2× 16 TB on IOPS). Beware: drives over 16 TB typically use SMR (Shingled Magnetic Recording) which has terrible random-write performance — verify the drive is CMR (Conventional Magnetic Recording) for production use. Our listings specify recording type.

How long do enterprise hard drives last?

Enterprise drives are rated for 5 years of continuous 24/7 operation and 550 TB/year of read/write workload. In practice, well-cooled enterprise drives often last 7-10 years in production environments. Annual failure rate (AFR) from Backblaze's public datasets shows enterprise SAS/SATA drives at 0.5-1.5% AFR in year 1-3, rising to 2-3% by year 5. Plan your refresh cycle at year 4-5 for mission-critical arrays.

Related Pages

Part of

Enterprise Storage Hub

View all 171 pages →

Enterprise HDDs, SSDs, NVMe, SAS, SATA, RAID controllers, drive caddies and storage array hardware.

Related Pages