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
03T7739 - Lenovo 900GB 10000RPM SAS 6Gbps 2.5-inch Enterprise Hard Drive$152.00
AL13SXB45EN - HP 450GB SAS 12Gb/s 15000RPM 3.5-inch Enterprise Hard Drive
03T7732 - Lenovo 3TB 7200RPM SAS 6Gb/s 3.5-inch Enterprise Hard Drive$545.88
03T7738 - Lenovo 600GB 10000RPM SAS 6Gb/s 2.5-inch Enterprise Hard Drive$205.38
03T7783 - Lenovo 500GB 7200RPM SATA 3.5-inch Enterprise Hard Drive for ThinkSer…$265.35
118032840 - EMC 3TB 7200RPM SAS 6Gb/s 3.5-inch Enterprise Hard Drive$463.7891Y1654 - Lenovo 500GB 7200RPM SATA 3.5-inch Enterprise Hard Drive for ThinkSer…$254.51
0C19501 - Lenovo 500GB 7200RPM SATA 3.5-inch Enterprise Hard Drive for ThinkSer…$118.40
4XB0K12303 - Lenovo 300GB 10000RPM SAS 12Gb/s 2.5-inch Enterprise Hard Drive$330.340JG1T2 - Dell 600GB 10000RPM SAS 12Gb/s SFF 2.5-inch Enterprise Hard Drive$152.61
JG1T2 - Dell 600GB 10000RPM SAS 12Gb/s SFF 2.5-inch Enterprise Hard Drive$149.82
ST2000NX0323 - Seagate 2TB SAS 12Gb/s 128MB Cache 2.5-inch Enterprise Hard Drive$217.60
J9F49A - HP 1.8TB 10000RPM SAS 12Gb/s 512e 2.5-inch Enterprise Hard Drive$212.00
Hat5300-16T - Synology 16Tb Hat5300 Sata Iii 3.5 Inch Internal Enterprise Hard …$857.60
880152-001 - HP 300GB SAS 12Gb/s 15000RPM 2.5-inch Enterprise Hard Drive$112.00
873036-001 - HP 1.2TB 10000RPM SAS 12Gb/s 2.5-inch Enterprise Hard Drive$132.00
634603-002 - HP 250GB 7200RPM SATA 6Gb/s 3.5-inch Enterprise Hard Drive$105.60
870797-001 - HPE 600GB 15000RPM SAS 12Gb/s 2.5-inch Enterprise Hard Drive$212.00
Browse all 102,827 Enterprise Hard Drives SKUs.
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.