2x HGST 6.00 TB SAS HDD 3.5" LFF 7,200 RPM · 3.5" LFF · Enterprise Helium-Sealed Every drive fully tested — printed report included Full 10+ hour diagnostic on every drive. Every drive undergoes the same SMART extended self-test the manufacturer uses. Health screening, sector analysis, I/O benchmarks, and complete power-on history. Each drive ships with a printed test report. Enterprise helium drives, built for decades of service. These are enterprise helium-sealed drives rated for 2,000,000 hours MTBF (mean time between failures) — over 228 years of continuous operation. With under 28,738 hours logged, these drives have used less than 1.4% of their rated reliability life. What's Included Drive 1 6.00 TB SAS TESTED Form Factor 3.5" LFF (Large Form Factor) Capacity 6.00 TB Interface SAS Power-On Hours 28,738 (1.4% of rated life used) SMART Health PASSED Extended Self-Test PASSED Grown Defects 0 Seq Read / Write 216 / 216 MB/s Manufacture Year 2017 Firmware NA00 RPM 7,200 MTBF Rating 2,000,000 hours Drive 2 6.00 TB SAS TESTED Form Factor 3.5" LFF (Large Form Factor) Capacity 6.00 TB Interface SAS Power-On Hours 28,738 (1.4% of rated life used) SMART Health PASSED Extended Self-Test PASSED Grown Defects 0 Seq Read / Write 216 / 215 MB/s Manufacture Year 2017 Firmware NA00 RPM 7,200 MTBF Rating 2,000,000 hours Matched Set Both drives are from the same production year (2017) with matching model and firmware. Ideal for RAID, ZFS mirrors, or Unraid parity. HGST: The Reliability Standard HGST drives have consistently ranked among the most reliable in Backblaze's published drive statistics, which track failure rates across hundreds of thousands of drives in production data centers. These enterprise drives use HGST's HelioSeal helium-sealed technology — reducing internal turbulence, heat, and wear. They carry a 2,000,000 hour MTBF rating and were designed for continuous 24/7 datacenter operation. Power-On Hours % of Rated Life Assessment 0 – 30,000 < 1.5% Low hours — vast majority of rated life remaining 30,000 – 50,000 1.5% – 2.5% Well within rated service life 50,000+ 2.5%+ Still under 3% of rated reliability life Verification Each drive ships with a printed test report including the full serial number and all test results. You can verify your drive's test data online after delivery using the serial number on the printed report. Condition: Used — Tested Working. Full diagnostic completed.
Warranty: 30-day warranty. If any drive fails within 30 days of delivery, we'll replace it or issue a full refund.
Shipping: Free shipping via USPS Priority Mail. Tested and verified by drive-flip