Hardware Spec Index

Altrix HD-3906 Ultra 20TB 7,200 RPM CMR Enterprise Hard Drive

Hard Drives · Altrix · SKU HD3906-ULTRA · Released 2019 · Updated 2026-10-19

Key facts

Benchmark index3,100 (Hard Drives scale)
Category rank#29,132
Street price$559
Power8 W
Performance per dollar5.55
Released2019

Specifications

BrandAltrix
ModelAltrix HD-3906 Ultra
Capacity20 TB
ClassEnterprise
RecordingCMR (conventional magnetic recording)
Spindle speed7,200 RPM
Cache512 MB
InterfaceSATA 6 Gb/s
Sustained transfer280 MB/s
Workload rating550 TB/year
MTBF2.5 million hours
Helium-filledYes
Warranty5 years

Related guides

CMR vs SMR Hard DrivesNAS RAID Levels Explained

Similar Hard Drives

ModelBenchmarkPriceCompare
Altrix HD-9100 Max 8TB 7,200 RPM CMR Surveillance Hard Drive1,714$179Compare
Mirenta HD-3508 XT 4TB 5,400 RPM SMR Desktop Hard Drive879$59Compare
Novexa HD-3695 Core 24TB 7,200 RPM CMR Enterprise Hard Drive2,366$319Compare
Novexa HD-2495 Prime 12TB 7,200 RPM CMR Surveillance Hard Drive1,880$249Compare
Novexa HD-6503 Ultra 12TB 7,200 RPM SMR Desktop Hard Drive1,727$229Compare
Novexa HD-5964 Ti 2TB 5,400 RPM CMR Surveillance Hard Drive782$69Compare

All Hard Drives · JSON

Cite this page: Hardware Spec Index, “Altrix HD-3906 Ultra 20TB 7,200 RPM CMR Enterprise Hard Drive”, https://vextor7.com/item/18308452 (accessed 2026-10-19).