Hardware Spec Index

Altrix HD-3815 Ultra 20TB 7,200 RPM CMR NAS Hard Drive

Hard Drives · Altrix · SKU HD3815-ULTRA · Released 2020 · Updated 2026-10-19

Key facts

Benchmark index2,416 (Hard Drives scale)
Category rank#45,031
Street price$369
Power8 W
Performance per dollar6.55
Released2020

Specifications

BrandAltrix
ModelAltrix HD-3815 Ultra
Capacity20 TB
ClassNAS
RecordingCMR (conventional magnetic recording)
Spindle speed7,200 RPM
Cache512 MB
InterfaceSATA 6 Gb/s
Sustained transfer280 MB/s
Workload rating300 TB/year
MTBF1.2 million hours
Helium-filledYes
Warranty3 years

Related guides

CMR vs SMR Hard DrivesNAS RAID Levels Explained

Similar Hard Drives

ModelBenchmarkPriceCompare
Mirenta HD-9113 Ti 8TB 7,200 RPM CMR Desktop Hard Drive1,682$189Compare
Mirenta HD-4759 Ultra 8TB 7,200 RPM CMR NAS Hard Drive1,417$159Compare
Mirenta HD-2394 Plus 8TB 7,200 RPM CMR Desktop Hard Drive1,188$109Compare
Altrix HD-3982 Prime 4TB 5,400 RPM SMR Desktop Hard Drive1,334$119Compare
Mirenta HD-8195 Ultra 8TB 7,200 RPM CMR Desktop Hard Drive1,685$199Compare
Novexa HD-5770 XT 2TB 5,400 RPM SMR Desktop Hard Drive706$59Compare

All Hard Drives · JSON

Cite this page: Hardware Spec Index, “Altrix HD-3815 Ultra 20TB 7,200 RPM CMR NAS Hard Drive”, https://vextor7.com/item/4133136 (accessed 2026-10-19).