Hardware Spec Index

Altrix HD-4939 Pro 20TB 7,200 RPM CMR Enterprise Hard Drive

Hard Drives · Altrix · SKU HD4939-PRO · Released 2023 · Updated 2026-10-26

Key facts

Benchmark index3,100 (Hard Drives scale)
Category rank#22,297
Street price$519
Power8 W
Performance per dollar5.97
Released2023

Specifications

BrandAltrix
ModelAltrix HD-4939 Pro
Capacity20 TB
ClassEnterprise
RecordingCMR (conventional magnetic recording)
Spindle speed7,200 RPM
Cache512 MB
InterfaceSAS 12 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
Mirenta HD-7815 XT 20TB 7,200 RPM CMR Enterprise Hard Drive3,042$529Compare
Mirenta HD-2604 Pro 16TB 7,200 RPM CMR Enterprise Hard Drive2,003$249Compare
Mirenta HD-6234 Ti 20TB 7,200 RPM CMR NAS Hard Drive2,649$469Compare
Strivon HD-2512 Core 20TB 7,200 RPM CMR NAS Hard Drive2,842$529Compare
Mirenta HD-1625 SE 24TB 7,200 RPM CMR NAS Hard Drive2,192$299Compare
Novexa HD-3505 Max 24TB 7,200 RPM CMR NAS Hard Drive2,834$499Compare

All Hard Drives · JSON

Cite this page: Hardware Spec Index, “Altrix HD-4939 Pro 20TB 7,200 RPM CMR Enterprise Hard Drive”, https://vextor7.com/item/597093 (accessed 2026-10-26).