Hardware Spec Index

Altrix HD-4642 Ultra 20TB 7,200 RPM CMR Enterprise Hard Drive

Hard Drives · Altrix · SKU HD4642-ULTRA · Released 2020 · Updated 2026-10-21

Key facts

Benchmark index2,226 (Hard Drives scale)
Category rank#13,587
Street price$339
Power8 W
Performance per dollar6.57
Released2020

Specifications

BrandAltrix
ModelAltrix HD-4642 Ultra
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
Novexa HD-4691 Core 8TB 7,200 RPM CMR Desktop Hard Drive1,577$189Compare
Mirenta HD-7238 XT 24TB 7,200 RPM CMR Enterprise Hard Drive3,062$569Compare
Strivon HD-8717 Prime 2TB 5,400 RPM SMR Desktop Hard Drive838$59Compare
Mirenta HD-7572 SE 12TB 7,200 RPM CMR NAS Hard Drive2,140$259Compare
Strivon HD-1738 Prime 4TB 5,400 RPM SMR Desktop Hard Drive1,131$89Compare
Novexa HD-4265 Edge 4TB 5,400 RPM CMR Surveillance Hard Drive1,444$129Compare

All Hard Drives · JSON

Cite this page: Hardware Spec Index, “Altrix HD-4642 Ultra 20TB 7,200 RPM CMR Enterprise Hard Drive”, https://vextor7.com/item/7447359 (accessed 2026-10-21).