Hardware Spec Index

Altrix HD-4821 Pro 20TB 7,200 RPM CMR Enterprise Hard Drive

Hard Drives · Altrix · SKU HD4821-PRO · Released 2024 · Updated 2026-10-22

Key facts

Benchmark index2,189 (Hard Drives scale)
Category rank#24,369
Street price$269
Power8 W
Performance per dollar8.14
Released2024

Specifications

BrandAltrix
ModelAltrix HD-4821 Pro
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
Strivon HD-2485 Ultra 4TB 5,400 RPM SMR Desktop Hard Drive1,370$129Compare
Novexa HD-6770 Max 20TB 7,200 RPM CMR NAS Hard Drive2,545$399Compare
Mirenta HD-7161 Plus 4TB 5,400 RPM CMR Surveillance Hard Drive858$59Compare
Mirenta HD-9896 Plus 4TB 5,400 RPM SMR Desktop Hard Drive1,281$109Compare
Strivon HD-8551 Plus 12TB 7,200 RPM CMR Desktop Hard Drive1,918$239Compare
Altrix HD-7419 Max 8TB 7,200 RPM CMR NAS Hard Drive1,759$189Compare

All Hard Drives · JSON

Cite this page: Hardware Spec Index, “Altrix HD-4821 Pro 20TB 7,200 RPM CMR Enterprise Hard Drive”, https://vextor7.com/item/2945236 (accessed 2026-10-22).