Hardware Spec Index

Altrix HD-8518 Ultra 20TB 7,200 RPM CMR NAS Hard Drive

Hard Drives · Altrix · SKU HD8518-ULTRA · Released 2025 · Updated 2026-10-22

Key facts

Benchmark index2,472 (Hard Drives scale)
Category rank#1,433
Street price$349
Power8 W
Performance per dollar7.08
Released2025

Specifications

BrandAltrix
ModelAltrix HD-8518 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
Novexa HD-7423 SE 16TB 7,200 RPM CMR Enterprise Hard Drive2,541$399Compare
Mirenta HD-7909 Edge 8TB 7,200 RPM CMR NAS Hard Drive2,012$259Compare
Mirenta HD-6521 Plus 2TB 5,400 RPM SMR Desktop Hard Drive712$59Compare
Strivon HD-3732 Core 20TB 7,200 RPM CMR NAS Hard Drive2,787$519Compare
Novexa HD-9749 Max 4TB 5,400 RPM SMR Desktop Hard Drive803$59Compare
Altrix HD-4405 Ti 4TB 5,400 RPM SMR Desktop Hard Drive1,013$79Compare

All Hard Drives · JSON

Cite this page: Hardware Spec Index, “Altrix HD-8518 Ultra 20TB 7,200 RPM CMR NAS Hard Drive”, https://vextor7.com/item/14901152 (accessed 2026-10-22).