Hardware Spec Index

Altrix HD-2521 XT 20TB 7,200 RPM CMR NAS Hard Drive

Hard Drives · Altrix · SKU HD2521-XT · Released 2026 · Updated 2026-10-27

Key facts

Benchmark index2,869 (Hard Drives scale)
Category rank#20,569
Street price$469
Power8 W
Performance per dollar6.12
Released2026

Specifications

BrandAltrix
ModelAltrix HD-2521 XT
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-5513 Edge 6TB 5,400 RPM CMR NAS Hard Drive1,698$189Compare
Strivon HD-8740 Core 2TB 5,400 RPM CMR Surveillance Hard Drive1,001$79Compare
Strivon HD-6422 Prime 6TB 5,400 RPM CMR Surveillance Hard Drive1,120$79Compare
Altrix HD-1580 SE 24TB 7,200 RPM CMR Enterprise Hard Drive2,726$479Compare
Novexa HD-8266 Edge 2TB 5,400 RPM SMR Desktop Hard Drive899$69Compare
Novexa HD-3294 Ultra 2TB 5,400 RPM CMR Surveillance Hard Drive831$59Compare

All Hard Drives · JSON

Cite this page: Hardware Spec Index, “Altrix HD-2521 XT 20TB 7,200 RPM CMR NAS Hard Drive”, https://vextor7.com/item/65022973 (accessed 2026-10-27).