Hardware Spec Index

Novexa HD-3921 Prime 20TB 7,200 RPM CMR NAS Hard Drive

Hard Drives · Novexa · SKU HD3921-PRIME · Released 2021 · Updated 2026-10-24

Key facts

Benchmark index2,434 (Hard Drives scale)
Category rank#40,935
Street price$449
Power8 W
Performance per dollar5.42
Released2021

Specifications

BrandNovexa
ModelNovexa HD-3921 Prime
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

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Cite this page: Hardware Spec Index, “Novexa HD-3921 Prime 20TB 7,200 RPM CMR NAS Hard Drive”, https://vextor7.com/item/319545 (accessed 2026-10-24).