Hardware Spec Index

Novexa HD-9905 Ultra 20TB 7,200 RPM CMR NAS Hard Drive

Hard Drives · Novexa · SKU HD9905-ULTRA · Released 2025 · Updated 2026-10-21

Key facts

Benchmark index2,721 (Hard Drives scale)
Category rank#1,630
Street price$429
Power8 W
Performance per dollar6.34
Released2025

Specifications

BrandNovexa
ModelNovexa HD-9905 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
Mirenta HD-3404 XT 4TB 5,400 RPM CMR Surveillance Hard Drive907$69Compare
Novexa HD-8728 Pro 12TB 7,200 RPM SMR Desktop Hard Drive1,784$199Compare
Strivon HD-8724 Edge 2TB 5,400 RPM SMR Desktop Hard Drive658$59Compare
Strivon HD-6863 Ti 20TB 7,200 RPM CMR Enterprise Hard Drive2,275$369Compare
Novexa HD-3435 Pro 24TB 7,200 RPM CMR NAS Hard Drive2,582$479Compare
Novexa HD-3485 Prime 12TB 7,200 RPM SMR Desktop Hard Drive2,066$249Compare

All Hard Drives · JSON

Cite this page: Hardware Spec Index, “Novexa HD-9905 Ultra 20TB 7,200 RPM CMR NAS Hard Drive”, https://vextor7.com/item/8895541 (accessed 2026-10-21).