Hardware Spec Index

Novexa HD-4847 Ultra 20TB 7,200 RPM CMR NAS Hard Drive

Hard Drives · Novexa · SKU HD4847-ULTRA · Released 2020 · Updated 2026-10-19

Key facts

Benchmark index2,708 (Hard Drives scale)
Category rank#24,710
Street price$459
Power8 W
Performance per dollar5.90
Released2020

Specifications

BrandNovexa
ModelNovexa HD-4847 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
Altrix HD-6265 Ultra 28TB 7,200 RPM CMR Enterprise Hard Drive3,015$539Compare
Altrix HD-6138 Pro 6TB 5,400 RPM CMR Desktop Hard Drive1,493$129Compare
Novexa HD-4826 Ti 4TB 5,400 RPM CMR Desktop Hard Drive1,430$119Compare
Novexa HD-4056 SE 2TB 5,400 RPM SMR Desktop Hard Drive1,157$89Compare
Strivon HD-4432 SE 24TB 7,200 RPM CMR Enterprise Hard Drive3,100$499Compare
Mirenta HD-7678 Ultra 20TB 7,200 RPM CMR Enterprise Hard Drive2,925$509Compare

All Hard Drives · JSON

Cite this page: Hardware Spec Index, “Novexa HD-4847 Ultra 20TB 7,200 RPM CMR NAS Hard Drive”, https://vextor7.com/item/45300429 (accessed 2026-10-19).