Hardware Spec Index

Novexa HD-3688 Ultra 20TB 7,200 RPM CMR NAS Hard Drive

Hard Drives · Novexa · SKU HD3688-ULTRA · Released 2021 · Updated 2026-10-19

Key facts

Benchmark index2,785 (Hard Drives scale)
Category rank#24,758
Street price$469
Power8 W
Performance per dollar5.94
Released2021

Specifications

BrandNovexa
ModelNovexa HD-3688 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-3673 Edge 2TB 5,400 RPM CMR Surveillance Hard Drive820$59Compare
Altrix HD-6996 Ti 12TB 7,200 RPM CMR Surveillance Hard Drive2,115$309Compare
Strivon HD-1115 Core 20TB 7,200 RPM CMR NAS Hard Drive2,570$499Compare
Novexa HD-1163 Ultra 20TB 7,200 RPM CMR NAS Hard Drive2,229$359Compare
Altrix HD-8594 Ti 2TB 5,400 RPM SMR Desktop Hard Drive769$59Compare
Mirenta HD-7589 Max 16TB 7,200 RPM CMR Enterprise Hard Drive2,303$299Compare

All Hard Drives · JSON

Cite this page: Hardware Spec Index, “Novexa HD-3688 Ultra 20TB 7,200 RPM CMR NAS Hard Drive”, https://vextor7.com/item/23776 (accessed 2026-10-19).