Hardware Spec Index

Mirenta HD-9421 Max 20TB 7,200 RPM CMR NAS Hard Drive

Hard Drives · Mirenta · SKU HD9421-MAX · Released 2022 · Updated 2026-10-25

Key facts

Benchmark index2,158 (Hard Drives scale)
Category rank#14,220
Street price$359
Power8 W
Performance per dollar6.01
Released2022

Specifications

BrandMirenta
ModelMirenta HD-9421 Max
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
Strivon HD-3691 Core 16TB 7,200 RPM CMR Enterprise Hard Drive2,477$369Compare
Novexa HD-4795 Plus 12TB 7,200 RPM CMR Surveillance Hard Drive2,251$319Compare
Altrix HD-3822 XT 24TB 7,200 RPM CMR NAS Hard Drive2,920$449Compare
Novexa HD-2047 Ultra 24TB 7,200 RPM CMR Enterprise Hard Drive2,775$579Compare
Mirenta HD-7361 SE 4TB 5,400 RPM SMR Desktop Hard Drive1,338$119Compare
Strivon HD-7662 Ti 2TB 5,400 RPM CMR Surveillance Hard Drive661$49Compare

All Hard Drives · JSON

Cite this page: Hardware Spec Index, “Mirenta HD-9421 Max 20TB 7,200 RPM CMR NAS Hard Drive”, https://vextor7.com/item/8203539 (accessed 2026-10-25).