Hardware Spec Index

Mirenta HD-9421 Pro 20TB 7,200 RPM CMR Enterprise Hard Drive

Hard Drives · Mirenta · SKU HD9421-PRO · Released 2025 · Updated 2026-10-23

Key facts

Benchmark index2,303 (Hard Drives scale)
Category rank#27,229
Street price$349
Power8 W
Performance per dollar6.60
Released2025

Specifications

BrandMirenta
ModelMirenta HD-9421 Pro
Capacity20 TB
ClassEnterprise
RecordingCMR (conventional magnetic recording)
Spindle speed7,200 RPM
Cache512 MB
InterfaceSATA 6 Gb/s
Sustained transfer280 MB/s
Workload rating550 TB/year
MTBF2.5 million hours
Helium-filledYes
Warranty5 years

Related guides

CMR vs SMR Hard DrivesNAS RAID Levels Explained

Similar Hard Drives

ModelBenchmarkPriceCompare
Strivon HD-5660 Edge 6TB 5,400 RPM CMR Surveillance Hard Drive1,239$109Compare
Strivon HD-2591 Pro 16TB 7,200 RPM CMR Enterprise Hard Drive2,306$369Compare
Strivon HD-4242 Max 6TB 5,400 RPM SMR Desktop Hard Drive1,166$89Compare
Novexa HD-8209 SE 12TB 7,200 RPM CMR NAS Hard Drive2,114$299Compare
Strivon HD-4587 Prime 24TB 7,200 RPM CMR NAS Hard Drive2,375$399Compare
Altrix HD-6591 SE 16TB 7,200 RPM CMR NAS Hard Drive2,368$369Compare

All Hard Drives · JSON

Cite this page: Hardware Spec Index, “Mirenta HD-9421 Pro 20TB 7,200 RPM CMR Enterprise Hard Drive”, https://vextor7.com/item/8977822 (accessed 2026-10-23).