Hardware Spec Index

Mirenta HD-7478 SE 20TB 7,200 RPM CMR Enterprise Hard Drive

Hard Drives · Mirenta · SKU HD7478-SE · Released 2020 · Updated 2026-10-21

Key facts

Benchmark index2,972 (Hard Drives scale)
Category rank#3,803
Street price$539
Power8 W
Performance per dollar5.51
Released2020

Specifications

BrandMirenta
ModelMirenta HD-7478 SE
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

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Cite this page: Hardware Spec Index, “Mirenta HD-7478 SE 20TB 7,200 RPM CMR Enterprise Hard Drive”, https://vextor7.com/item/2415147 (accessed 2026-10-21).