Hardware Spec Index

Mirenta HD-6921 Pro 4TB 5,400 RPM SMR Desktop Hard Drive

Hard Drives · Mirenta · SKU HD6921-PRO · Released 2020 · Updated 2026-10-25

Key facts

Benchmark index1,056 (Hard Drives scale)
Category rank#32,771
Street price$79
Power5 W
Performance per dollar13.37
Released2020

Specifications

BrandMirenta
ModelMirenta HD-6921 Pro
Capacity4 TB
ClassDesktop
RecordingSMR (shingled magnetic recording)
Spindle speed5,400 RPM
Cache256 MB
InterfaceSATA 6 Gb/s
Sustained transfer180 MB/s
Workload rating180 TB/year
MTBF1 million hours
Helium-filledNo
Warranty2 years

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Cite this page: Hardware Spec Index, “Mirenta HD-6921 Pro 4TB 5,400 RPM SMR Desktop Hard Drive”, https://vextor7.com/item/94817615 (accessed 2026-10-25).