Hardware Spec Index

Mirenta HD-9921 Plus 4TB 5,400 RPM SMR Desktop Hard Drive

Hard Drives · Mirenta · SKU HD9921-PLUS · Released 2022 · Updated 2026-10-22

Key facts

Benchmark index746 (Hard Drives scale)
Category rank#12,876
Street price$59
Power5 W
Performance per dollar12.64
Released2022

Specifications

BrandMirenta
ModelMirenta HD-9921 Plus
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-9921 Plus 4TB 5,400 RPM SMR Desktop Hard Drive”, https://vextor7.com/item/5597404 (accessed 2026-10-22).