Hardware Spec Index

Mirenta HD-8991 Ultra 6TB 5,400 RPM SMR Desktop Hard Drive

Hard Drives · Mirenta · SKU HD8991-ULTRA · Released 2025 · Updated 2026-10-21

Key facts

Benchmark index1,092 (Hard Drives scale)
Category rank#22
Street price$99
Power5 W
Performance per dollar11.03
Released2025

Specifications

BrandMirenta
ModelMirenta HD-8991 Ultra
Capacity6 TB
ClassDesktop
RecordingSMR (shingled magnetic recording)
Spindle speed5,400 RPM
Cache256 MB
InterfaceSATA 6 Gb/s
Sustained transfer190 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-8991 Ultra 6TB 5,400 RPM SMR Desktop Hard Drive”, https://vextor7.com/item/6448908 (accessed 2026-10-21).