Hardware Spec Index

Mirenta HD-4921 Ultra 2TB 5,400 RPM CMR Surveillance Hard Drive

Hard Drives · Mirenta · SKU HD4921-ULTRA · Released 2021 · Updated 2026-10-22

Key facts

Benchmark index979 (Hard Drives scale)
Category rank#43,512
Street price$69
Power4 W
Performance per dollar14.19
Released2021

Specifications

BrandMirenta
ModelMirenta HD-4921 Ultra
Capacity2 TB
ClassSurveillance
RecordingCMR (conventional magnetic recording)
Spindle speed5,400 RPM
Cache256 MB
InterfaceSATA 6 Gb/s
Sustained transfer170 MB/s
Workload rating180 TB/year
MTBF1 million hours
Helium-filledNo
Warranty2 years

Related guides

CMR vs SMR Hard DrivesNAS RAID Levels Explained

Similar Hard Drives

ModelBenchmarkPriceCompare
Strivon HD-6279 Edge 4TB 5,400 RPM CMR Surveillance Hard Drive695$49Compare
Strivon HD-6915 Max 20TB 7,200 RPM CMR NAS Hard Drive2,490$409Compare
Novexa HD-6452 Edge 12TB 7,200 RPM CMR NAS Hard Drive2,052$269Compare
Altrix HD-9582 Pro 16TB 7,200 RPM CMR NAS Hard Drive2,448$329Compare
Novexa HD-7642 Pro 6TB 5,400 RPM CMR Desktop Hard Drive1,899$219Compare
Strivon HD-1683 Plus 6TB 5,400 RPM SMR Desktop Hard Drive1,563$149Compare

All Hard Drives · JSON

Cite this page: Hardware Spec Index, “Mirenta HD-4921 Ultra 2TB 5,400 RPM CMR Surveillance Hard Drive”, https://vextor7.com/item/93488196 (accessed 2026-10-22).