Hardware Spec Index

Altrix HD-8921 Ti 4TB 5,400 RPM CMR Surveillance Hard Drive

Hard Drives · Altrix · SKU HD8921-TI · Released 2023 · Updated 2026-10-24

Key facts

Benchmark index1,091 (Hard Drives scale)
Category rank#21,878
Street price$89
Power5 W
Performance per dollar12.26
Released2023

Specifications

BrandAltrix
ModelAltrix HD-8921 Ti
Capacity4 TB
ClassSurveillance
RecordingCMR (conventional 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

Related guides

CMR vs SMR Hard DrivesNAS RAID Levels Explained

Similar Hard Drives

ModelBenchmarkPriceCompare
Mirenta HD-3794 Prime 6TB 5,400 RPM CMR Desktop Hard Drive927$59Compare
Altrix HD-9169 Prime 24TB 7,200 RPM CMR NAS Hard Drive2,475$379Compare
Strivon HD-3500 Prime 8TB 7,200 RPM CMR NAS Hard Drive1,379$129Compare
Altrix HD-1202 Plus 16TB 7,200 RPM CMR Enterprise Hard Drive2,003$249Compare
Altrix HD-8212 Max 4TB 5,400 RPM SMR Desktop Hard Drive1,113$89Compare
Novexa HD-2760 Core 8TB 7,200 RPM SMR Desktop Hard Drive1,741$189Compare

All Hard Drives · JSON

Cite this page: Hardware Spec Index, “Altrix HD-8921 Ti 4TB 5,400 RPM CMR Surveillance Hard Drive”, https://vextor7.com/item/73671909 (accessed 2026-10-24).