Hardware Spec Index

Altrix HD-4991 XT 12TB 7,200 RPM CMR Surveillance Hard Drive

Hard Drives · Altrix · SKU HD4991-XT · Released 2024 · Updated 2026-10-26

Key facts

Benchmark index1,819 (Hard Drives scale)
Category rank#35,722
Street price$229
Power7 W
Performance per dollar7.94
Released2024

Specifications

BrandAltrix
ModelAltrix HD-4991 XT
Capacity12 TB
ClassSurveillance
RecordingCMR (conventional magnetic recording)
Spindle speed7,200 RPM
Cache512 MB
InterfaceSATA 6 Gb/s
Sustained transfer240 MB/s
Workload rating180 TB/year
MTBF1 million hours
Helium-filledYes
Warranty2 years

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Cite this page: Hardware Spec Index, “Altrix HD-4991 XT 12TB 7,200 RPM CMR Surveillance Hard Drive”, https://vextor7.com/item/41918846 (accessed 2026-10-26).