Footnote: storage_raid_overhead_pct
Category: storage · Applies to: on_prem_only
Description
RAID overhead for on-prem NVR storage (RAID 5 typical).
Value
0.25 fraction of raw storage
Source
https://www.ipsecuritydepot.com/guides/calculators/video-retention-storage/
Source type: industry_benchmark
Last verified: 2026-07-15
Confidence: high
Notes
RAID 5 reserves ~25% for parity. RAID 6 reserves ~50%. Mirrored RAID 10 doubles raw need. Calculator uses RAID 5 default; user can override.
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