Formula: Storage (TB) = Bitrate (Mbps) × 10.8 × Retention Days × Cameras ÷ 1,000,000, then multiplied by the RAID overhead factor. Constant blocks convert Mbps continuous recording to GB/day (3600 × 24 ÷ 8 ÷ 1000).
Typical Retention by Region/Sector
| Context | Typical Retention |
|---|---|
| Commercial (India) | 30 days |
| UAE (SIRA) | 90 days |
| KSA (HCIS) | 30–365 days |
| Banking / Data Centres | 90+ days |