Quick Reference
3-2-1 Backup Rule Explained for Real Homes
07/15/2026
Keep three copies of important data on two media types, with one offsite; protect recovery credentials and test restores because copy counts alone do not establish recoverability.
2.4 vs 5 vs 6 GHz Wi-Fi: Which Band to Use
07/15/2026
Choose a Wi-Fi band by client support, coverage, congestion, and backhaul: 2.4 GHz for compatible low-bandwidth devices, 5 GHz for everyday use, and nearby 6 GHz where supported.