Guides
Short, practical write-ups on the infrastructure topics behind CalcLoop's calculators — no fluff, no padding.
How to Calculate RAID 6 Usable Capacity
The formula, a worked example, and why RAID 6 is the safer default for large modern drives.
What Is RAID? A Practical Introduction
Hardware vs. software RAID, whether drives need to be identical, and why RAID isn't a backup.
RAID Levels Reference: 0, 1, 5, 6, 10, 50, 60
A full comparison table plus a plain-language explanation of every commonly-used RAID level.
What 99.9% Uptime Actually Means
Turning SLA percentages into real downtime, and what to actually check in a vendor contract.
Why You Should Lower DNS TTL Before a Migration
The two-step process that makes a DNS cutover fast and boring instead of a multi-day headache.
The 3-2-1 Backup Rule, Explained Properly
What the rule actually requires, where it falls short against ransomware, and the 3-2-1-1 extension.