Backup Window & Bandwidth Calculator

P117

Estimate sustained backup bandwidth from dataset size, daily change rate, reduction ratio, backup window, and protocol efficiency.

Parameters

Dataset Size TB Daily Change Rate % Compression/Dedupe Ratio Backup Window h End-to-End Efficiency %

CalculateReset

Assumptions

• TB 按十進制容量計算。
• 壓縮去重比代表源數據量除以實際傳輸量。

Important notes

• 首次全備、合成全備、快照、數據庫日志和并發恢復任務應分別建模。

Standards and sources

• NIST SP 800-34 Rev. 1 Contingency Planning Guide

Verified: 2026-09-05