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#Backup & DR

Reviewed Ops Log notes tagged Backup & DR, written by Michal Jatczak with source links, test context and operational checks.

1 reviewed note

Decision MemoSecurity & Infrastructure

Backup after 3-2-1: immutability modes, drill cadence, and the evidence an auditor accepts

3-2-1 describes the shape of a backup estate but says nothing about its blast radius. This memo settles four decisions: compliance-mode retention over governance mode, two retention tiers sized separately, a second party on destructive operations, and a drill that leaves a dated artefact behind.

By Michal Jatczak

Adjacent tags

#Microsoft 365#Security#Compliance#Audit#Cost Optimization#IAM#Offboarding#EU#Hardening#SMB
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Michal's field notes on Microsoft 365, Azure and AI operations for regulated European teams.

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