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Guides

Technical guides

Written from the work itself — for people who have to make a decision, not for people who need marketing.

Each guide is built as a sequence of steps and cites primary sources — vendor documentation, NIST and NCSC — so every key fact can be checked independently.

  • Exchange → Microsoft 365

    An 8-part guide 8 primary sources

    Migrating from on-premise Exchange to Microsoft 365

    The migration methods, what breaks at the joins, and what to check before moving a single mailbox — with references to Microsoft documentation.

    What is in the guide

    1. What is forcing the decision now
    2. Inventory before you choose a method
    3. Choosing the migration method
    4. Licensing: match the plan to the workload
    5. The other half: file servers
    6. What actually breaks: DNS, relay, and limits
    7. Harden the tenant before the first mailbox moves
    8. Cutover, rollback, and the last on-premise server
    • Microsoft 365
    • Exchange
    • SharePoint
    • Entra ID

    Published

  • Backup and DR

    An 8-part guide 8 primary sources

    Backup and DR that restores: RPO, RTO and restore testing

    How to define RPO and RTO, why the 3-2-1 rule still holds, and what a real restore test looks like — sourced from NIST and vendor documentation.

    What is in the guide

    1. The two numbers come before the product
    2. Tier your workloads — one RPO cannot fit everything
    3. Choosing backup targets: 3-2-1 and what has been added since
    4. Protect the backup itself: immutability and identity separation
    5. Where backup systems fail silently
    6. What a real restore test looks like
    7. Virtualized workloads have their own rules
    8. DR is a runbook and people, not a product
    • Veeam
    • Cove Backup
    • Proxmox Backup Server
    • NIST SP 800-34

    Published

  • VMware → Proxmox

    An 8-step checklist 5 primary sources

    Checklist: VMware renewal or Proxmox migration

    What to check before deciding — licensing, workloads, backup, DR and a rollback plan — written from migrations actually delivered.

    What is in the guide

    1. Understand what actually changed at renewal
    2. Inventory and assess the current environment
    3. Decide the target architecture
    4. Plan licensing and cost
    5. Re-architect backup and disaster recovery
    6. Pilot on non-critical workloads
    7. Cut over in staged waves
    8. Validate, document, and hand over to operations
    • VMware
    • Proxmox
    • Broadcom
    • Backup & DR

    Published

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