Does a Stage-0 readiness baseline replace Device42?

No. Stage-0 is a vendor-neutral CSV baseline that delivers per-VM readiness with reasons and executive rollups. Device42 provides discovery/CMDB and application/service dependency mapping to support grouping and wave planning.

What carries forward from Stage-0 into Device42 work?

Deduped inventory, any-tag prod/critical/compliance normalization, backup posture flags, uptime class, and cohort shortlists—plus thresholds and rules—focus Device42 discovery and service maps on the right systems.

Why start with Stage-0 instead of going straight to discovery?

Stage-0 provides quick, vendor-neutral triage without access changes, so discovery and dependency mapping can be scoped to the systems that matter, saving time and reducing noise.

VMware Migration Readiness (Google Sheets Tool) vs Device42

Stage-0 baseline (vCenter + backup CSVs, local) and Device42 discovery/CMDB: how they fit together.

TL;DR

Purpose: Stage-0 = fast, local readiness baseline; Device42 = discovery + CMDB with application/service dependency mapping and inventory intelligence.
Inputs: Stage-0 uses vCenter + backup CSVs; Device42 ingests via auto-discovery, APIs, and connectors across servers, VMs, networks, and apps.
Outputs: Stage-0 delivers per-VM readiness with reasons + exec rollups; Device42 delivers service maps, CMDB relationships, asset/inventory views, and data to support wave planning.

Looking for the page where you can download the VMware Migration Readiness (Google Sheets Tool) — Stage-0 readiness baseline? Click here.

What each does

Stage-0 Readiness Baseline (this tool)

Inputs: vCenter inventory CSV + backup job inventory CSV.
Runs locally: Google Sheets (and Excel) — no agents, no SaaS ingest.
Normalization: deduped VM names, OS family, any-tag production/critical/compliance, uptime class.
Backup posture: missing/stale, short retention, irregular frequency, no offsite.
Output: Per-VM readiness with reasons (only causes that apply) and exec-ready rollups by Cluster / OS family / Uptime / Backup posture.
Why first: quickly separates move-sooner vs stabilize/leave-for-now cohorts before heavier discovery and mapping.

Device42 (brand)

Goal: build a trusted inventory & CMDB with application/service dependency views to support operations and migrations.
How: auto-discovery across on-prem and cloud (OS/hypervisor, network, APIs), relationship mapping, and integrations; centralizes into a CMDB.
Output: Service/application maps, asset & configuration data, relationships and dependencies, and supporting views for migration and change planning.

When to use each

Use Stage-0 when you need a triage baseline in hours with no connectors, to brief stakeholders and scope what truly needs deeper work.
Use Device42 to discover dependencies, enrich the CMDB, and support grouping, change control, and wave planning with live relationships.

How they work together (handoff 1-2-3)

Stage-0 shortlist: Identify cohorts (by cluster/OS/role) with readiness + reasons, backup posture, and uptime class.
Targeted discovery & mapping: In Device42, focus discovery and service maps on the shortlisted cohorts to confirm dependencies and form move sets.
Planning: Combine Device42 relationships with Stage-0 flags to shape stabilization tasks, pre-migration fixes, and wave sequencing.

What carries forward from Stage-0 (not throwaway)

Deduped VM inventory with normalized names & OS family.
Any-tag normalization for production / critical (DB/AD/DNS) / compliance.
Backup posture flags (missing/stale/retention/offsite) informing RPO/RTO readiness.
Uptime class to highlight change-averse systems.
Cohort shortlist to constrain Device42 discovery scope.
Assumptions register and readiness rules table for governance/audit.
Optional CSV bundle (inventory + flags + cohorts) to align teams without re-keying.

Can we continue guiding beyond Stage-0?

Yes. If deeper assessment is warranted, we’ll help scope the right next step, ensure Stage-0 artifacts are reused alongside Device42 outputs, and keep assumptions consistent across discovery, mapping, and planning. Vendor-neutral.

What this page is not

A product review or endorsement. This page explains how a Stage-0 readiness baseline complements a discovery/CMDB platform like Device42.

Micro-FAQ

No. Stage-0 provides a readiness baseline from CSVs. Device42 provides discovery/CMDB and dependency mapping that support grouping and wave planning.
Deduped inventory, tag normalization, backup flags, uptime class, and cohort selection—plus thresholds/rules—focus discovery and mapping on the right systems.
Lower friction and faster signal; you limit scope to high-value cohorts and take cleaner inputs into discovery, reducing time and noise.

Legal & attribution

This page describes how a Stage-0 readiness baseline complements Device42 discovery/CMDB. Device42 is a trademark of Device42, Inc. We are not affiliated with, endorsed, or sponsored by Device42, Inc. Descriptions of Device42 capabilities are based on publicly available information and typical deployments as of September 2025 and may change.

Nothing here is legal, financial, or professional advice. Use of Device42 is governed by Device42, Inc.’s terms and policies. Our tool runs locally in your Google Drive; any use of Device42 involves Device42’s own data handling.

If you represent Device42, Inc. and believe this page contains an inaccuracy or improper use of your marks, please contact questions@speediyo.com and we’ll review promptly.

Last reviewed: September 8, 2025.