Discovery Client won't start after Windows reboot - "connection refused" error?

**Solution**: The discovery client service has a startup dependency that fails. Run these commands in PowerShell as administrator: ```powershell Stop-Service "Migration Center Discovery Client" Set-Service "Migration Center Discovery Client" -StartupType "Automatic (Delayed Start)" Start-Service "Migration Center Discovery Client" ``` The delayed start gives Windows time to initialize network dependencies. This is a [known issue with version 6.2.0](https://cloud.google.com/migration-center/docs/release-notes) that Google still hasn't bothered fixing. I've seen this kill entire Discovery Client deployments during Windows patching cycles - particularly painful when you've got 50+ discovery clients across multiple data centers all failing simultaneously.

Authentication keeps failing with "roles/migrationcenter.discoveryClient" error?

**Root cause**: Your organization has disabled service account key creation at the org policy level. **Fix**: 1. Ask your Org Policy Administrator to check **IAM > Organization Policies** 2. Find policy "Disable service account key creation" 3. Set enforcement to **Off** for your project 4. Alternative: Have admin create the service account manually and provide you the key file

Discovery stops working after scanning exactly 2,000 servers?

**The 2,000 server limit? That's not a recommendation, that's where everything dies**. Discovery client becomes unstable beyond 2,000 servers in version 6.2.0. Solutions: - **Immediate**: Deploy multiple discovery clients, each scanning <2,000 servers - **Proper fix**: Upgrade to discovery client 6.3.7+ which removes this limitation - **Workaround**: Use IP range exclusions to stay under the limit

VMware guest collection fails with timeout on Windows VMs?

**Common cause**: Windows Management Instrumentation (WMI) query failures with Win32_Service. **Solution steps**: 1. On target Windows VMs, run: `services.msc` 2. Verify "Windows Management Instrumentation" service is running 3. Run WMI repair: `winmgmt /verifyrepository` 4. If corrupt: `winmgmt /resetrepository` 5. Restart WMI service This [issue was fixed in version 6.3.6](https://cloud.google.com/migration-center/docs/release-notes), but older clients still have problems.

Cost estimates are 40-60% lower than actual bills?

**Yeah, this is normal Migration Center being Migration Center**. Their cost estimates are consistently optimistic, like a used car salesman promising this Honda has "never seen rain". Plan for 60% higher costs unless you enjoy budget meetings where you explain why your 'simple migration' costs twice what you promised: - **Base estimate**: Migration Center number (cute, but wrong) - **Network reality**: Add 60% for egress costs they never mention - **Learning curve tax**: Add $50K+ for training/consulting (minimum) - **Initial over-provisioning**: Add 25% because nobody optimizes on day one - **Murphy's Law**: Add 20% for the shit that always breaks **Real example**: $47K estimate → $140K actual first AWS bill → 6 months of explaining to management.

IP range scan stays "In Progress" forever?

**Cause**: Discovery client service was restarted during an active scan, leaving it in a stuck state. **Fix**: 1. Stop the discovery client service 2. Delete scan database: `C:\ProgramData\Google\mcdc\data\scans.db` 3. Restart discovery client service 4. Recreate the IP range scan **Prevention**: Never restart the service during active scans.

Linux guest collection reports wrong disk space?

**They've been slowly fixing this mess over several releases**: - **ZFS filesystems**: Fixed in version 6.3.6 - **Mount points with spaces**: Fixed in version 6.3.6 - **Network mounts included**: Fixed in version 6.3.4 - **Logical volume miscalculation**: Fixed in version 6.3.4 **Solution**: Upgrade to discovery client 6.3.7+ for accurate disk reporting.

Discovery finds most servers but misses critical applications?

**Expected behavior**. Automated discovery has blind spots: **Always missed**: - Custom applications on non-standard ports - Services behind complex load balancers - Applications that only run during specific time windows - Anything communicating through custom protocols **Solution**: Use hybrid approach: 1. Let automated discovery find 80% of infrastructure 2. Manually document the 20% of critical custom applications 3. Import additional data via CSV upload for complete inventory

Our enterprise has 15,000+ servers across multiple data centers. How do we approach discovery at this scale?

**Don't try to scan everything from one discovery client. Seriously. I've seen this kill entire Discovery Client deployments**. Deploy multiple discovery clients with clear boundaries: - **Regional deployment**: One discovery client per major data center/region - **Credential boundaries**: Separate clients for different AD domains or AWS accounts - **Performance tiers**: Dedicated clients for production vs. development environments **What actually works for 15K+ servers**: ``` Data Center 1 (5,000 servers): 3 discovery clients (1,667 servers each - any more and performance dies) Data Center 2 (4,000 servers): 2 discovery clients (learned this after the first one choked) AWS Environment (3,000 instances): 2 discovery clients by VPC (API rate limits are real) Azure Environment (2,000 VMs): 1 discovery client (and pray Azure doesn't have an outage) Legacy DMZ (1,000 servers): 1 discovery client (with lots of manual coordination and crying) ``` All discovery clients upload to the same Migration Center project, giving you unified reporting with distributed collection.

Migration Center shows dependency connections that don't make sense. How do we get accurate dependency mapping?

**Network discovery has fundamental limitations**. It sees network connections, not business logic dependencies. Common issues: **Load balancer confusion**: Connections through F5 or NetScaler show as dependencies on the load balancer, not the actual backend servers. **Proxy server masking**: Applications using corporate proxy servers show dependencies on proxy servers instead of actual endpoints. **Database connection pooling**: Middleware tools mask the actual database connection patterns. **Better dependency mapping approach**: 1. Use Migration Center network data as a starting point (finds 60-70% of connections) 2. Interview application teams to fill gaps 3. Review architecture documentation and CMDBs 4. Monitor during different time periods (capture monthly batch jobs) 5. Use [application modernization assessment](https://cloud.google.com/migration-center/docs/app-modernization-assessment) for code-level analysis

vCenter inventory collection is extremely slow and sometimes fails. How do we optimize VMware discovery?

**vCenter API has rate limits and resource constraints** that aren't well documented. Large environments with 1,000+ VMs can overwhelm vCenter. **Optimization strategies**: - **Schedule during off-peak hours**: Avoid vCenter collection during backup windows or peak usage - **Reduce concurrent operations**: Limit guest-level scanning to 10-15 VMs simultaneously - **Stagger multiple vCenters**: Don't scan all vCenter servers at the same time - **Use RVTools for initial inventory**: [Import RVTools data](https://cloud.google.com/migration-center/docs/import-data-rvtools) for baseline, then use discovery client for guest-level details **vCenter performance monitoring**: - Monitor vCenter CPU and memory during discovery operations - Check vCenter database performance (SQL Server or PostgreSQL) - Review vSphere events for API timeout errors - Consider upgrading vCenter if running older versions (6.5 or earlier)

Discovery client database keeps getting corrupted. Is this normal?

**Database corruption is not normal** - it means something is fundamentally fucked with your setup. We tried ignoring it for months until we lost 3 weeks of scan data. Don't be us. SQLite corruption throws specific error codes like "database is locked" (SQLITE_BUSY) or "database disk image is malformed" (SQLITE_CORRUPT). When you see these, don't restart the service hoping it fixes itself. **Storage issues**: - Discovery client on slow network storage (NAS/SAN with high latency) - Insufficient disk space causing SQLite write failures - Storage array issues during database operations **System stability issues**: - Frequent Windows reboots during discovery operations - Memory pressure causing application crashes - Antivirus software interfering with database files **Prevention strategies**: - **Move to local SSD storage**: Avoid network-attached storage for discovery client - **Increase VM resources**: 8GB RAM minimum, 16GB for large environments - **Exclude from antivirus**: Add `C:\ProgramData\Google\mcdc\` to antivirus exclusions - **Regular database maintenance**: Export data and restart discovery client weekly **Recovery when corruption occurs**: ```powershell # Stop service and backup corrupted database Stop-Service "Migration Center Discovery Client" Copy-Item "C:\ProgramData\Google\mcdc\data\*" "C:\backup\" # Use built-in recovery (discovery client 6.3+) & "C:\Program Files\Google\Migration Center Discovery Client\mcdc.exe" recover-db # If recovery fails, delete and restart Remove-Item "C:\ProgramData\Google\mcdc\data\*" -Force Start-Service "Migration Center Discovery Client" ```

Our security team won't allow discovery client to communicate with Google Cloud. Can we use Migration Center in air-gapped environments?

**Yes, with the offline export feature** introduced in [version 6.3.7](https://cloud.google.com/migration-center/docs/discovery-client-offline-export) on August 6, 2025. This enables discovery in completely disconnected environments. Took Google long enough - only 3 years of enterprise customers begging for this basic feature. **Air-gapped deployment process**: 1. **Install discovery client in disconnected mode**: No internet connectivity required for scanning 2. **Perform complete inventory and guest discovery**: Collect all data locally 3. **Export data bundle**: Generate encrypted data package containing all discovery results 4. **Transfer via approved method**: USB, secure file transfer, or approved network bridge 5. **Import to Migration Center**: Upload data bundle to connected Google Cloud project **Security considerations**: - Data is encrypted during export and transfer - No Google Cloud credentials stored on air-gapped systems - Complete audit trail of what data was collected - Can be integrated with enterprise data loss prevention tools **Limitations of offline mode**: - No real-time data upload or monitoring - Manual process for data transfer - Cannot use continuous performance monitoring features

Cost estimates are so far off they're useless. How do we get realistic migration budgets?

**Migration Center's cost estimates are about as accurate as a weatherman in a hurricane**. They assume perfect execution in a world that doesn't exist. I've never seen a Migration Center estimate that was within 40% of reality. **Step 1: Start with Migration Center estimate** Example: $50,000/month **Step 2: Apply reality multipliers** - **Network costs**: Add 60% ($80,000/month) - **Learning curve tax**: Add 30% ($104,000/month) - **Initial over-provisioning**: Add 25% ($130,000/month) - **Migration tools and services**: Add $20,000/month ($150,000/month) **Step 3: Include hidden costs** - **Training and certification**: $50,000 one-time - **Consulting and professional services**: $100,000-500,000 - **Extended parallel run period**: 3-6 months of dual costs - **Rollback insurance**: Reserve 20% of total budget for potential rollback **Real-world example from my last gig**: - Migration Center estimate: $47,000/month (so cute) - Actual first AWS bill: $89,000/month (panic meeting time) - Peak costs during learning curve: $140,000/month (CTO not happy) - Optimized costs after 18 months of tuning: $85,000/month (still 80% higher than estimate) **Better cost modeling approach**: 1. Export [detailed pricing CSV](https://cloud.google.com/migration-center/docs/generate-tco-report) from Migration Center 2. Have enterprise architects review sizing assumptions 3. Get Microsoft licensing team to validate license calculations 4. Include 6-month parallel run period in budget 5. Plan for 18-month optimization timeline to reach target costs

We have compliance requirements (SOC 2, HIPAA, PCI). Can Migration Center meet these requirements?

**Migration Center can support compliance environments** with proper configuration, but requires additional controls beyond default setup. **SOC 2 Type II compliance considerations**: - **Data encryption**: All data encrypted in transit and at rest by default - **Access controls**: Use Google Cloud IAM with principle of least privilege - **Audit logging**: Enable [Cloud Audit Logs](https://cloud.google.com/migration-center/docs/audit-logging) for all Migration Center activities - **Data retention**: Configure automatic data deletion after migration completion **HIPAA compliance factors**: - **Business Associate Agreement**: Required with Google Cloud - **Data minimization**: Configure discovery to exclude PHI from collection - **Geographic restrictions**: Use [VPC Service Controls](https://cloud.google.com/migration-center/docs/service-perimeter) to restrict data location - **Access logging**: Monitor all access to discovery data **PCI DSS considerations**: - **Network segmentation**: Deploy discovery clients outside of cardholder data environment - **Credential management**: Use enterprise PAM tools for discovery credentials - **Data classification**: Tag servers in CDE separately from other infrastructure - **Regular security testing**: Include discovery infrastructure in penetration testing scope **Implementation recommendations**: - Deploy discovery clients in management network segments, not production - Use service perimeters to control data egress - Integrate with enterprise SIEM for centralized logging - Document data flows for compliance auditors

Network dependency mapping shows thousands of connections. How do we make sense of this data?

**Raw network data is overwhelming without proper filtering and analysis**. The [network dependencies report](https://cloud.google.com/migration-center/docs/network-dependencies-report) needs post-processing to be useful for migration planning. **Data filtering strategies**: 1. **Ignore administrative connections**: RDP, SSH, SNMP monitoring traffic 2. **Focus on application ports**: HTTP/HTTPS (80, 443), database ports (1433, 3306, 5432) 3. **Filter by traffic volume**: Connections with <10MB/day are often monitoring or maintenance 4. **Time-based analysis**: Look for connections that only occur during batch processing windows **Dependency analysis workflow**: ``` Raw dependency data (10,000+ connections) ↓ Filter administrative traffic Relevant application connections (2,000 connections) ↓ Group by application function Business-critical dependencies (500 connections) ↓ Validate with application teams Migration-blocking dependencies (100 connections) ``` **Making dependencies actionable**: - **Create dependency groups**: Cluster related servers that must migrate together - **Identify external dependencies**: Services that cannot be migrated and require hybrid connectivity - **Plan migration waves**: Use dependency data to sequence migration order - **Design network connectivity**: Plan VPN, Interconnect, and firewall rules based on actual traffic patterns **Tool integration recommendations**: - Export dependency data to network diagramming tools (Visio, Lucidchart) - Import into project management tools for migration wave planning - Integrate with CMDB to add business context to technical dependencies - Use application performance monitoring data to validate dependency importance

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Google Cloud Migration Center: AI-Optimized Troubleshooting Guide

Configuration Requirements

Discovery Client Service Configuration

Critical Settings for Production:

Startup Type: "Automatic (Delayed Start)" - prevents startup dependency failures
Service Account: Requires roles/migrationcenter.discoveryClient permissions
Network Access: TCP 443 (Google Cloud APIs), TCP 22 (SSH), TCP 135/445 (WMI)

Database Storage Requirements:

Local SSD storage mandatory (network storage causes SQLite corruption)
Minimum 8GB RAM, 16GB for environments >5,000 servers
Storage: 2-5MB per discovered server for historical data
Database location: C:\ProgramData\Google\mcdc\data\

Environment Scaling Limits

Critical Breaking Points:

2,000 servers per discovery client (hard limit in version 6.2.0)
Beyond 2,000: discovery client becomes unstable, causes timeouts
Solution: Deploy multiple discovery clients with <2,000 servers each
Version 6.3.7+ removes this limitation

Resource Requirements

Time Investment Reality

Implementation Timeline:

Simple environment (500 servers): 2-4 weeks setup + 6 months optimization
Enterprise environment (5,000+ servers): 2-3 months setup + 18 months optimization
Complex multi-datacenter: 6+ months initial deployment

Human Resource Requirements:

Dedicated migration engineer: Full-time for duration
VMware administrator: 25% time for vCenter integration
Network team: 10% time for firewall/connectivity setup
Security team: Initial credential setup + monthly rotation

Cost Reality vs Estimates

Migration Center Cost Accuracy:

Estimates consistently 40-60% below actual costs
Network costs underestimated by 60% (egress traffic patterns)
Learning curve tax: Additional 30% for first 18 months
Migration tools/consulting: $50K-500K not included in estimates

Real Budget Formula:

Migration Center estimate × 1.6 (network reality) × 1.4 (over-provisioning) + $25K/month (tools) × 1.3 (operational overhead) = Actual first-year costs

Critical Warnings

Database Corruption Indicators

SQLite Error Patterns:

"Database is locked" (SQLITE_BUSY error code 5)
"Database disk image is malformed" (SQLITE_CORRUPT)
Cause: Storage I/O latency >200ms triggers corruption
Recovery: Stop service, use mcdc.exe recover-db command

Authentication Failure Root Causes

90% of failures caused by:

Domain password rotation without discovery client update
Time skew >5 minutes between domain controllers (Kerberos failure)
Service account permission changes by security team
Network timeouts on UDP 88 (Kerberos authentication)

VMware vCenter API Limitations

Performance Breaking Points:

Concurrent API connections throttled by vCenter
Large inventory queries (>1,000 VMs) exhaust vCenter memory
Heavy API usage causes vCenter database locks
Solution: Stagger scanning, limit concurrent VM collections to 10

Implementation Reality

Network Discovery Blind Spots

Automated Discovery Cannot Detect:

Load balancer backend dependencies (shows load balancer only)
Proxy-mediated connections (shows proxy, not endpoints)
SSL/TLS encrypted application protocols
Batch jobs running monthly/quarterly
Database connection pool actual patterns

Enhanced Discovery Approach:

Automated discovery provides 60-70% of connections
Application team interviews fill remaining gaps
Architecture documentation review required
Monitor during different time windows (capture batch jobs)

Version-Specific Issues

Known Working Versions:

Discovery Client 6.3.7+: Removes 2,000 server limit, fixes ZFS issues
Version 6.3.6: Fixes Windows WMI timeout issues, ZFS filesystems
Version 6.3.4: Resolves disk space calculation errors

Avoid These Versions:

Version 6.2.0: 2,000 server limit, Windows startup dependency issues
Earlier versions: Various disk calculation and authentication bugs

Decision Criteria

When to Use Multiple Discovery Clients

Deploy Separate Clients For:

Each major data center (network latency/firewall issues)
Different credential domains (AD forests, AWS accounts)
Performance-sensitive environments (production vs development)
Compliance boundaries (PCI scope separation)

Alternative Tool Evaluation

Migration Center vs Alternatives:

RVTools: Better for initial VMware inventory, manual export required
CloudEndure: More robust for actual migration execution
Carbonite: Better multi-cloud support
Cloudamize: Superior application dependency analysis

Troubleshooting Decision Trees

Emergency Resolution Priority

Service Won't Start After Reboot:

Check service startup type (set to "Automatic Delayed Start")
Verify network connectivity to Google Cloud APIs
Check local firewall blocking TCP 443 outbound

Authentication Continuously Failing:

Test credentials manually from discovery client server
Check domain controller time synchronization (ntpdate)
Verify service account permissions unchanged
Test network connectivity to domain controllers

Database Corruption Recovery:

Stop discovery client service immediately
Backup corrupted database files
Run mcdc.exe recover-db command
If recovery fails, delete database and rescan

Performance Degradation Analysis

Scan Speed Declining Over Time:

Check discovery client server storage I/O latency
Monitor discovery client memory usage (should be <4GB)
Verify vCenter performance during scanning
Review scan scheduling conflicts with backup windows

Migration Wave Dependencies

Critical Path Analysis:

Domain controllers and DNS: Migrate first or maintain hybrid
Database servers: Require extended parallel run periods
Load balancers: Network architecture redesign often required
Legacy applications: Highest risk, plan rollback scenarios

Compliance Configuration

Air-Gapped Environment Support

Offline Export Process (Version 6.3.7+):

Install discovery client without internet connectivity
Perform complete local inventory collection
Export encrypted data bundle
Transfer via approved secure method
Import to connected Google Cloud project

Security Requirements

Enterprise Security Controls:

Deploy discovery clients in management network segments
Use VPC Service Controls for data egress restrictions
Integrate with enterprise SIEM for audit logging
Exclude discovery database from antivirus scanning

Resource Links by Use Case

Emergency Troubleshooting

Discovery Client CLI Troubleshooting: Database corruption recovery
Authentication Troubleshooting: IAM and credential issues
Google Cloud Support Console: Production emergency escalation

Performance Optimization

Discovery Client Performance Guide: Large environment configuration
VMware vSphere API Documentation: vCenter integration limits
VPC Flow Logs: Network troubleshooting

Compliance Implementation

Offline Export Documentation: Air-gapped environments
Cloud Audit Logs: Compliance trail
VPC Service Controls: Data sovereignty

Alternative Tools

RVTools: VMware inventory backup
CloudEndure Migration: Actual migration execution
Cloudamize Assessment: Application dependency analysis

Useful Links for Further Investigation

Essential Troubleshooting Resources and Emergency Contacts

Link	Description
Discovery Client Troubleshooting	Unlike most Google docs, this one has real solutions for authentication failures and service issues.
Discovery Client CLI Troubleshooting	Essential for database corruption (which will happen), CLI failures, and emergency data recovery.
Migration Center Login Issues	When to use for console access problems and IAM permission errors.
File Import Error Resolution	When to use for CSV upload failures and RVTools import problems.
Discovery Client Performance Configuration	Critical for large environment deployments and performance optimization.
Credential Management Best Practices	Essential for enterprise security compliance and multi-domain environments.
Migration Center Release Notes	Read this first for known issues that will save you days of debugging, recent bug fixes, and features that actually work.
Offline Export for Air-Gapped Environments	This guide is required for setting up offline export capabilities in compliance environments and disconnected networks.
Google Cloud Support Console	Use this console for addressing production issues, urgent troubleshooting, and submitting escalation requests to Google Cloud Support.
Migration Center Support Hub	Access the Migration Center Support Hub for general guidance, best practices, and resolving non-urgent issues related to migration.
Google Cloud Professional Services	Engage Google Cloud Professional Services for assistance with complex enterprise migrations, architectural guidance, and implementation support.
Google Cloud Community Forums	These forums are good for peer troubleshooting and getting a reality check when Google Support provides unhelpful or generic responses.
Google Cloud Migration Discussions	This is where people actually talk, sharing real war stories, unofficial workarounds, and honest opinions from the Google Developer Community.
Stack Overflow - Google Cloud Migration	Find solutions for technical coding issues, API problems, and integration questions related to Google Cloud Platform migration on Stack Overflow.
Discovery Client Database Recovery Commands	This resource provides commands to access logs and database recovery utilities for detailed error analysis, root cause investigation, and database corruption recovery.
Migration Center Python API Documentation	Refer to this documentation for troubleshooting API connection issues, upload failures, and general connectivity problems with the Migration Center Python API.
Google Cloud Network Intelligence	Utilize Google Cloud Network Intelligence for diagnosing and resolving network connectivity issues and firewall-related problems within your cloud environment.
Cloud Connectivity Testing	Use Cloud Connectivity Testing to validate network paths and troubleshoot blocked connections, ensuring proper communication between your cloud resources.
VPC Flow Logs	Configure and analyze VPC Flow Logs for understanding network traffic patterns and conducting security investigations within your Virtual Private Cloud.
RVTools VMware Utility	Use this official Dell RVTools VMware Utility for manual VMware inventory collection when the discovery client encounters failures or issues.
VMware vSphere API Documentation	Refer to the VMware vSphere API Documentation for understanding API limitations and effectively troubleshooting vCenter-related issues in your environment.
PowerCLI for VMware Automation	Utilize PowerCLI for VMware Automation to create custom inventory scripts and perform advanced troubleshooting for vCenter environments.
ServiceNow ITOM Discovery Guide	This guide is useful for implementing CMDB integration and ensuring proper asset correlation within your ServiceNow ITOM Discovery setup.
BMC Helix Discovery	Explore BMC Helix Discovery for comprehensive enterprise asset management integration, providing visibility and control over your IT infrastructure.
Microsoft SCCM Integration	Integrate Microsoft SCCM for efficient Windows environment inventory management and reliable software detection across your organization.
Discovery Client Data Export Guide	This critical guide explains how to export Discovery Client data before performing major upgrades or implementing significant changes.
Migration Center Data Export	Perform essential regular exports of Migration Center data for robust disaster recovery planning and business continuity strategies.
Cloud Audit Logs	Cloud Audit Logs are required for maintaining a compliance audit trail and effectively tracking changes within your Migration Center environment.
Cloud Monitoring for Migration Center	Set up Cloud Monitoring for Migration Center to effectively monitor discovery client resource usage and track success rates.
Discovery Client Metrics Dashboard	Create custom dashboards within Cloud Monitoring to track Discovery Client performance metrics and gain insights into its operation.
Cloud Operations Logging	Configure Cloud Operations Logging for centralized log collection and automated alerting specifically for discovery failures within your environment.
Google Cloud Partner Directory	Find certified migration specialists and implementation partners through the Google Cloud Partner Directory for expert support.
Google Cloud Marketplace Migration Tools	Explore the Google Cloud Marketplace for a variety of third-party migration utilities and specialized tools to aid your migration process.
Professional Services Partner Network	Engage with the Professional Services Partner Network for enterprise-scale migration support and expert architectural consulting.
CloudEndure Migration Platform	Consider CloudEndure Migration Platform as an alternative solution when Migration Center does not fully meet your specific requirements.
Carbonite Migration Tools	Utilize Carbonite Migration Tools for comprehensive multi-cloud and cross-platform migration support across diverse environments.
Cloudamize Assessment Platform	The Cloudamize Assessment Platform complements your migration efforts by providing detailed application dependency analysis and insights.
Google Cloud Skills Boost Migration Path	Follow the Google Cloud Skills Boost Migration Path for structured learning and professional development tailored for migration specialists.
Google Cloud Professional Certification	Earn industry-recognized credentials for cloud migration by pursuing Google Cloud Professional Certification to validate your expertise.
Migration Center Training Labs	Gain hands-on practical experience with various Migration Center features through these dedicated training labs.

Google Cloud Migration Center: AI-Optimized Troubleshooting Guide

Configuration Requirements

Discovery Client Service Configuration

Environment Scaling Limits

Resource Requirements

Time Investment Reality

Cost Reality vs Estimates

Critical Warnings

Database Corruption Indicators

Authentication Failure Root Causes

VMware vCenter API Limitations

Implementation Reality

Network Discovery Blind Spots

Version-Specific Issues

Decision Criteria

When to Use Multiple Discovery Clients

Alternative Tool Evaluation

Troubleshooting Decision Trees

Emergency Resolution Priority

Performance Degradation Analysis

Migration Wave Dependencies

Compliance Configuration

Air-Gapped Environment Support

Security Requirements

Resource Links by Use Case

Emergency Troubleshooting

Performance Optimization

Compliance Implementation

Alternative Tools

Useful Links for Further Investigation

Essential Troubleshooting Resources and Emergency Contacts

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