Challenge
Move a live data center — with no data loss.
The client ran a business-critical virtualized infrastructure in a legacy data center: aging hardware, limited scalability, and real operational risk around redundancy and disaster recovery.
The objective was to migrate the full production environment to a modernized platform with minimal downtime, no data loss, and complete business continuity.
Solution
A staged, rollback-ready migration.
Designed and executed an enterprise-grade migration strategy, run in stages to keep risk low:
- Infrastructure assessment and dependency mapping
- VM replication and synchronization
- Incremental data transfer
- Network reconfiguration planning
- Rollback and disaster recovery procedures
- Final cutover orchestration
A phased synchronization approach let the bulk of data transfer and VM preparation happen before the maintenance window — shrinking the actual cutover.
Results
A near-zero-disruption cutover.
13m 53s
Total downtime
99.98%
Service continuity during migration
0
Reported data corruption
- Zero critical business-process interruption
- Completed within the planned maintenance window
- Successful post-migration validation of all services
- Improved scalability and redundancy
- Enhanced disaster recovery readiness
- Reduced infrastructure risk
- Improved performance and maintainability
- Standardized virtualization environment
Technical specifications
Scale, stack and safeguards.
Infrastructure scale
- 143 virtual machines
- 20 TB replicated data
- Multi-tier application environment
- Production workloads
- Hybrid Windows / Linux infrastructure
- Active Directory integrated services
- High-availability architecture
Virtualization / cloud stack
- Proxmox VE
- NAS storage
- ZFS replication
- Live migration orchestration
- HA clustering
- VLAN segmentation
Networking
- Site-to-site VPN
- Layer 2 migration strategy
- Firewall rule migration
- DNS transition planning
- IP renumbering procedures
- Reverse proxy migration
- Load balancer failover
Reliability / continuity
- Rollback-ready migration plan
- Pre-migration validation
- Snapshot-based recovery points
- Replication integrity verification
- Service dependency mapping
- Disaster recovery procedures
- Multi-stage testing environment