Server virtualization has several disadvantages, including:

1. Performance Overhead – Virtual machines (VMs) share hardware resources, which can lead to performance issues if not managed properly.
2. Complex Management – Requires specialized knowledge and tools to configure, maintain, and troubleshoot virtual environments.
3. Security Risks – A single compromised VM can potentially impact others on the same physical server.
4. Licensing Costs – Some software vendors require separate licenses for each VM, increasing costs.
5. Resource Contention – Multiple VMs running on the same server can compete for CPU, memory, and storage, leading to slowdowns.
6. Hardware Dependency – Virtualization may not work optimally on all hardware, requiring investment in compatible infrastructure.
7. Downtime Risks – If the host server fails, all VMs on that server go down unless proper failover mechanisms are in place.

Would you like recommendations on mitigating these challenges?