Can an existing server be used?
After assessing configuration, condition and application support. Upgrading individual parts is not always more economical than replacement.
Is RAID enough to protect data?
No. User error, malware and corrupted data can affect the whole array. A separate backup and recovery strategy is needed.
Are licences included?
OS, virtualisation and application licences are separate items or explicitly included in the specification.
What should be prepared before migrating to a new server?
Prepare application dependencies, data volume, a backup and an agreed maintenance window. Define result checks, the acceptance owner and a rollback procedure in advance.