Currently, I'm using a server as an online backup and to run some VMs with VMware Server. I'm interested in converting it to VMware ESXi but have some concerns about the possible corruption of my VMDKs if I choose to store my data on them. I was also thinking of storing the data directly on the datastore but can't find any way to mount a VMFS volume with a LiveCD if ESXi is unable to start.
What are my options? Is continuing to use VMware Server is a good idea, knowing that I DO want to use the server for both virtualization and backup purposes.
EDIT: Apparently, I wasn't clear enough. I have offline backups as well. VMs running on this server aren't important, backed up elsewhere and are just here to handle non-critical services.