we have a Dell Poweredge running Vmware Esxi 4 that is running a raid 1 configuration of 2 x 146Gb SAS HDD. We have run out of space on this storgae group. We would like to replace the drives with 300Gb SAS HDD's. With this, the block size will have to change to 2Mb. The host has two vms running on it. What is the best process to backup these vms, create the new storage group with the hard drives, and restore the VM's?
Any suggestions would be greatly appreciated.