I have a PowerEdge R910 and H200 RAID Controller.
The System Disk is a single 146GB SAS disk connected to the H200.
I want wo create a mirror (RAID 1) adding a second disk (i still have one) WITHOUT deleting data on the source disk.
How can I do this ?
I have a very short answer for you - this is not possible without loosing data.
Actually there is no RAID information stored on the hard drive so it is not possible to migrate it to a RAID0 oder RAID1.
Solution would be to use 3rd party software to backup/clone the existing drive then create the RAID1 ... initialise the virtual disk and put the OS back on it.