To practice Dataguard on one machine. You can install two linux servers using VMware. The other settings during the Linux installation are the same. Only the IP addresses are different.

You can install one in C disk and another one using your USB disk. Make sure:

1. Your company has enough resources, both the CPU and the memory;
2. Your disk has enough space, both the C disk and the USB disk.
3. Your USB disk always uses fixed driver letter and path.

How to fix the driver letter and path for your USB disk?

1. Right click “My Computer”, choose “Manage” from the menu
2. Computer Management (Local) -> Storage -> Disk Management
3. Right click your USB disk and choose “Change Driver Letter and Paths…”
4. Click “Change …”
5. Assign a drive letter to this USB disk