# Making Unconfigured Good Drives and Making a JBOD

When you power-down a controller and insert a new physical drive and if the inserted drive does not contain valid DDF metadata, the drive status is listed as JBOD (Just a Bunch of Drives) when you power the system again. When you power-down a controller and insert a new physical drive and if the drive contains valid DDF metadata, its drive state is Unconfigured Good. A new drive in the JBOD drive state is exposed to the host operating system as a stand-alone drive. You cannot use JBOD drives to create a RAID configuration, because they do not have valid DDF records. Therefore, you must convert JBOD drives to unconfigured good drives.

If the controller supports JBOD drives, the LSI Storage Authority includes options for converting JBOD drives to an unconfigured good drive, or vice versa.

- Making Unconfigured Good Drives
- Making a JBOD

Parent topic: Managing Physical Drives