3Ware 9550SXU-16ML User Guide - Page 166

Chapter 8. Configuring Units 3 Tab to the Maintain Unit button and press Enter. 4 In the pop-up menu, select Remove and press Enter. You can now physically remove the drives and move them to another controller. If you have a hot swap carrier, you can do this without shutting down the system. Moving a Unit from One Controller to Another After you have configured a unit on a 3ware 9000 series controller (9500S or 9550SX), you can move it to a different 3ware 9000 series controller, and retain the configuration on the new controller. This is referred to as "array roaming." When connecting the unit to the new controller, you do not have to physically connect the drives to the same ports to which they were connected on the previous controller. The firmware will still recognize the unit. This feature is referred to as "disk roaming." 3DM includes two features that help you do this without powering down the system, allowing you to hot-swap the unit. The Remove Unit feature lets you prepare a unit to be disconnected from the controller, and the Rescan feature checks the controller for drives that are now connected, and updates the 3DM screens with current information. For details, see "Removing a Unit" on page 154 and "Rescanning the Controller" on page 163. Caution: If you have a configured RAID unit on an older controller, such as an 8506, and you move the drives to a new controller, such as 9500-S, you must first convert the units from 7xxx/8xxx format to 9xxx format using a 3ware utility available from 3ware Technical Support. You cannot move drives back from the 9500S/9550SX controller to an older controller and maintain the data. If you want to swap drives back and forth between controller cards, be sure to have a backup of your data. For 9500S controllers, you will also need to unlock the drives, as described under "Unlocking Drives Configured on a 9500S Controller" on page 157. 156 3ware 9550SX Serial ATA RAID Controller User Guide