Dell PERC 4/SI - Manual (Page 48)

A progress graph for each selected logical drive displays.
7. When the check is finished, press any key to clear the progress display.
8. Press <Esc> to display the Management Menu.
(To check an individual drive, select Objects—> Logical Drives from the Management Menu, the desired logical drive(s), then Check Consistency on the
action menu.)
Reconstructing Logical Drives: RAID Level Migration and Online Capacity Expansion
A reconstruction occurs when you change the RAID level of an array or add a physical drive to an existing array. RAID level migration changes the array from
one RAID level to another. Online capacity expansion is the addition of hard disk drives to increase storage capacity. You can perform a reconstruction while
the system continues to run, without having to reboot. This avoids downtime and keeps data available to users.
Performing a RAID level migration on a clustered system will change the system to non-clustered mode, causing a cluster mismatch error if the system is
rebooted.
Perform the following steps to reconstruct a drive:
1. Move the arrow key to highlight Reconstruct on the Management Menu.
2. Press <Enter>.
A window entitled "Reconstructables" displays. This contains the logical drives that can be reconstructed. You can press <F2> to view logical drive
information or <Enter> to select the reconstruct option.
3. Press <Enter>.
The next reconstruction window displays. The options on this window are <spacebar> to select or deselect a drive, <Enter> to open the reconstruct
menu, and <F3> to display logical drive information.
4. Press <Enter> to open the reconstruct menu.
The menu items are RAID level, stripe size, and reconstruct.
5. To change the RAID level, select RAID with the arrow key, press <Enter> and select a RAID level from the list that displays.
6. Select Reconstruct and press <Enter> to reconstruct the logical drive.
You are prompted to start the reconstruction. A progress bar for the reconstruction displays.
Drive Roaming
Drive roaming occurs when the hard drives are changed to different target IDs or channels on the same controller. When the drives are placed on different
channels, the controller detects the RAID configuration from the configuration data on the drives.
NOTE: Stay at the Check Consistency menu until the check is complete.
NOTE: After you start the reconstruct process, you must wait until it is complete. Do not reboot, cancel, or exit until the reconstruction is complete.
NOTE: When performing a RAID level migration or an online capacity expansion, a fictional disk may appear in the Windows Disk Management, Dell
OpenManage Array Manager, or Dell OpenManage Storage Services application, if the system is rebooted before the process is finished. This disk can be
ignored and will disappear once the RAID level migration or online capacity expansion is complete.
NOTE: An automatic drive rebuild will not start if you replace a drive during a RAID level migration or an online capacity expansion. The rebuild must be
started manually after the expansion or migration procedure is complete.
NOTE: In a clustering environment, drive roaming is supported within the same channel only.