A rescan (Maintenance > Hardware > Actions) forces a rediscovery of disks and enclosures in the storage system. If both storage controllers are online and can communicate with both expansion modules in each connected enclosure, a rescan also reassigns enclosure IDs to follow the enclosure cabling order of controller A. For further cabling information, refer to your product hardware documentation.
You might need to rescan disk channels after system power-up to display enclosures in the proper order. The rescan temporarily pauses all I/O processes, then resumes normal operation. It can take up to two minutes for enclosure IDs to be corrected.
You do not have to perform a manual rescan after inserting or removing non-FDE disks. The controllers automatically detect these changes. When disks are inserted, they are detected after a short delay, which allows the disks to spin up.
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