Symptoms

When the Recovery Guru on the MDSM shows the error "Virtual Disk Not On Preferred Path" you should manual redistribute the virtual disks.

Cause

When data comes to a redundant, dual Controller MD3000(i) over 5 minutes via the nonpreferred path, the failover controller will start to handle the traffic direct but with the error message "Virtual Disk Not On Preferred Path".This can have different causes, like a failed connection, changed in the fabric (storage network with iSCSI), the wrong MPIO driver, an unsupported operating system, etc.

Resolution

To redistribute the Virtual Disks of a MD32xx, MD34xx, MD36xx or MD38xx (SAS + F + I) do the following steps.>> Be aware that minimum the Firmware 07.80.62.60 need to be installed on MD32xx/MD36xx. Open the Modular Disk Storage Manager (MDSM).Connect to the storage.Select the menu Storage.After that click on Virtual Disk.Now a submenu appear, click on Advanced.Than you see another submenu where you have to select Redistribute Virtual Disks... If you select Yes you will see a new window where you can follow the redistributing.

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