In Microsoft Windows 2003 and Windows 2000 operating systems, volumes on new disks are not automatically mounted and assigned drive letters by default when added to the system at boot-up. As a result, when a disk is no longer accessible due to a malfunction (for example, a bad cable), the Windows operating system will treat this as a Removable Disk event. Figure 1 shows the event posted when Windows no longer detects a disk. This can be caused by a failure in the Enclosure unit or a mis-configuration of the storage. Using the ServeRAID Manager, ensure that the device (logical drive) is still available to this initiator.
Figure 1. W2003 – Disk drive disappeared event
Several things can cause a drive to disappear, including a failed path to the storage unit (for example, the DS400). Return to Disk Disappearance to continue with PD Maps (click the Back button on your browser).