Hi team!
Here’s a summary about virtual disks cannot be discovered after UltraPath is installed.
[Symptom]
After UltraPath is installed, virtual disks cannot be discovered in the Disk Management window.
[Fault Diagnosis]
Possible faults are as follows:
Fault 1
UltraPath installation fails.
Fault 2
UltraPath for Windows does not support the storage system.
Fault 3
The host does not sense any physical disks. Therefore, virtual disks are not generated.
Fault 4
LUNs mapped to the host are not formatted.
Fault 5
The Microsoft operating system has bugs. The system log file contains an error reported by PlugPlayManager, and the event ID of the error is 271.
Fault 6
The drivers of physical disks are not replaced or the filter of the HBA is not replaced. As a result, the drivers of physical LUNs are not replaced.
[Solution]
Corresponding solutions are as follows:
Solution to fault 1
Uninstall and then reinstall UltraPath.
Solution to fault 2
Add the product model to the product support list of UltraPath.
Solution to fault 3
Manually scan for the device tree, or delete the mappings and add them again.
Check whether the LUN mapping and path connection are normal.
If the LUN mapping and path connection are normal, check whether LUNs on the storage system are in normal state and whether LUNs are reported correctly.
If LUNs on the storage system are in abnormal state, contact Huawei technical support.
Solution to fault 4
Format the LUNs mapped to the host. Then, manually scan for LUNs on the host.
Solution to fault 5
If the operating system is Windows Server 2003 SP1, three methods can be used to resolve the problem.
Method 1
Restart Windows Server 2003 SP1 three times.
Method 2
Upgrade Windows Server 2003 SP1 to Windows Server 2003 SP2.
Method 3
View driver information of physical disks. Uninstall each physical disk whose driver is not mpdev.sys by right-clicking it and choosing Uninstall from the shortcut menu.
Rescan for disks.
If the operating system is Windows Server 2003 SP2, refer to Method 3.
Solution to fault 6
If UltraPath is not installed, go to C:\windows\inf, open .ini files whose names start with oem, and search for the following keywords: MPIODisk, Detected\MPIO, and Root\HWDSM. If any one of the keywords exists, delete the oem.inf and oem.pnf files. If each oem.inf file does not contain any one of the keywords, you can directly install UltraPath.
If UltraPath is installed, right-click Computer on the desktop and choose Manage from the shortcut menu. In the window that is displayed, choose Device Manager in the navigation tree and expand Disk drives in the right pane. View driver information of physical disks. If the driver of a physical disk is not mpdev.sys, the driver is not replaced. Right-click such a disk and choose Uninstall from the shortcut menu. Then, rescan for disks.
In other cases, restart the host.
