After the VTL3500 is assigned to the backup server, the OS on the backup server can discover
the assigned virtual tape library/driver, but cannot access the virtual tape library/driver.
Step 1 Check whether the storage device is faulty or abnormal. The assigned device must work in the
Step 2 Check the I/O errors in event logs or the syslog() function. The error message usually starts with
Step 3 Check the version of the HBA driver on the backup server and ensure that the version is certified
by the VTL3500.
Step 4 If the problem persists, contact Huawei Symantec technical support engineers.
The VTL3500 is faulty or abnormal.
The version of the driver on the backup server does not match.
Check the version of the HBA driver on the backup server and ensure that the backup server is