Troubleshooting › Virtual Machine Backup and Restore Related › Recovery Operations Fail When Recovering Data Using the HOTADD or SAN Transport Mode

Recovery Operations Fail When Recovering Data Using the HOTADD or SAN Transport Mode

Valid on Windows platforms.

Symptom

Recovery operations fail when recovering data using the HOTADD or SAN transport mode. The following message appears in the Activity Log:

An unknown error has occurred. Contact Technical Support.

Solution

Recovery operations fail using the HOTADD transport mode or SAN transport mode when the disk settings are not configured properly.

To configure the disk, perform the following steps:

1. Log in to the backup proxy system using an account with administrative privileges.
2. Open Windows Command Line.
3. From the command line, type the following command:

   diskpart
   

   Press Enter.

4. Type SAN and then press Enter.

   The current SAN policy displays.

5. Type the following command:

   SAN POLICY = OnlineAll
   

   Press Enter.

   The SAN policy is configured as do not automatically mount SAN hosted volumes.

6. To clear the read-only attribute of the specific SAN disk, select the disk from the disk list and type the following command:

   attribute disk clear readonly
   

   Press Enter

7. Type exit and then press Enter.

The disk is configured and you can resubmit the job.

If the job fails again, mount the HOTADD disks manually using disk management on the proxy system.

To mount the disks manually, perform the following steps:

1. Log in to the backup proxy system using an account with administrative privileges.
2. Open Windows Control Panel and double-click Administrative Tools.

   The Administrative Tools window opens.

3. From the Favorites list, double-click Computer Management.

   The Computer Management opens.

4. Expand Storage and click Disk Management.

   The disks display.

5. Right-click the disk that you want to mount and click Online.

The disk is mounted and you can resubmit the job.