VDP backup fails because the appliance is unable to hot add disks
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VDP backup fails because the appliance is unable to hot add disks


Article ID: 326459


Updated On:




When backing up a virtual machine on the VDP appliance, the client backup logs displays error similar to:

2017-01-03T08:31:55.207+04:00 avvcbimage Info <40638>: VM Host Name=ashsx1007.amers.ibechtel.com(5.1 build-1612806)

2017-01-03T08:31:56.395+04:00 avvcbimage Info <16041>: VDDK:lib/ssl: protocol list tls1.2

2017-01-03T08:32:16.453+04:00 avvcbimage Info <16041>: VDDK:SSL Error: error:14077102:SSL routines:SSL23_GET_SERVER_HELLO:unsupported protocol

Note: The preceding log excerpts are only examples. Date, time, and environmental variables may vary depending on your environment.


This issue occurs because of backward compatibility of TLS with vSphere 5.5U3.


This issue is resolved in ESXi 5.5 Update 3e or later, available at VMware Patch Downloads. For more information on downloading patch, see How to download patches in Customer Connect (1021623).
To work around this issue if you do not want to upgrade:
  1. Modify one of these two configuration files on the VDDK proxy:
    • The /etc/vmware/config or CommonAppDataFolder\config.ini file sets the entire proxy.
    • The $USER/.vmware/config or %USERNAME%\AppData\config.ini file sets only one user.
  2. Add this line to the appropriate configuration file:

If you are connected to the affected VDP appliance:
Add the line mentioned in step 2 to /etc/vmware/config file. Alternatively, you can add the line to /usr/local/avamarclient/var/vddkconfig.ini file.

Note: If the issue persists, add the line to both the files.

Additional Information

New drive letter & folders containing "CommonAppDataFolder" & "PFiles" is created while Installing or upgrading to vCenter Server 6.0 on Microsoft Windows platform