Virtual machine backup got failed.

[mansoor_sheik]

Hi All,

I found some Virtual machine backup's are failing when running a VMware Policy.Transport mode is set in below priority i,e san,nbd,hotadd,nbdssl.

I created a new policy with nbd alone and added the Failed VM to that policy, VM backup are getting sucessfull.

Daily some New VM  fails, and If I add the same in new policy, it will get sucess.

Any reasons for the issue?

[Michael_G_Ander]

Is the settings the same other than the transport mode ?

Block change tracking requires a full backup to work, so if that is enabled it could be the problem

[mansoor_sheik]

Hi Michael,

Can u elaborate your point.

[Michael_G_Ander]

The question is the failed backup an incremental backup and the working a full backup ?

Please post the job details for the failing backup

[Walker_Yang1]

can you provide more info?

e.g. which OS version on master/media/backup host

which nbu version

which ESXi version

which error you got when backup

which network topology you use?

[mansoor_sheik]

OS - Win 2012 ( Master /Media / Backup host )

which nbu version   -- 7.6.0.3

which ESXi version  -- ESX 5

which error you got when backup -- Snapshot error encountered ( 50 )

which network topology you use? -- san,nbd,hotadd,nbdssl ( hierarchy )