Hi Theo,
I am successfully backing up SSAS databases following you idea.
It was definitely not straight forward, I had a few issues
as you can see here
and also here
But in my case:
1) I don't have sql server installed on the same machine that I have ssas
2) I don't have ssas installed on the same machine that I have sql server
Now the new challenges are:
1) how do you do a RESTORE VERIFYONLY in SSAS
2) how do you do a DBCC CHECKDB in SSAS
Another thing that I needed done is to delete old SSAS backup files.
this you can see on this link, I have done it using PowerShell, from a remote computer.
It deletes files older than 2 days.
All the scripts are there.
regards
Marcelo