Hi Gerd,
As described in the doc this is what we can get with the Extended availability (SLAs) feature:
This is for the service “Filesystem /”.
I think it would be useful to have a similar view for the host availability itself, e.g:
In the Computation Type of SLA, there is no option for the host level, e.g. “Host state percentage”.
I hope this makes my thoughts a bit clearer.
Cheers
Nicolas