Are you running vROps 6.3 or higher?  If so you should be able to select a group of VMs.  Prior to 6.3 the trend view could only display a single resource.

It should allow you to select a folder or resource pool when you run the report.  Do all of the views in your report have the subject set to Virtual Machine?  Are they all trend views or is there another type of view that might not display multiple VMs?  It might be that one of them is preventing you from selecting a group of VMs.  Try starting with one view and testing it, then add one at a time to the report.

Try creating a group for the VMs.  You can't select multiple VMs from a list like in the second screenshot, but you should be able to select a parent object that contains VMs, like a custom group, resource pool, or cluster.  If a group doesn't work can you export the report and attach it?

Hi Guys,

mphilippi, you can run a report with trend view on VM Folder object, in that case, you will see all VMs included in that folder. I guess you got the message "The selected Object is not applicable" because the VM folder you have selected did not contain any VM, and I believe if you try to run the same report on a VM folder which has any VM in it, it should work.

Or you can create a custom group put VMs there and run the report against the custom group.

I have tried on my vROps 6.6 and it works as expected, so I have attached the report, you can just import it into your system and run it on VM folder which contains VMs.

One thing to call out which OP may be looking for is a report showing individual trend lines for each VM. Unfortunately, this is still a feature gap within vROps. Only recently (6.5, I think) was it possible to generate the report (as shown) that contains stacked trend lines. But it's still not possible to have them generate individual trend lines in separate graphs. If that's what you're looking to do, it just isn't possible right now.

I'm astonished that this is STILL not possible with vROps.  Reporting-wise vROps is failing... because reporting is so poor, we more often than not just end up sending screen shots.

You are correct. If you have 100+ VMs need to reporting everyday. It will be nightmare. :-)