I've run Exacq in a VM before with no issues (Citrix Xen Server), but not on an ISR. I've used ISRs in the past, though, and honestly there's nothing terribly special about them other than having very limited internal storage options.
It's really going to come down to the specs of the server. Do you know what they have in it?
I dont know what isr means but I am dealing with three hospitals that had the cisco vsom installed and a hundred or so cisco cameras plus many emcoders added. The susyems seems to run ok, but one site lost their dbase and had to locate and re label all 150 cameras. Support from Cisco and the Hospital corporation hass been the biggest problem, with plant op and security directors waiting for months to get significant questions answered on how to operate, maintain, and back up the sysytems.
ISR is Integrated Services Router. We've seen some issues where camera feeds intermittently pixelize or lose frames. The ISR and virutal environment are supposed to support video cleanly. I just wanted to hear other experiences w/Cisco VSOM, so thanks for the feedback.