I am currently testing the instant recovery feature in B&R. I have Veeam, and Hyper-V installed on the same physical server. The backup repository is also local storage on the same physical server. I created a server 2012 test VM and installed SQL Server.
The instant recovery job is reasonably fast, it takes about 20 seconds. However the server takes over 10 minutes to boot into Windows. Once logged in everything is very sluggish for about 5 more minutes, then normal speeds are observed. What is happening that instant recovery is so slow? Booting the server normally is just fine on this server, I must have something setup incorrectly on the backup or recovery job that is really hurting my instant recovery tests.