Hi,
I am updating our disaster recovery plan and for that I am doing some test restores using EADR. We use the method of creating a bootable ISO. It works fine, so far I was able to restore every single machine with it. However, the restore of a 20GB machine (15GB OS, 5GB data) takes about 45 minutes. During the actual restore it uses about 85% of a Gbit connection all 45 minutes. That's obvious from the backup machine itself as well as on the client I am doing te restore on. 45 minutes at 850Mbps is about 230GB in total. That's over 10 times as much data as needed. The EADR log screen shows it ran at 5.99 MB/sec.
The data comes from a file library on which the drives have a concurrency of 4. Unless I absolutely didn't get it at all that means that theoretically (if both 4 sources were writing at equal speed) my 20GB of data is mingled in about 80GB of actual 'virtual tape space'. Usually the backup host filters the data and only sends the actual required data. Maybe for EADR that works abit different.
In short, why does my 20GB EADR restore use 230GB of network traffic?
