I see there are a lot of discussions on this and how you have to upgrade to version 7 first. I am getting ready to do this migration this weekend. It is only two servers and a smaller installation - about 150 phones. Right now I am running on two HP DL 320 G3 servers which are supposed for version 7 and 8 is supported in a bridged mode upgrade. I already have purchased two MCS-7816I5-K9-CMD2 servers which are supported for version 8. The surprise came when I looked and they are not supported for version 7 at all. My plan was to use DMA to migrate from the old HP servers to the new Cisco servers on version 7 and then upgrade to version 8 on the new hardware. Does anyone know if I will be able to install version 7 on these MCS servers even if they are not supported?
Also, what am I able to do before the actual migration? Can I install DMA and install all of the new software beforehand and then point the phones to the new server? I read about the firmware versions on the phone which would be a problem. I want to do as much of this as I can before the weekend because I will have limited down time.
Thank you for your help.