Upgrade 2003 to 2008 – not complete – is this OK? Share on Facebook Post on reddit Tweet on Twitter Share on LinkedIn Home › Forums › Server Operating Systems › Windows Server 2008 / 2008 R2 › Upgrade 2003 to 2008 – not complete – is this OK? This topic has 3 replies, 4 voices, and was last updated 7 years, 9 months ago by jamal-r. Viewing 1 post (of 1 total) Author Posts Sternfan2012Member Feb 06, 2013 at 5:57 pm #160859 Hi all, I tried to upgrade from 2003 to 2008 and ran into an issue. What I did: setup two 2008 servers (dc3 & dc4) – ran updates, stressed tested them etc. Have had them up and running for about 6 weeks without issue. ran adrep successfully added dc3 to the domain promoted dc3 – dcpromo = all is well at this point I now have two older 2003 DCs and the new 2008 DC3. At this point I restarted dc4 after running updates and got a “memory parity error.” Basically I am now troubleshooting DC3 for a bad DIMM (or DIMMs). So here’s my question – is there any harm in leaving the domain in this “half state.” I have NOT demoted the 2003 DCs yet – and I do not run a domain unless I have at least two fully functioning DCs… Tonight I am going to run a full memtest on DC3 and when completed successfully will promote it – then demote the old 2003 DCs. Any help on this is greatly appreciated, Rob Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic.