Confusion about Microsoft Exchange 2013 RTM.ISO and Cumulative Updates. The installation ISO that I downloaded was 4GB, but the Cumulative Update is only 1.6GB. This is obviously confusing, since this is a departure from the older way of installing things and the documentation seems contradictory.
After a small delay the Exchange team have announced the eagerly awaited release of! Knowledge base article contains a description of CU1. This update will allow on premise installations to co-exist with Exchange 2007 and Exchange 2010. CU1 marks a change in how updates are going to be released and supported by the Exchange team, and this is detailed in a. As always check the to ensure that all support aspects have been met. Exchange 2013 CU1 will support coexistence with Exchange 2007 SP3 RU10 and Exchange 2010 SP3 servers in the same Exchange organisation. Just as before you once the last one has been removed.
For example if you want to maintain the capability to install additional Exchange 2007 servers ensure that you preserve at least one machine that has all the roles. This will allow you to add more Exchange 2007 servers in at a later date. The same also applies for Exchange 2010, once that role has been removed you cannot add additional servers back into the Exchange org. Exchange 2013 RTM’ed at build.032 and CU1 takes this build number to 15.0.620.29 CU Is the New SP (well almost) You can to start thinking of a CU like a service pack in previous versions of Exchange, though it is not 100% the same. There are several good reasons for this:.