We are currently running QC 9.2 on a pair of servers, both are running Win 2003.
We want to upgrade to ALM 11 now but for various reasons IT can't upgrade the boxes to Win 2008 for a few months. http://www.hp.com/go/TDQC_SysReq says that Win 2008 is "preferred" and Win 2003 is "supported". HP support has not been able to provide concrete CONs if we install on Win 2003 now and the upgrade to Win 2008 early next year (when we are out of a testing crunch).
To make us even more apprehensive one of our team members thinks they heard (yes, I know...) that if you install on Win 2003 you can't later uplevel the OS to Win 2008 -- and currently HP can't positively (on won't) say that is not the case.
Can anyone who has upleveled to ALM 11 shed any light on this matter?
We have upgraded from QC v10 to ALM v11 on a Windows 2003 server. When we are ready to go to Windows 2008 server we will likely do a clean install on a new machine. Make note though that technically the QC "upgrade" isn't really an upgrade. You have to uninstall the QC application, which leaves the data on the server, and then install the newer QC application, and then use the Site Admin tools to "upgrade" the databases and repositories to the new data schemas.
Trudy, thanks for this very helpful comment. I think I now understand why HP support was vague on in-place upgrade from Win 2003 to 2008; it now seems to me that they probably validated ALM on both 2003 and 2008, but not on a 2003 system upleveled to 2008.