If you are doing it all once the order really doesn't matter. In addition to the DSMAINT RECREATELHC I would also add DSMAINT RECREATERADE Other than that, DB migrations are pretty easy. If the new DB Server using the same DB Name, Account and Password then you can cheat a little bit by modifying the active .DSN and registry entry and bypass the DSMAINT config command. Joe From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf Of Angela Smith Sent: Friday, May 06, 2011 5:26 PM To: thin@xxxxxxxxxxxxx Subject: [THIN] DSMaint enquiry - moving datastore Hi Im moving the SQL 2005 Datastore from one SQL Server to another. Is there a specific order in changing Windows 2003 XenApp 4.5 servers to a new SQL Server? I was looking at running the following command First Server - Zone Data Collector dsmaint config /user:domain\Domain /pwd:Password /dsn:"C:\Admin\MF20.dsn" Stop the IMA Service and recreate the Local Host Cache by running Dsmaint recreatelhc Verify the new settings by checking the following registry setting: HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\IMA\DataSourceName Repeat Steps on all other XenApp Servers I have a ZDC in our DR Site. Do both ZDC's need to be done first? Can I simply do the ZDC in the Primary site then all other XenApp Servers in Primary site then do ZDC in DR site followed by other DR XenApp servers? Does the order really matter? Thanks Angela