You can install and use UMDS to download virtual appliance upgrades, patch binaries, patch metadata, and notifications if Update Manager does not have access to the Internet. The machine on which you install UMDS must have Internet access.
You cannot upgrade UMDS 4.x to UMDS 5.5, but under certain conditions you can perform a fresh installation of UMDS 5.5 and use an existing patch store from UMDS 4.x. You can install UMDS only on 64-bit machines.
Before installing UMDS, you must create a database instance and configure it to ensure that all tables are placed in it. You must configure a 32-bit DSN and test the DSN from ODBC. If you are using Microsoft SQL Server 2008 R2 Express, you can install and configure the database when you install UMDS.
Installing UMDS 5.5 in an Environment with Update Manager 5.5 Instances Only
In the UMDS 5.5 installation wizard, you can select the patch store to be an existing download directory from an earlier UMDS 4.x installation and reuse the applicable downloaded updates in UMDS 5.5. You should uninstall existing UMDS 4.x instances before reusing the patch store. Once you associate an existing download directory with UMDS 5.5, you cannot use it with earlier UMDS versions.
If you install UMDS with an existing download directory, make sure that you perform at least one download by using UMDS 5.5 before you export updates.
Installing UMDS 5.5 in an Environment with both Update Manager 4.x and Update Manager 5.x Instances
You should not install UMDS 5.5 with an existing UMDS 4.x download directory if your environment contains both Update Manager 4.x and Update Manager 5.x instances. In such a case, you need a UMDS 4.x and a UMDS 5.x installation on two separate machines, in order to export updates for the respective Update Manager versions.