We are trialling a new TSM for Virtual Environments service which can directly backup VMs via a vCenter server. If you would like to trial this service please see the page on TSM for Virtual Environments for more details.
If you wish to back up virtual machines, then this can be done either as part of the regular backup of the host machine, backing up the virtual machine files; or by registering the virtual machine itself as a TSM node and backing up from within it. For several reasons, it is better for both client and server if you use the latter method, excluding your virtual machine files from backup on the host machine and only backing it up when logged into it. The reasons are:
We therefore recommend that you register your virtual machines individually and exclude them from backup on the host
machine. Files of the type
*.vmem are excluded by default in
HFS releases from March 2007 onwards (TSM 5.4). If you have an earlier release of TSM then you
will need to exclude them yourself: for more information on how to do this, see our page on
how to exclude files and folders from backup.
However, if you have virtual machines that rarely change (such as a development machine), and if you therefore feel that the above points do not apply to you because there would be no frequent sending of large files, then it may be appropriate for you to back them up as normal files. In this case you would need to be sure to remove the aforementioned exclusions in order for the virtual machine files to be backed up.