We are continuing to see issues in support where a user has tried to update or deploy ProSphere with an iso or vmdk file that is corrupt. Unlike zip files which will fail to decompress if they are corrupt, you can still use an iso or vmdk file that has not been completely downloaded. However, if you perform an update or install with one of these corrupt files, you will have nothing but trouble with your ProSphere deployment afterwards.
To avoid this problem, we have included a list of MD5 checksums in the ProSphere software download bundles available at support.emc.com. For example, here is the content of the ProSphereUpdateSoftwareChecksums.txt file contained in ProSphere2.0_UpdateSoftware.zip.
There are a number of free tools available that will allow you to open a file and generate its checksum to compare with what we have documented. I am not going to recommend one tool over another, any of them should do the trick. If the checksum returned by the tool matches, it is safe to use the file.
Note that vmdk files are also not immune to this problem. You can easily mount a bad vmdk file to a VM. The typical sign of trouble will be that you are missing important files or directories on the virtual machine. Here is the list of checksums contained in ProSphere2.0_DeploymentSoftware.zip.
At this point I would also like to remind you of the importance of taking a snapshot of your ProSphere virtual machines prior to updating. If for example you inadvertently used a corrupt iso file to apply your ProSphere update, a snapshot would allow you to quickly start over using the complete iso file.
I hope you find these suggestions helpful during your next ProSphere update or deployment.
Message was edited by: Ryan, Updated checksums for ProSphere 2.0.
Thanks Ryan, Those are very good suggestions. I ran up against those problems when I was updating ProSphere and now double/triple check and snapshot before doing upgrades with ProSphere. I don't know why, but I've see bad downloads from the ProSphere downloads; especially when I try to download multiple iso's at once. Now, I only download one at a time.
Do you have checksums for Prosphere 2.0.1, I'm looking for ISO in ProSphere220.127.116.11_UpdateSoftware.zip