VMware has a calculator that will estimate the size of the VMware vCenter Update Manager 4.1 (VUM) databases and patch store. Once you enter some key information it will spit out the following results:
- Update Manager 4.1 database deployment model recommendations
- vCenter Update Manager 4.1 Server deployment model recommendations
- Initial disk space utilization in MB for database, patch store, and temporary space
- Monthly disk space utilization growth in MB for database and patch store
- The higher and lower bounds on the estimation, assuming a 20% variance
You can find the estimator here.
Please note some other best practices around VUM:
- You should use a separate database from your vCenter Server database
- Install VUM on the same host as your vCenter Server Host
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