I have to allocate storage in SAN for tempDB that can cater for 3 instances hosted on a single server.
First Instance - Total size of mdf's of DBs are 300 GB
Second Insance - Total size of mdf's of all DB's are 30 GB
Third Instance - Totla Size of mdf's of all DB's are 1 GB
SQL VER: 2008
OS: W2K8 R2
Please advise as to how I can arrive at sizing tempDB space.