How many per physical disk VHDs?

I'm new on the ESXi server.  My company is going through the transition from physical servers to virtual servers on one of our contracts.  The client has provided the material for us, but there are a limited number of hard disks of the 'new' server  The server will run three virtual computers, 2 Web servers and a database server.  Each VM has its own dedicated hard disk.  Our old server DB had 11 young readers and our initial plan was to migrate all of them in a virtual drive.  My feeling is that this will cause performance problems because the operating system will treat the separate virtual drives and physical disks and try more I/O that the drive can handle.  I think it might be better to move to a few large virtual drives and their partition into 11 partitions.  Any ideas on that?

For the DB (assuming that MSSQL server), you should have an OS vmdk, one for data files, one for the transaction logs files and possibly one for tempdb files.

That should be enough. It would be better to place the data, logs, and the Tempdb on high performance specifien 9VMFS built RAID 10) but of course, we can always what we want.

Tags: VMware

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