I'm using a provider of hosted services who provide a VMWare environment (ESX3.5 and vSphere 4.0) to manage multiple VMs. Datastores are provided via iSCSI. My guest OS is Ubuntu Server 9.10. I wish to have two VMs access the same storage area on the SAN, so that a database can be hosted on the SAN and can be accessed simultaneously from multiple VMs.
Is anyone aware of any pitfalls with this configuration in the VMWare environment? Also, what is the best way to enable this configuration? From one VM, I can go to "Edit VM settings/Hardware/Add/Hard Disk" and select "Create a new virtual disk" (the option for "Raw Device Mappings" is grayed out and unavailable). On a second VM I can select this new disk with "Use an existing disk". From the OS of either VM I can now create a partition on the new disk.
Is this approach likely to cause any issues?