Hi, The VCL currently allows VM Host profiles to identify a single "VM Working Directory Path", which can be either a dedicated or shared disk. All running VMs on a given host will use this datastore path for I/O operations.
In our system, we are using a clustered VM host (VMware vCenter) infrastructure connected to a shared network (SAN) storage array. In the VM host profile, the "Virtual Disk Path" and "VM Working Directory Path" use separate datastores, each of which use distinct storage processors in the SAN. But still, all running VMs in the cluster use the same datastore for their working directories. We have recently been encountering some significant I/O congestion on the host bus adaptors that connect to the VM working directory, resulting in really high I/O latency. My current thinking on this is that I would like to make it possible for a VM host profile to identify multiple paths for the "Working Directory". This would mean that the path for a given VM would be determined via round robin. This would obviously have certain implications for the database and existing provisioning module code, as well as involve some front-end GUI work. Do any of you have thoughts on this? Thanks, Aaron Coburn Systems Administrator and Programmer Academic Technology Services, Amherst College [email protected]
