Thank you very much for replying my question, Anton.
I am little confused because you wrote, "VMware ESXi does not have any
caches for disk IO to provide 100% data consistency - the only cache
can be in guest OS.".
When I create datastore from SAN Disk, and assign virtual disk from it,
I guess VMware has cache for it, because datastore is a device with
filesystem (VMFS) of VMware (linux).
I think you wrote "the only cache can be in guest OS" for Raw Device
Mapping case only, but I want to make it sure.
Is it correct that "Is VMware has cache for Physical Raw Device Mapping ?
And do you know that s VMware has cache for Virtual Raw Device Mapping ?
Thank you very much.