Provided that we boot from SAN, is UCS capable of automatically failing-over the OS boot path, should a fabric failure occur? If the answer is NO, isn't it a big serious issue of booting from SAN?
Thanks a lot,
Multipathing applies to boot and data lun and is independant of boot policy
Sorry I don't understand where I misused the term automatic.
The boot policy is a static, very simple construct: first use the first path for booting; it it fails, try the second one ?
Regarding FC multipathing, once the server is up and running: before the fabric failure you have 2 paths, after only one path to the lun (data and boot).
If all uplinks to the Northbound switch fail, or a whole fabric , UCSM will signal link down to all vnics/vhba's of this fabric. (default setting of Network Control Policy -> Action on Uplink failure -> link down)