How it works...
A path to a LUN includes the Host Bus Adapter (HBA) or initiator, the fabric/network switches, and the storage controllers in the array. The availability of a path will be affected if any of these hardware components along the path fail or stop functioning. Multipathing is a method to configure and maintain multiple paths between the host and the storage array. Although redundant fabric switches will be used to achieve this, the multipathing information available at ESXi will not show the switches involved.
Storage multipathing on an ESXi host is achieved with the help of a framework of APIs called Pluggable Storage Architecture (PSA). The APIs can be used by the storage vendors to write their own Multipathing Plugins (MPP ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access