HP Hitachi Dynamic Link Manager Software - Manual (Page 45)

2. HDLM Functions
23
Figure 2-8: Path switching
(2) Priority of Switching Destination Paths
Priority of paths varies depending on the architecture of the host machine.
If the architecture of the host is CHRP, the switching destination path is selected based
on four keys. First, the path with the smallest path priority number (first key) is
selected. If there are multiple paths with the smallest path priority number, the order
for selecting a unique path is smallest slot number (second key), smallest CHA port
number (third key), and smallest
PATH_ID
value (fourth key).
If the architecture of the host is not CHRP, the switching destination path is selected
based on three keys. First, the path with the smallest path priority number (first key) is
selected. If there are multiple paths with the smallest path priority number, the order
for selecting a unique path is smallest CHA port number (second key) and then
smallest
PATH_ID
value (third key).