HP Hitachi Dynamic Link Manager Software - Manual (Page 48)

2. HDLM Functions
26
The obtained physical location code is in the
U
aa.bb
-P
cc
-I
dd format. The first
letters,
U
aa.bb, depend on the model of the host. HDLM selects the path with the
lowest value for aabbccdd. When the physical location code is in another format,
the priority of paths is not decided. Note that the top priority path does not change
because of, for example, restarting a computer in the same environment.
Note
Depending on the HBA, you need to repeat steps 2 and 3.
For details on the position of slots, see the manual of the host.
CHA port number
The port number of the CHA.
You can check this number by using the
dlnkmgr
command's
view
operation.
For details on the
view
operation, see 6.7 view (Displays Information).
AutoPATH_ID
The ID assigned to a path. This ID is re-assigned each time the host or the HDLM
Manager is started.
You can check this ID by using the
dlnkmgr
command's
view
operation. For
details on the
view
operation, see 6.7 view (Displays Information).
(3) Automatic failbacks
When a path recovers from an error, HDLM can automatically place the recovered
path back online. This function is called the automatic failback function.
In order to use the automatic failback function, HDLM must already be monitoring
error recovery on a regular basis.
When using the Thunder 9500V series, or Hitachi AMS/WMS series, HDLM will
select the next path to be used first from among the online owner paths, and then from
the online non-owner paths. As a result, if an owner path recovers from an error, and