HP XP7 Storage - Manual (Page 37)

Online operation: Online operation performed by executing the dlnkmgr
command's online operation.
Offline operation: Offline operation performed by executing the dlnkmgr
command's offline operation.
Figure 2-12 Path Status Transitions (P-VOL in HAM environment)
Legend:
Online operation: Online operation performed by executing the dlnkmgr
command's online operation.
Offline operation: Offline operation performed by executing the dlnkmgr
command's offline operation.
#1
Also when an error occurs in all the paths to an S-VOL in the Online(D)
status.
#2
When I/O operations are processed on an S-VOL.
The last available online path for each LU cannot be placed offline by
executing the offline operation. This ensures access to the LU. For details
on the offline operation, see offline (Places Paths Offline) on page 6-7 . A
path that is recovered from an error by the automatic failback function is
automatically placed in online status.
When you are using intermittent error monitoring, the path in which the
intermittent error occurred is not automatically placed online when the path
recovers from the error. In such a case, place the path online manually.
HDLM Functions
2-19
Hitachi Dynamic Link Manager (for VMware®) User Guide