HiCommand Dynamic Link Manager (HDLM) for Windows Systems User's Guide (HIT5201-96001, January 2008)

HiCommand
®
Dynamic Link Manager (HDLM) for Windows
®
Systems User’s Guide 33
2.7.3.3 Status Transitions of a Path
Figure 2.11 shows the status transitions of a path.
Figure 2.11 Path Status Transitions
Legend:
Online operation: Online operation performed in the Path Management window or by
executing the dlnkmgr command's online operation.
Offline operation: Offline operation performed in the Path Management window or by
executing the dlnkmgr command's offline operation.
#1: During reservation processing for an LU, the Online status is temporarily changed to
Online(P). When the reservation processing finishes, the Online(P) status is changed to
Offline(C).
#2: When the following conditions are satisfied, the connected Offline(C) paths are
automatically placed online:
– All the online paths are Online(E) and SCSI devices connected to the Online(E) paths
have been deleted.
– SCSI devices are connected and all Offline(E) paths are subject to automatic
failback.
– SCSI devices are connected to the Offline(C) paths.
#3: When a path is added dynamically, initially the path status is Offline(C). The path status
will then automatically change to Online. For details on the path dynamic addition
functionality, see
4.6.1.