HP Hitachi Dynamic Link Manager Software - Manual (Page 476)

A. Functional Differences Between Versions of HDLM
452
following conditions is satisfied, the path status remains
Online
:
• A path is disconnected and is free from any I/O errors
• An LU has been removed from being an HDLM management-target
(2) Automatic Switching of Paths That Have the Online(E), Offline(C), or
Offline(E) Status
In HDLM 5.5 or later, if one of the following conditions is satisfied, the status of
Online(E)
,
Offline(C)
, or
Offline(E)
paths will automatically change to
Online
. In HDLM 5.4 or earlier, even if one of the following conditions is satisfied,
the path status will not automatically change to
Online
:
„ Online(E)
paths
If one of the following conditions is satisfied,
Online(E)
paths will
automatically change to
Online
.
• A path that was disconnected and was free from any I/O errors has been
recovered
• An LU was removed from being an HDLM management-target, and then the
same LU is re-added as an HDLM management-target
„ Offline(C)
paths
When all of the following conditions are satisfied, the connected
Offline(C)
paths are automatically placed
Online
:
• All the online paths are
Online(E)
and the SCSI devices connected to the
Online(E)
paths have been deleted.
• SCSI devices are connected and all the
Offline(E)
paths are subject to
automatic failbacks.
• SCSI devices are connected to the
Offline(C)
paths.
„ Offline(E)
paths, where intermittent errors are thought to have occurred
When the following conditions are satisfied, the connected
Offline(E)
paths
are automatically placed
Online
:
• All the online paths are
Online(E)
and the SCSI devices connected to the
Online(E)
paths have been deleted.
• The SCSI devices are connected to the
Offline(E)
paths.
„ Offline(E)
paths, where intermittent errors are not thought to have occurred
If one of the following conditions is satisfied,
Online(E)
paths will
automatically change to
Online
.
• A path that was disconnected and was free from any I/O errors has been