HP Hitachi Dynamic Link Manager Software Licenses - Manual (Page 42)

If none of the paths accessing a single LU are in the Online status, one of
the paths will be changed to the Online(E) status. All the paths that
access the same LU will not be in the offline statuses. This ensures access
to the LU.
The text (E) of Online(E) indicates the error attribute, which indicates that
an error occurred in the path.
•
Online(S) #
The paths to the primary volume (P-VOL) in the HAM environment have
recovered from an error, but I/O to the P-VOL is suppressed.
•
Online(D) #
The paths to the primary volume (P-VOL) in an HAM environment have
recovered from an error, but I/O to the P-VOL is suppressed. If an error
occurs in all the paths to a secondary volume (S-VOL), the status of the
P-VOL paths will be automatically changed to the Online status. To
change the status to the Online(D) status, specify the -dfha parameter
for the HDLM command's online operation.
#
The status changes to this status when using HAM (High Availability
Manager).
The Offline Path Status
The offline path statuses are as follows:
• Offline(C)
The status in which I/O cannot be issued because the offline operation
was executed. For details on the offline operation, see offline (Places
Paths Offline) on page 6-6 .
The (C) indicates the command attribute, which indicates that the path
was placed offline by using the command.
• Offline(E)
The status indicating that an I/O could not be issued on a given path,
because an error occurred on the path.
The (E) in Offline(E) indicates the error attribute, which indicates that an
error occurred in the path.
Status Transitions of a Path
The following figure shows the status transitions of a path.
2-20
HDLM Functions
Hitachi Dynamic Link Manager (for Solaris) User Guide