A.9 differences in the lu dynamic removal function – HP Hitachi Dynamic Link Manager Software User Manual
Page 477
A. Functional Differences Between Versions of HDLM
453
recovered
• An LU was removed from being an HDLM management-target, and then the
same LU is re-added as an HDLM management-target
A.9 Differences in the LU Dynamic Removal Function
Depending on the HDLM version, the LU dynamic removal function differs as
follows:
In HDLM 05-02, and 5.4
• When Remove the LU even if there are Offline(C) paths is not specified
or when the HDLM command
dlnkmgr
set
-rmlu
on
is executed
If none of the paths connected to an LU are
Online
or
Offline(C)
, the LU
will be removed from being an HDLM management-target.
• When Remove the LU even if there are Offline(C) paths is specified or
when the HDLM command
dlnkmgr
set
-rmlu
on
-force
is executed
If none of the paths connected to an LU are
Online
, the LU will be removed
from being an HDLM management-target.
In HDLM 5.5 or later
• When Remove the LU even if there are Offline(C) paths is not specified
or when the HDLM command
dlnkmgr
set
-rmlu
on
is executed
If none of the paths connected to an LU are
Online
or
Offline(C)
, the LU
will be removed from being an HDLM management-target.
However, if one of the following conditions is satisfied, the LU will not be
removed from being an HDLM management-target:
- When an
Offline(E)
path connected to the LU satisfies the conditions to
automatically switch to
Online
. For details about these conditions, see
(2) Automatic Switching of Paths That Have the Online(E), Offline(C), or
Offline(E) Status in A.8 Path Status Transition and Automatic Path
Switching.
- When
Offline(C)
paths are disconnected and changed to
Offline(E)
by an online operation, and as a result, no paths are
Online
• When Remove the LU even if there are Offline(C) paths is specified or
when the HDLM command
dlnkmgr
set
-rmlu
on
-force
is executed
If none of the paths connected to an LU are
Online
, the LU will be removed
from being an HDLM management-target. However, the LU will not be
removed if any
Offline(E)
or
Offline(C)
path satisfies the conditions
to automatically switch to
Online
. For details about these conditions, see
(2) Automatic Switching of Paths That Have the Online(E), Offline(C), or