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
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