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

376 Appendix A Functionality Differences Between HDLM Versions
A.2 Differences in LU Dynamic Removal Functionality
Depending on the HDLM version, LU dynamic removal functionality differs as follows:
 In HDLM 5.2 or 5.4
– When Remove the LU even if there are Offline(C) paths is not specified (or when
the following HDLM command is executed: dlnkmgr set -rmlu on)
If none of the paths connected to the LU is 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
following HDLM command is executed: dlnkmgr set -rmlu on -force)
If none of the paths connected to the LU is 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 following HDLM command is executed: dlnkmgr set -rmlu on)
If none of the paths connected to the LU is Online or Offline(C), the LU will be
removed from being an HDLM management-target.
However, if one of the following conditions exists, the LU will not be removed from
being an HDLM management-target:
When an Offline(E) path connected to the LU satisfies the conditions for
automatically switching to Online. For details about these conditions, see
section D.1.2.
When Offline(C) paths are disconnected and changed to Offline(E) by an online
operation, and then no path is Online
– When Remove the LU even if there are Offline(C) paths is specified (or when the
following HDLM command is executed: dlnkmgr set -rmlu on -force)
If none of the paths connected to the LU is 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 for automatically switching to
Online. For details about these conditions, see section D.1.2.
A.3 Differences in Drive Letters Displayed in Windows
Depending on the HDLM version, the Windows drive letters (displayed when all paths
connected to the LU have an error status) differ as follows:
 When the LU dynamic removal functionality is not used in HDLM 5.4
Drive letters are displayed for the disks that are displayed in My Computer.
 When the LU dynamic removal functionality is used in HDLM 5.4, 5.5 or later, or when
the functionality is not used in HDLM 5.5
Drive letters are not displayed for the disks that are displayed in My Computer.