HP XP7 Storage - Manual (Page 161)

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Check that the hntr2t.dll file exists and the hntr2sys.dll and
hntr2tj.dll files do not exist in the folder, and then delete the
hntr2t.dll file.
Clearing the Persistent Reservation
If the persistent reservation remains in an LU after HDLM is removed, use the
utility for clearing HDLM persistent reservations (dlmpr) to clear the
persistent reservation. However, if you follow the removal procedure in this
manual, the persistent reservation will not remain and will not need to be
deleted manually.
For details about how to clear the persistent reservation in the LU, see The
dlmpr Utility for Clearing HDLM Persistent Reservations on page 7-10 .
Note:
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If HDLM is removed in one of the following situations, the persistent
reservation in the LU will remain:
- When MSCS or VCS is running
- When a cable is not connected to the host
To remove HDLM, follow the procedure in
Removal Procedures - MSCS
or VCS Environment on page 3-88 in Removing HDLM on page 3-86 .
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You can execute this utility if the following conditions are satisfied:
- HDLM has been removed.
- The services and drivers in the cluster system are not running.
Creating an HDLM Environment
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Hitachi Dynamic Link Manager (for Windows®) User Guide