HP Hitachi Dynamic Link Manager Software - Manual (Page 395)

4. HDLM Operation
371
• A path gets disconnected.
• An LU is deleted.
• A fiber cable connection is changed.
• A Fibre Channel switch's zone setting is changed.
If you want to delete the path whose status is indicated by a hyphen (
-
), execute
the
dlmcfgmgr
utility with the
-u
parameter specified.
For details on this utility, see 7.3 dlmcfgmgr Utility for Managing the HDLM
Configuration.
„ If you deallocate an existing LU and then allocate a new LU to the path that was
used by the deallocated LU, the HDLM device that is allocated to the LU is also
changed. In this case, the HDLM device that had been allocated to the deallocated
LU is deleted and a new HDLM device is allocated to the new LU.
Also, if you replace an existing storage system by a new storage system, a new
HDLM device is allocated to each LU in the storage system even if the LU
configuration of the new storage system is the same as the LU configuration of
the replaced storage system.
(2) Adding a New LU
To add a new LU (HDLM device) to the host on which the HDLM is installed:
1.
Use the management program of the storage system to allocate an LU, which is
not yet allocated to the relevant host, to a port of the storage system that has a path
to the relevant host and configure the path.
For more information on configuring the path, see the manual provided with the
storage system.
2. When you want to add an LU without restarting the host, perform step 3 and step
4. When you want to add an LU while restarting the host, go to step 5.
3. Create a SCSI device for each path configured in step 1.
Since the host has not been restarted, a SCSI device for the LU that was added in
step 1 was not created. Execute the command for adding the device shown in
Table 4-3: Adding or Deleting a SCSI Device to manually create a SCSI device.