Firstly thank you for all of the fast responses from 
Matthias, Kris and Corinne at Compaq.
My inelegant solution to the problem was to delete the 
UNITS, re-init the containers and add the UNITS back again.
This was not a problem as we had no data on them ... Yet.
Matthias suggested that I upgrade the HBA Firmware which is 
a good Idea anyway and I will arrange to get a copy to the 
Customer ASAP.
Other sugestions included :
- Check the connections are set to Tru64 and not NT
- Confirm that the host connections are allowed access by 
the controller.
- Check zoning configuration
FYI I have included an example of 'show unit' which 
indicates the reservation on the device. I am certain this 
was set by a Tru Cluster, but still don't understand why 
cleanPR does not clear it.
D70                                        S7
        LUN ID:      6000-1FE1-0010-9D50-0009-1070-8013-02F9
        NOIDENTIFIER
        Switches:
          RUN                    NOWRITE_PROTECT        
READ_CACHE
          READAHEAD_CACHE        WRITEBACK_CACHE
          MAXIMUM_CACHED_TRANSFER_SIZE = 32
        Access:
                ALL
        State:
          ONLINE to this controller
          Persistent reserved
          NOPREFERRED_PATH
        Size:             213343869 blocks
        Geometry (C/H/S): ( 41997 / 20 / 254 )
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Received on Wed May 30 2001 - 07:42:04 NZST