Conference ssag::ask_ssag

6341.0. "S/W shadowing H/W stripe sets on a KZPSC single port" by JOBURG::BERETTA () Fri Jan 24 1997 07:23

    Hi,
    
    I have an Alpha 2000 5/300 dual cpu with two KZPSC's, each with 4 disks
    attached (single port controllers). The system is running VMS 7.0.
    
    I have created the first disk on each controler as a JBOD disk and have
    shadowed them using volume shadowing (s/w raid)
    
    Remaining three disks on each controller have been made into stripe
    sets. 
    
    I have been trying to use DR$INIT as documented in the manual to shadow
    the two stripe sets without success. The DR$INIT manages to initialize
    the disks, and even tells me that they are ready for shadowing. But
    when I issue the "$mount dsa1: /shadow=(dra1,drb1) data" command it
    fails with mesages:
    
    MOUNT-F-NOSHDMEM - NO ELIGIBLE SHADOW SET MEMBERS TO MOUNT THE SHADOW SET
    MOUNT-I-SHDWMEMFAIL - DRA1 FAILED AS A MEMBER OF THE SHADOW SET
    SYSTEM-F-IVDEVNAM - INVALID DEVICE NAME
    
    The system disk shadows with no problem i.e. the two jbod disks. At
    present I have the system disk as a single shadow set member, but plan
    to include the second jbod disk into the set.
    
    Any help would be greatly appreciated.
    
    Peter.

You must have a non-zero allocation class set to shadow -- do you?

stephen

    Oops,
    
    Thanks, that was the problem,
    
    Peter.