ES45: revision of Memory Channel Controller CCMAB-AA

From: emanuele.lombardi@casaccia.enea.it
Date: Thu Nov 28 2002 - 11:41:36 EST

Dear TruGurus,

today I have a very specific topic concerning an existing
TruCluster wich:

        # OS version is 5.1A 2nd patch applied
        # works perfectly (not even to say!)
        # is made of 2 members: an ES40 and an AS4100.
        # uses MC2 (CCMAB-AA) on both sides
           in a virtual Hub configuration
            (a single cable connects the two controllers)
        # uses an HSZ80 on a shared bus

I want to replace the AS4100 with a new ES45.
I was planning to to as follows:

        1) clu_delete_member AS4100
        2) switch the cluster off
        3) unplug the CCMAB-AA MC2 controller from AS4100
        4) unplug the SCSI controller from AS4100
        5) move the AS4100 from the rack
        6) place the new AS45 into the rack
        7) plug the CCMAB-AA MC2 controller into the ES45
        8) plug the SCSI controller into the ES45
        9) switch on both AS40 and AS45
       10) boot ES40
       11) clu_add_member AS45 from AS40

When I discovered at page 17 of the ES45 Quickspecs
(version 27 november 12,2002) that

        "The MEMORY CHANNEL controller, CCMAB-AA, must be revision D01 or later"

And obviously, not to violate the Murphy's Law,

        my CCMAB-AA controllers both have revision C04

So the questions for you are:
 
        1) Do you think my rev. C04 CCMAB-AA will really not work when
           plugged into the ES45?
        2) If I need to plug a rev. D01 CCMAB-AA into the ES45, will it work when
           directely connected to a rev. C04 CCMAB-AA on the ES40?
        3) Is there any way to update the CCMAB-AA from revision C04 to the new D01
           in order to avoid to buy a new controller?

Thank you for any help (wich will be very apreciated),
Ciao fro Italy,

Emanuele 

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