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Conference ssag::ask_ssag

Title:Ask the Storage Architecture Group
Notice:Check out our web page at http://www-starch.shr.dec.com
Moderator:SSAG::TERZAN
Created:Wed Oct 15 1986
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:6756
Total number of notes:25276

6344.0. "TSZ07-DA with KZPSA???" by SWAM1::SUKOVICH_RO () Fri Jan 24 1997 17:01

    Hello;
    
    My customer purchased via J.J. Wild (a Digital reseller) and
    item called a CT-EMP10-02. It is basically a dual AS1000 rack-
    mounted in a H9A10 cabinet. Each system has 3 KZPSAs. Bus 1 goes
    first to a BA356 with a DWZZB-VA set for mid bus operation and
    on the single ended side it has devices at target 1,2,3 and 5. The
    bus then goes to a BA350 w/ a DWZZA-VA (set for mid bus operation)
    and has a TZ87-VA at target 0 on the single ended side. The bus then
    goes into a TSZ07-DA (differential 9-TRACK). Initially the cables
    from the KZPSA are as follows: BN21K-02, BN21K-02, and finally a
    -02 from the last DWZZA to the TSZ07. This works fine. When I insert
    a longer cable to move the TSZ07 into another cabinet the disk devices
    which are still close to the CPU (via a -02) do not function.
    
    If I disconnect the TSZ07 from the bus and have the DWZZA and TZ87
    alone at the far end of the long cable everything is O.K.
    
    I have found a list (in the release notes for the KZPSA) of tested
    options, alas the TSZ07 is not among them. Somebody sold it, somebody
    built it  and somebody shipped it. Who gonna help me make it work???
    8*).....
    
    Any ideas?????
    
    Regards;
    
    Bob Sukovich
T.RTitleUserPersonal
Name		DateLines
6344.1Channels Shouldn't Be Passing Off Support...XDELTA::HOFFMANSteve, OpenVMS EngineeringFri Jan 31 1997 08:3911
    
:    I have found a list (in the release notes for the KZPSA) of tested
:    options, alas the TSZ07 is not among them. Somebody sold it, somebody
:    built it  and somebody shipped it. Who gonna help me make it work???
:    8*).....

	The reseller.

	If it's not among our supported configurations, then the support
	falls to the reseller and/or the customer.
6344.2Actually built by CSS.....SWAM1::SUKOVICH_ROFri Jan 31 1997 12:1317
    Built  and qualified by CSS.
    
    P.S. I have acquired their attention and am working it thru them...
    
    Ah the confusion. 
    
    P.P.S. I have made the configuration work by converting a differential
    TSZ07 to single ended and hanging it off the TZ87s BA350. Only drawback
    here is it's $2240.00 per module and $460.00 for my labor times 8
    drives. The customer don't dig it. But.... our AS1000 MEDITECH package
    smokes the Data General solution by such a large margin in performance
    that they find this only a minor problem......in comparison to delays
    in system response.
    
    Regards;
    
    Bob