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Conference stkhlm::magtape

Title:MAGNETIC TAPEDRIVES
Moderator:STKHLM::GJOHNSSON
Created:Mon Sep 21 1987
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:3775
Total number of notes:13147

3765.0. "TL894 on CI cluster?" by HGOV08::PATRICKNG () Mon May 26 1997 13:57

    Hi,
    
    Does DS-TL894-BA support FWD?
    
    A customer intends to share TL894 on the CI cluster among serveral
    hosts. The  configuration is below :
    
    HSJ50 -----BC19J-06----DWZZA-AA-----BN21K-10---+---TL894
    OVMS 6.2 1H3                                   |
          -----BC19J-06----DWZZA-AA-----BN21K-10---+
            50 LD    50 LD          68 HD       68 HD
    
    Does the above configuration works?
    
    
T.RTitleUserPersonal
Name
DateLines
3765.1Can be improvedSTOWKS::SLUISHans van Sluis - StorageWorks Engineering Support Europe- DTN 889 9526Mon May 26 1997 15:4018
Patrick,

This will work, but you'll get errors .

Change the config into the following :

HSJ50 <-- BN21H-02 --> BA350 with DWZZA-VA <-- BN36B-0B --> 
      <-- BN21K-xx --> TL894 port 1,2
HSJ50 <-- BN21H-02 --< BA350 with DWZZA-VA <-- BN36B-0B -->
      <-- BN21K-xx --> TL894 port 3,4

Also take a look to entry 2988.*

Keep in mind that the TL894 has 4 TZ89-drives, with 5 MB/sec
per drive. So 20 MB/sec per TL894. Can your CI deliver this ?


Hans
3765.2What is the full configuration?SSDEVO::MARTENSBert Martens, CXO Storage SolutionsTue May 27 1997 23:0012
    Did I miss somthing? Are you planning on connecting the Tape library 
    to more than one controller shelf? Where does that second cable
    connect?
    
    If you try and connect the tape library between "2" sets of
    controllers, you will get a SCSI ID conflict.
    
    Please indicate what the botton cable is connected to.
    
    Regards,
    Bert
    
3765.3Yes, 2 controller pairsSTOWKS::SLUISHans van Sluis - StorageWorks Engineering Support Europe- DTN 889 9526Fri May 30 1997 09:407
Bert,

Yes, I'm proposing to use 2 controller pairs to drive the TL894.
Of course there will be no connection between those 2 pairs (except from 
the CI-interface). 

Hans