TITLE
    Drive Termination for Workgroup Servers (11/94)
Article ID:
Created:
Modified: 		16724
11/9/94
11/9/94
TOPIC



    This article describes drive termination for Workgroup Servers and shows what resistors to remove to disable it.

DISCUSSION


    Hard Drive or DAT drives may need to have the termination resistors removed or made inoperative on certain configurations of multiple drive systems or Workgroup Servers. Below is a brief description of termination requirements for the different systems or Workgroup Servers. Refer to the graphics below for termination locations on the various drives.

    CPU Enclosure Termination
    -------------------- -------------------- ----------------------------
    660 AV/Centris 660AV All use the QFC Hard Drive needs Termination
    Q610 / Centris 610 enclosure
    PM 6100
    W/S 60
    W/S 6150

    IIVX, II VI All use the Lego Hard Drive needs Termination
    Q650 / Centris 650 enclosure
    PM 7100

    Q800, Q800 AV Uses one type of the Last drive in line needs
    of the Frigidaire Termination. Remove
    enclosure termination from all other
    drives installed, including
    DAT

    PM 8100 Uses one type of the Has two internal cables:
    W/S 8150 Frigidaire enclosure 1)Internal/external cable
    requires that all drives
    have no termination.Remove
    termination from all
    internal drives
    (termination is on cable)
    2)The internal channel
    cable (max 1 drive only)
    requires termination

    Q900 Remove termination from all
    Q950 internal drives (termination
    W/S 95 is on cable)
    W/S 9150


    HP DAT Drive
    ------------

    -------------------------------------------------
    | |<-Term PWR |
    | | |<-SCSI 2 |
    | | | |<-SCSI 1 |
    | \|/ \|/ \|/ \|/<-SCSI 0
    | --- --- --- --- |
    | ____________________________/|\_________________ |
    | | O O O O |
    ------------------------------|-------------------
    Remove Jumper to Diable termination ->|


    Conner Drives
    -------------

    ----------------------------------------
    |----------------------------------------|
    | |
    | ----------- ----------- |
    | /|\ /|\ |
    | |-------------| |
    | | |
    | |<- Remove resistor packs to Disable termination.
    | --- |
    | / \ |
    | | | |
    | \ / |
    | --- |
    | |
    | |
    | |
    | |
    | |
    ----------------------------------------


    Quantum Drives
    --------------

    ----------------------------------------
    |----------------------------------------|
    | |
    | ----------- ----------- |
    | /|\ /|\ |
    | |-------------| |
    | | |
    | |<- Remove resistor packs to Disable termination.
    | |
    | |
    | |
    | |
    | |
    | |
    | |
    | |
    | |
    | |
    ----------------------------------------


    IBM Drives
    ----------

    ----
    | | Detail
    | |<-- Se Detail --- ---
    | \ | | --- | |
    | \ | | | | | |
    | \ | -------- -------- |
    | \ | |
    | \ -----------------------------
    | \ |_| |_| |_| |_| |_| |_| |_|
    | \ /|\ /|\ /|\ /|\<-Term
    | | | | |<-SCSI 2 | PWR
    | | | |<-SCSI 1 \|/
    ------------------------ |<-SCSI 0 Remove jumper
    to Disable
    termination


    Support Information Services

Document Information
Product Area: Computers
Category: Workgroup Servers
Sub Category: General Topics

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