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    StorageExpress(TM) system: Compatible SIMMs & Install for Memory Upgrade

    
    

    ADDING MEMORY TO THE STORAGEEXPRESS(TM) SYSTEM CONTROL UNIT

    
       This document contains information on the following topics:
    
    
    
            When to upgrade the memory in the StorageExpress system control
    
       unit
    
    
    
            What SIMMs to add to the StorageExpress system control unit
    
    
    
            How to install SIMMs in the StorageExpress system control unit
    
    
    
       When to upgrade the memory in the StorageExpress system control unit
    
    
    
       The StorageExpress I system control unit EL and all XLx models came with
    
       8MB of RAM.  The StorageExpress II system control unit EL and all XLx
    
       models come with 16MB of RAM.
    
    
    
       Use the table below as a guideline for memory requirements.
    
    
    
       StorageExpress
    
       Software Version    1 or 2 Tape Groups  3 or more Tape Groups
    
    
    
       1.11.A.E or earlier 8 MB                8 MB
    
       1.2x.A.E            8 MB                16 MB
    
       1.30.A.E            8 MB                16 MB
    
       1.4x.A.E.           16 MB               32 MB
    
       1.5x                16 MB               32 MB
    
       with NMS            32 MB               32 MB
    
    
    
       What SIMMs to add to the StorageExpress system control unit
    
    
    
       All SIMMs added to the StorageExpress system control unit must be 72
    
       pins, 80 nanoseconds or faster.  SIMMs must be added to the
    
       StorageExpress system control unit in pairs.
    
    
    
       *70 nanosecond SIMMs may be used but will not provide a performance
    
       increase.
    
    
    
       The SIMM slots on the StorageExpress system control unit are tin leaded.
    
        It is recommended that you purchase tin leaded SIMMs however gold
    
       leaded SIMMs will work.
    
    
    
       If you are adding:                     Density to use:
    
    
    
       4MB SIMMs                              1x36
    
       8MB SIMMs                              2x36
    
       16MB SIMMs                             4x36
    
    
    
       Do not mix SIMMs of different RAM size (i.e. 4 MB and 8 MB) in the SIMM
    
       slots.
    
    
    
       How to install SIMMs in the StorageExpress system control unit
    
    
    
       1.  Power down the StorageExpress system using Central Console's Shut
    
       Down command.  Disconnect the power cord from the control unit and
    
    
    
       unplug all connections between the control unit and the tape drive
    
       peripheral unit.
    
    
    
        2.  Remove the (Phillips) retaining screw from the back (in the top
    
       middle) of the control unit.  Pull the cover toward the front, then
    
       carefully lift the cover up and off the control unit.
    
    
    
       3.  Lift the disk drive carrier (this is the component in the center)
    
       straight up to expose the SIMM sockets.
    
    
    
       4.  Do not force the SIMM into the socket.  Use the small notch on one
    
       side of the SIMM to determine its orientation in the socket.  Position
    
       the SIMM at a 45 degree angle and press it down firmly into the socket. 
    
       When the SIMM is aligned correctly, gently rotate the SIMM upright until
    
       it snaps into place.
    
    
    
       If the SIMM does not snap into place, gently spread the retaining clips
    
       to free the SIMM and try again.  Repeat this step for the second SIMM.
    
    
    
       5.  Reverse steps 1 through 3 to put the control unit back together and
    
       power the StorageExpress system on.
    
    

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