7.1  Before You Start

  Be sure to read the Release Notes chapter in this guide.

  To create an OpenVMS Galaxy on an AlphaServer 4100, you
  must also be familiar with the following configuration and
  hardware requirements:

  Two-instance maximum
  You can run a maximum of two instances of OpenVMS on
  an AlphaServer 4100.

  Console firmware

  You must have AlphaServer 4100 console firmware Version
  AS4_G52-59 (Available on the V7.2 kit).

  Console commands

  In addition to the console hints in Chapter 5,  you should be
  aware of the following:

  *   Enter console commands on one instance at a time.

  *   Do not enter console commands at another console until
      the command entered at the first console has completed.

  AlphaServer 4100 clock

  An AlphaServer 4100 has one clock.  For an OpenVMS
  Galaxy, this means that you cannot run the two instances
  at different times.  Also, the SET TIME command affects
  both instances.  Note that this may not become evident until a
  number of hours have passed.

  Console ports

  COM1 (upper) is the console port for instance 0.
  COM2 (lower) is the console port for instance 1.

  Unlike creating an OpenVMS Galaxy on an AlphaServer

  8400, you do not need additional hardware for the second
  console.  COM-2 is used for this purpose.

  CPUs

  CPU0 must be the primary for instance 0.
  CPU1 must be the primary for instance 1.
  CPUs 2 and 3 are optional secondary CPUs that can be
  migrated.

  I/O adapters

  The four lower PCI slots belong to IOD0, which is the I/O
  adapter for instance 0.
  The four upper PCI slots belong to IOD1, which is the I/O
  adapter for instance 1.

  Storage controllers
  You will need two storage controllers, such as KZPSAs.  These
  can go to separate Storageworks boxes or to the same box for
  running as a SCSI cluster.  One controller each goes in IOD0
  and IOD1.

  Network cards
  If each instance needs network access, a network card (such
  as a DE500) is required for each instance.

  One card each goes in IOD0 and IOD1.

  Physical memory

  Because OpenVMS Galaxy on an AlphaServer 4100 does not
  support memory holes, physical memory for an OpenVMS
  Galaxy environment must be contiguous.  To achieve this on
  an AlphaServer 4100, one of the following must be true:

  *   All memory modules must be the same size (for example,
      1 GB).

  *   If two sizes are present, only one module can be a smaller
      size.  You must put the larger modules into the lower slots.