IBM 7133 Series, Service Manual

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|
Hardware Configurations
| This section shows the relationship between the number of disk drive modules and the
| number of fan-and-power-supply assemblies that are present in a 7133.
|
Models 010 and 500
The table in this section shows the possible configurations for Models 010 and 500.
Configuration Number of
Disk Drive
Modules
Without Redundant Power and Cooling:
Must Have: With Redundant Power and Cooling:
Must Have:
Base 4 Base configuration always has redundant
power and cooling. 2 fan-and-power-supply assemblies in
positions 3 and 2
Dummy fan-and-power-supply assembly
in position 1
Dummy disk drive modules in all slots
that do not contain disk drive modules
Expanded 5–8 2 fan-and-power-supply assemblies in
positions 3 and 2
Dummy fan-and-power-supply assembly
in position 1
Dummy disk drive modules in all slots
that do not contain disk drive modules
3 fan-and-power-supply assemblies
Dummy disk drive modules in all slots
that do not contain disk drive modules
Maximum 9–16 Maximum configuration always has
redundant power and cooling. 3 fan-and-power-supply assemblies
Dummy disk drive modules in all slots
that do not contain disk drive modules
Attention: Errors occur if a dummy fan-and-power-supply assembly or a real
fan-and-power-supply assembly is not present in position 1.
If a 7133 is in base or expanded configuration, and does not need a fan-and-power-supply
assembly in position 1, it must have a dummy fan-and-power-supply assembly installed at
that position. The dummy fan-and-power-supply assembly contains the necessary
jumpers to provide power to the redundant power paths of the disk drive modules, and to
provide fan status for the missing fan. A dummy fan-and-power-supply assembly can be
present only in position 1.
|
Models 020 and 600
| Models 020 and 600 always have three fan-and-power-supply assemblies.
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7133 Service Guide