Bull Escala Power7 Series, Manual

Page: 14 / 148

adapters must be done separately from installing expansion units. Depending on your configuration, it
might be necessary to power off the system to install the GX adapters.
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Expansion units cannot be moved or relocated concurrently. If existing expansion units must be
relocated in the configuration to add the new expansion units, complete the following tasks:
1. Power off the system.
2. Physically relocate the existing expansion units.
3. Power on the system to firmware standby or firmware running state. The relocation of the existing
expansion units is complete.
4. Add the new expansion units.
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Before performing any procedure that involves changes to the 12X cabling or configuration for a
system that is managed by a HMC or SDMC, obtain a record that identifies for each expansion unit
which I/O buses exist in that expansion unit. To acquire this information, use one of the following
methods:
– If your system is managed by an HMC or SDMC, select the managed system and then select the
Properties task.
– If your system is managed by an HMC, enter the following from the HMC command line:
lshwres –r io ——rsubtype bus –m managed_system
– If your system is managed by an SDMC, enter the following from the SDMC command line:
smcli lshwres –r io ——rsubtype bus –m managed_system
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Improper completion of the procedure to connect expansion units can result in unintended I/O
configuration changes, including a change to the bus numbers assigned to existing expansion units.
When bus numbers change, partition profiles cannot find existing I/O resources. If this procedure
completes with unexpected results, contact your next level of support. Your next level of support can
attempt to restore bus numbers, provided that you obtained a record of the original configuration.
Preparing to connect your expansion units
Use this information to plan the installation and configuration of your expansion units.
About this task
This topic collection provides information about connecting your expansion units with 12X and system
power control network (SPCN) cables. This task is a customer task. You can perform this task yourself or
contact a service provider for this service.
To prepare to connect the expansion units, complete the following tasks:
Procedure
1. Decide where you want to install the new expansion units. For details, see “Where to install a new
expansion unit” on page 3.
2. Unpack the expansion units by using the unpacking instructions.
3. Identify the cables. For details, see “Identifying 12X and SPCN cables” on page 3.
4. Plan for cable layout. When you decide where to place the cables, follow your site plan and keep the
following items in mind:
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Avoid creating a safety hazard.
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Avoid damaging the cables.
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Avoid placing cables parallel to high-voltage lines.
5.
Continue with “Connecting your expansion units” on page 8.
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Enclosures and expansion units