IBM SAN Volume Controller 2145-CG8, Hardware Installation Manual

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3. Check for any obvious mechanical problems, such as loose components.
4.
Check any exposed cables and connectors for wear, cracks, or pinching.
Checking the grounding of SAN Volume Controller, the uninterruptible
power supply, and the redundant ac-power switch
Ensure that you understand how to check the grounding of a SAN Volume
Controller, the uninterruptible power supply, and the optional redundant ac-power
switch feature.
About this task
To test the grounding of a SAN Volume Controller node, perform the following
steps. Follow the steps for the SAN Volume Controller configuration that you are
using. Before you start, confirm that you know the SAN Volume Controller model
type, the uninterruptible power-supply type, and whether you are using redundant
ac power. Determine the location of the signal cables that are attached to the SAN
Volume Controller.
When you are asked to test the grounding continuity, use your local procedures to
perform the test. The test is successful if the measured resistance is 0.1 ohm or less.
Attention: Some electrical circuits can be damaged if the external signal cables
are present at the SAN Volume Controller while it is undergoing a grounding test.
Procedure
1. Ensure that the SAN Volume Controller node is powered off. See MAP 5350:
Powering off a SAN Volume Controller node in the
IBM System Storage SAN
Volume Controller Troubleshooting Guide .
2. If the uninterruptible power supply is a 2145 UPS, ensure that other SAN
Volume Controller nodes that are powered from the uninterruptible power
supply are powered off.
3. Use the power button to power off the uninterruptible power supply.
4. Disconnect all signal cables from the SAN Volume Controller node, which
includes the following cables:
v
The Fibre Channel cables
v
The Ethernet cable or cables
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The serial cable that is connected to the uninterruptible power supply
5. Disconnect all signal cables from the uninterruptible power supply. If the
uninterruptible power supply is a 2145 UPS, there might be multiple signal
cables.
6. If the uninterruptible power supply is a 2145 UPS, disconnect any power
cables that are connected to SAN Volume Controller nodes, except the one
that is being tested.
7. If redundant ac power is not used, disconnect the uninterruptible
power-supply power cable from the site power-distribution unit.
8. If redundant ac power is used, turn off any SAN Volume Controller that is
being supplied from the redundant ac-power switch, and remove the power
cable to this system from the redundant ac-power switch.
9.
If redundant ac power is used, disconnect both input power leads from the
site power distribution units.
Safety and environmental notices
xv