IBM Storwize V7000 Unified Problem Determination Manual page 290

Procedure: Understanding the Storwize V7000 Gen1 system
status using the LEDs
Use this procedure to determine the Storwize V7000 Gen1 system status using the
LED indicators on the system.
About this task
The LEDs provide a general idea of the system status. You can obtain more detail
from the management GUI and the service assistant. Examine the LEDs when you
are not able to access the management GUI or the service assistant, or when the
system is not showing any information about a device.
The procedure shows the status for the enclosure chassis, power supply units and
batteries, and canisters. It does not show the status for the drives.
The first step is to determine the state of the control enclosure, which includes its
power supply units, batteries, and node canisters. Your control enclosure is
operational if you can manage the system using the management GUI. You might
also want to view the status of the individual power supply units, batteries, or
node canisters.
Find the control enclosure for the system that you are troubleshooting. There is one
control enclosure in a system. If you are unsure which one is the control enclosure,
go to "Procedure: Identifying which Storwize V7000 Gen1 enclosure or canister to
service" on page 254.
Procedure
1. Use the state of the ac power failure, power supply OK, fan failure, and dc
262
Storwize V7000 Unified: Problem Determination Guide 2073-720
power failure LEDs on each power supply unit in the enclosure to determine if
there is power to the system, or if there are power problems. Figure 73 on page
263 shows the LEDs on the power supply unit for the 2076-112 or 2076-124. The
LEDs on the power supply units for the 2076-312 and 2076-324 are similar, but
they are not shown here.