User`s guide

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3: Operating Storage Enclosures
Checking the Indicator Lights
The enclosure’s indicator lights display the status of the enclosure and its components.
Green indicators mean a normal operating status; amber indicators mean a possible
failure.
It is important that you check all the indicators on the front and rear of the enclosure
when you turn on the power. Besides checking for faults, you can use the indicators on
the front of the enclosure to determine if the drives are responding to I/O transmissions
from the host.
Important: Except as described in the notes following Figure 3-2 and Figure 3-3, an
amber light indicates a component failure. If you see an amber indicator, run TPSSM to
diagnose and repair the problem.
To check the enclosure indicators and operating status, follow the guidelines in Table 3-1
on page 33 (front indicators) and Table 3-2 on page 34 (rear indicators). If any indicators
show anything other than a “normal” status, run TPSSM to diagnose and repair the
problem.
Front Indicator Lights
This section describes the front indicator lights for the controller and expansion
enclosures. Figure 3-2 shows the front indicators for the controller and expansion
enclosures. The numbered callouts (1 through 6) show the disk system status as defined
in Table 3-1 on page 33.
Note: The normal operating state of all indicators on the front panel is green. If an amber
indicator is on, or a green indicator is off, use TPSSM to determine the nature of the fault
and the recovery procedure. Exception: If the drive fault indicators are blinking, it
means that TPSSM is locating a component. It does not indicate a failure.