ArrayMasStor K Series
ÒInstallation Instructions and Procedures.Ó
Copyright
Ó
Advanced Technology and Systems Co., Ltd., 11/2001 Rev. A
27
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will light. On the power supply itself, the status LED(s) will change from Green to Amber (or
extinguish completely), indicating which power supply has failed.
Because the unit comes with redundant power supplies, it is possible to replace a failed power
supply without powering down or otherwise interrupting data flow.
To determine which power supply has failed, carefully examine the LED and fans of both supplies.
The LED of a failed power supply should be amber and the fans of that supply should not be
turning. If you are uncertain which power supply has failed, power down the host and make certain
that the array cache is empty BEFORE removing a power supply.
To check the cache, press the down arrow button once from the LED Ready display. If it reads
ÒEmpty,Ó there is no data in the cache and you may safely power down or remove a suspect power
supply.
Note
: The terminal utility error readout for the power supplies is unable to display
which
power
supply has failed. Check the back of the power supplies themselves to determine which one
has failed.
Once you have determined which power supply has failed, to replace it, turn the hand-screw
counter-clockwise until the power supply is free, raise the handle on the failed unit, and gently pull
the power supply out of the enclosure.
Before sliding a new power supply into the unoccupied bay, you must suspend data transmissions
from the array host. In general, to do this requires pausing all services and software that may access
the data on the array.
WARNING
: If data is still being sent and received when a new power supply is installed in the
unit, it is possible you will encounter data errors
Once data I/O has been suspended by the host, a new power supply can then be gently slid into the
unoccupied space.
Fans
The system also comes with two hot-swappable cooling fans. Both fans are necessary to maintain
adequate airflow throughout the enclosure, particularly over extended periods of time.
If a fan fails, it will register as an error event and be logged and viewable via the LCD display
panel.
After replacing a fan/indicator module, all displays and readouts should reflect that the fan error
has been repaired.
