Data Domain DD400 Series, User Manual

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173
Hardware Servicing
19
Replacement of components in a restorer falls into two categories: general customer operations and
trained service personnel operations. Replacing parts in the second category requires an awareness
of electrical shock hazards and, in the case of cooling fans, possible mechanical hazards from
rotating fan blades.
Caution
If the internal batteries on the adapter cards fail or internal fuses in the system fail,
return the equipment to the manufacturer. The components are not to be serviced in the
field.
Customer Operations
In a restorer, customer operations are to replace disks and power supplies. Data Domain
recommends timely replacement of components that generate error log messages for failures or are
out of normal operating tolerances. Check with Data Domain Support staff for what constitutes
excessive error messages and out-of-range operating tolerances. After an error message, a
component can continue to degrade, leading to an automatic system shutdown. For example, the
restorer generates a warning message if the interior temperature of the machine reaches 47 degrees
centigrade. If the temperature reaches 50 degrees centigrade, the machine shuts down.
As an addition to error log messages, you can check components by using the restorer command
alerts show current
, which includes messages about power supplies, disks, temperature
extremes, and fans if anything is not within system specifications.
Note
If you see messages for components that are not replaced as a customer operation, contact
the Data Domain field or Support staff.
•
The
Temperature Extremes...
summary displays information about CPU
temperatures and contains an entry if the overall machine temperature is above an acceptable
level.
-
If the overall temperature for the machine reaches 47 degrees centigrade, a warning
message is generated. If the temperature reaches 50 degrees centigrade, the machine shuts
down.