Turning The Power On After An Unexpected Shutdown; Troubleshooting An Overtemp Condition - Silicon Graphics InfiniteStorage S330 RAID User Manual

Turning the Power On after an Unexpected Shutdown

Troubleshooting an Overtemp Condition

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The enclosure (and the entire storage array) may shut down unexpectedly under the following
conditions:
• If the internal temperature of the enclosure exceeds the maximum operating temperature (an
overtemp condition). See the "Troubleshooting an Overtemp Condition" section for more
information on overtemp conditions.
• If there is a general power failure or a loss of power to the storage array.
• If you are forced to shut down the storage array without performing the normal shutdown
procedures (in "Turning the Power Off" on page 34) due to an emergency situation.
Note that in each of these cases, some data may be lost.
Warning:
To avoid damage to the hardware, take special care when restarting the
enclosure after an unexpected shutdown.
If the enclosure shuts down unexpectedly, but there is still power to the site, use TPSSM to
determine if the enclosure has overheated.
• If an overtemp condition is indicated, follow the steps in "Turning the Power On after an
Overtemp Shutdown" on page 32 to restart the drive enclosure.
• If the enclosure has shut down due to a power failure or an emergency shutdown, follow the
steps in "Turning the Power On after an Emergency Shutdown" on page 33 to restart the
enclosure.
If both fan units fail or are unable to maintain an internal temperature below 70
both of the power supplies in the enclosure will shut down. If both power supplies shut down, the
enclosure is inoperable.
TPSSM warns you if the temperature of the enclosure is rising (before it has risen sufficiently to
shut down the power supplies). The first warning comes when the enclosure temperature exceeds
40 º C (104 º F). The enclosure shuts down if the temperature rises above 70
Turning the Power On after an Unexpected Shutdown
º º
C (158 F), one or
º C (158 º F).
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