HP StorageWorks X9720, Руководство администратора

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CAUTION: Protect the installed solution from power fluctuations and temporary interruptions with
a regulating Uninterruptible Power Supply (UPS). This device protects the hardware from damage
caused by power surges and voltage spikes, and keeps the system in operation during a power
failure.
CAUTION: To properly ventilate the system, you must provide at least 7.6 centimeters (3.0 inches)
of clearance at the front and back of the device.
CAUTION: When replacing hot-pluggable components in an operational X9720 Network Storage
System, allow approximately 30 seconds between removing the failed component and installing
the replacement. This time is needed to ensure that configuration data about the removed component
is cleared from the system registry. To minimize airflow loss, do not pause for more than a few
minutes. To prevent overheating due to an empty chassis bay, use a blanking panel or leave the
slightly disengaged component in the chassis until the replacement can be made.
CAUTION: Schedule physical configuration changes during periods of low or no activity. If the
system is performing rebuilds, RAID migrations, array expansions LUN expansions, or experiencing
heavy I/O, avoid physical configuration changes such as adding or replacing hard drives or
hot-plugging a controller or any other component. For example, hot-adding or replacing a controller
while under heavy I/O could cause a momentary pause, performance decrease, or loss of access
to the device while the new controller is starting up. When the controller completes the startup
process, full functionality is restored.
CAUTION: Before replacing a hot-pluggable component, ensure that steps have been taken to
prevent loss of data.
Device warnings and precautions 171