HP StorageWorks 1510i HP StorageWorks 1510i Modular Smart Array maintenance an - Page 37

Determining whether a component is hot-pluggable, momentary pause, performance decrease

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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 MSA, 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 dis-engaged 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 may cause a momentary pause, performance decrease, or lass of access to the MSA 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. Determining whether a component is hot-pluggable Before removing any serviceable part, determine whether the part is hot-pluggable or non-hot-pluggable. • If the component is hot-pluggable, a power shutdown of the device is not required for replacement of the part. • If the component is not hot-pluggable, the device must be powered down. CAUTION: Be sure the replacement is available before removing a component or blanking panel from the chassis. Open slots dramatically impact airflow and cooling within the device. 1510i Modular Smart Array maintenance and service guide 37

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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 MSA, allow approximately 30 seconds
between removing the failed component and installing the replacement. This time is needed to ensure
that con
fi
guration data about the removed component is cleared from the system registry. To minimize
air
fl
ow 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 dis-engaged component in the chassis until the
replacement can be made.
CAUTION:
Schedule physical con
fi
guration 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
con
fi
guration 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 may cause a
momentary pause, performance decrease, or lass of access to the MSA 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.
Determining whether a component is hot-pluggable
Before removing any serviceable part, determine whether the part is hot-pluggable or non-hot-pluggable.
•
If the component is hot-pluggable, a power shutdown of the device is not required for replacement
of the part.
•
If the component is not hot-pluggable, the device must be powered down.
CAUTION:
Be sure the replacement is available before removing a component or blanking panel from the chassis.
Open slots dramatically impact air
fl
ow and cooling within the device.
1510i Modular Smart Array maintenance and service guide
37