Error Condition Reporting - HP StorageWorks 6100 - Enterprise Virtual Array User Manual

Error Condition Reporting

The EMU constantly monitors enclosure operation and notifies you of conditions that could affect
operation. When an error condition is detected, the following action is taken:
• The EMU alphanumeric display is changed to Er. A condition report has precedence over all
other displays.
• The audible alarm sounds (if it is not disabled).
• The error is stored in the error queue.
• The error is passed to the controllers for processing and display by HP Command View EVA.
NOTE:
An error always generates a condition report. Not all condition reports are generated by errors.
Error condition categories
Each error condition is assigned to a category based on its impact on disk enclosure operation. The
following four error categories are used:
• Unrecoverable — the most severe error condition, it occurs when one or more enclosure components
have failed and have disabled some enclosure functions. The enclosure may be incapable of
correcting, or bypassing the failure, and requires repairs to correct the error.
NOTE:
To maintain data integrity, corrective action should be implemented immediately for an
UNRECOVERABLE condition.
• Critical — occurs when one or more enclosure components have failed or are operating outside
of their specifications. The failures impact the normal operation of some components in the enclos-
ure. Other components within the enclosure may be able to continue normal operations. Prompt
corrective action should be taken to prevent system degradation.
• Noncritical — occurs when one or more components inside the enclosure have failed or are oper-
ating outside of their specifications. The failure of these components does not impact continued
normal operation of the enclosure. All components in the enclosure continue to operate according
to their specifications. The ability of the components to operate correctly may be reduced should
other errors occur. Prompt corrective action should be taken to prevent system degradation.
• Information — the least severe condition indicates a condition exists that does not reduce the
capability of a component. However, the condition can become an error and require corrective
action. An INFORMATION condition provides an early warning, which enables you to prepare
to implement corrective action before a component fails. Correction of the reported problem may
be delayed.
72 Enterprise Virtual Array hardware components