Manual

NOTE:
An error alwa ys 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—themostsevereerrorcondition,itoccurswhenoneormoreenclosure
components have failed and have disabled some enclosure functions. The enclosure may be
incapable of c orrecting, or bypassing the failure, and requires repairs to correct the error.
NOTE:
T o maintain data integrity, corrective action should be implemented immediately for an
UNRECOV E RABLE 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
enclosure. 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
operating 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 b ecome an error and require corrective
action. An INFORMATION condition provides an early warning, which enables you to prepare
to implement co rrective action before a comp onent fails. Correction of the reported problem
may be delayed.
Theerrorconditionsareprioritizedbyseverity—frommostseveretoleast. Themostseverecondition
takes precedence and is reported first when multiple errors are detected. The repor ting characteristics
foreacherrorconditionarelistedinTable 18.
Table 18 Error condition reporting c h aracteristics
Error condition Takes precedence over Audible alarm pattern
1
UNRECOVERABL E
All othe
r c onditions
On conti
nuously
CRITICAL
NONCRITICAL and
INFORMATION
Sounds three times per alarm cycle
NONCRITICAL INFORMATION
Sounds two times per alarm cycle
INFORM
ATION
No other conditions Sounds once per alarm cycle
1
The pattern occurs when the condition is the most severe active condition
Error queue
The EMU maintains a n internal error queue for storing error cond itions. Each error condition remains in
the error queue until the problem is co rrected, or for at least 15 seconds after the error is reported. This
ensur
es that when there are multiple errors or a recurring error, each c an be displayed. Each entry in the
error
queue can be displayed using a com bination of the top and bottom buttons. Each error entry in the
queue contains the element t ype, the element number, and the error code.
Enterprise Virtual Array 3000/5000 user guide
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