What are three ways to be informed of an Exadata Storage Server disk failure?

Question

Options

• Areview of the output of list alerthistory
• Breview of the output of select status from vSdatafile
• Creview of the ILOM log
• Dalert notifications through email when SMTP notification is configured
• Ealert notifications in the Enterprise Manager Exadata Plug-In
• Freview of database server iostat output

• A
  79% (11)
• B
  7% (1)
• E
  14% (2)

Explanation

The first step requires that you identify the problem disk. This could occur in several ways: - Hardware monitoring using ILOM may report a problem disk. - If a disk fails, an Exadata alert is generated. The alert includes specific instructions for replacing the disk. If you have configured the system for alert notifications, the alert will be sent to the designated email address or SNMP target. The LIST ALERTHISTORY command could also be used to identify a failed disk. - The LIST PHYSICALDISK command may identify a disk reporting an abnormal status. Even if the cell is still functioning, the problem may be a precursor to a disk failure. - The CALIBRATE command may identify a disk delivering abnormally low throughput or I/Os per second (IOPS). Even if the cell is still functioning, a single bad physical disk can degrade the performance of other good disks; so, you may decide to replace the identified disk. Note that running CALIBRATE at the same time as the cell is active will impact performance.

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