18-6 Dell PowerVault 720N, 740N, and 760N System Administrator and Command Reference Guide
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This section describes how the filer reacts to a disk failure when a hot spare disk is
available.
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If a disk fails, the filer continues to run without losing any data but has a somewhat
degraded performance.
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The filer logs a warning message in the /etc/messages file on the root volume every
hour after a disk fails.
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To ensure that you notice the failure, the filer automatically shuts itself off in 24 hours,
by default, or in a period you set with the raid.timeout option to the options
command. You can restart the filer without fixing the disk, but it continues to shut
itself off periodically until you repair the problem.
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After you replace a disk, the filer detects the new disk when the system boots. The
filer starts file service and reconstructs the missing data in the background with mini-
mum interruption to service.
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This section describes how the filer reacts to a disk failure when a hot spare disk is
not available.