Lost Blocks Alarm
Spotlight raises separate alarms for corrupt and lost blocks. The Lost Blocks alarm is raised when the percentage of lost blocks exceeds a threshold as a proportion of total global cache consistent read requests. Possible causes for this alarms are:
- The Cluster Interconnect has been overloaded by an excessive number of block transfers.
- Checksum processes have been disabled, and can no longer identify lost blocks.
Possible solutions to these problems are:
- To upgrade or reconfigure the cluster interconnect.
- To partition tables or segregate application activity to reduce the number of block transfers.
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