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Which two statements are true about Exadata X5 cell metrics and alerts?
A. Cell alerts on each storage server are accumulated in memory by the CELLSRV process and stored on a filesystem-based repository.
B. Cell metrics are written to disk every hour by default.
C. Cell metrics on each storage server are accumulated in memory by the CELLSRV process and written to a filesystem-based repository.
D. Cell alerts on each server are accumulated in memory by the MS process and stored on a filesystem-based repository.
E. Cell alerts are written to disk every hour by default.
Correct Answer: BD
Explanation/Reference:
Metrics are a series of measurements that are computed and retained in memory for an interval of time, and stored on a disk for a more permanent history.
On the storage servers, the CELLSRV process provides the majority of Oracle Exadata storage services and is the primary storage software component. One of its functions is to process, collect, and store metrics. The Management Server (MS) process receives the metrics data from CELLSRV, keeps a subset of metrics in memory, and writes to an internal disk-based repository hourly.
References: http://www.oracle.com/technetwork/articles/servers-storage-admin/monitor-exadata-em12-2291964.html
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