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# FE Directors analyze view (Diagnostic and Historical)

Analyze views provide in-depth drill-down on storage system data for various collection ranges.

Table 1. FE Directors analyze view (Diagnostic and Historical)
Attribute | Description
--- | ---
Name | The ID of the director
% Busy | The percent of time the director is busy
Host IOs/sec | The number of host commands for data transfer per second
Host MBs/sec | The size (MBs) of the host throughput per second
Reqs/sec | The number of data transfers between the director and the cache. An I/O may require multiple requests depending on I/O size, alignment or both. The requests rate should be either equal to or greater than the I/O rate.
System WP Events/sec | The number of write misses due to the system write pending limit having been reached
Device WP Events/sec | The number of write misses due to the volume write pending limit having been reached

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