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# System analyze view (Diagnostic and Historical)

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

Attribute | Description
--- | ---
Name | The storage system ID for each supported system in the domain
Alerts | The number and severity of alerts that are associated with each storage system
Host IOs/sec | The number of host I/O operations performed each second by all storage system volumes, including writes and random and sequential reads
Host MBs/sec | The number of host MBs written and read by all the storage system volumes each second
FE Utilization | The calculated percent of time the front-end directors are busy
BE Utilization | The calculated percent of time the back-end directors are busy
RDF Utilization | The calculated percent of time the SRDF directors are busy. If the utilization value is not available, the number indicates the MBs per second activity between the local and remote storage systems, if both systems are in the managed domain. If the remote system is not in the domain, the value for each of the local R1 links displays without a remote identifier.
% Cache WP | The percent of cache that is busy with write pendings
Disk Utilization | The average utilization across the disk groups - the utilization (time busy) values are 0% to 100%.
Average Fall Thru Time | The average time that it takes a cache slot in LRU0 to be freed up. It is the average time from the first use of the contents to its reuse by another address.