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# Storage Groups analyze view (Diagnostic and Historical)

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

Table 1. Storage Groups analyze view (Diagnostic and Historical)
Attribute | Description
--- | ---
ID | The name that is assigned to this storage group
Host IOs/sec | The number of host read I/O and write I/O operations performed each second by the group
Host MBs/sec | The number MBs performed each second by the group
Read RT (ms) | The time that it takes the group to perform the Reads in milliseconds
Write RT (ms) | The time that it takes the group to perform the Writes in milliseconds
% Hit | The percentage of I/O operations, performed by the group, that were immediately satisfied by cache
% Writes | The percent of I/O operations that were writes
% Read Miss | The percent of read miss operations performed each second by the group. A miss occurs when the requested read data is not found in cache, or the write operation had to wait while data was destaged from cache to the disks.
Allocated Capacity (GB) | The total allocated array capacity
Total Capacity (GB) | The capacity of the storage group in GBs
Members | The number of volumes that are in this storage group