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# External Disk Groups analyze view (Diagnostic and Historical)

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

Table 1. External Disk Groups analyze view (Diagnostic and Historical)
Attribute | Description
--- | ---
ID | The identifier that is assigned to this external disk group
Name | The name of the external disk group
Reads/sec | The average number of host reads performed per second
MBs Read/sec | The throughput per second for the disks that are part of this disk group
Read RT (ms) | The average time that it takes the storage system to perform read operations
Writes/sec | The average number of host writes performed per second
MBs Written/sec | The number of MBs written per second
Write RT (ms) | The average time that it takes the storage system to perform write operations
Total Capacity (GB) | The total available capacity in GBs for disks in the external disk group
% Used Capacity | The total percentage used capacity in GBs for disks in the external disk group
Members | The number of members in the external disk group