The Historical Summarized Availability workspace shows the managed resource availability (up time) data for the number of months that you specify in the Time Span dialog. This workspace consists of the following two graphical views:
Availability by O/S Type, which shows the percentage of time that managed resources were up and available, grouped by operating system
Availability by Server, which shows the percentage of time that each managed resource was up and available
See also:
Attribute Groups Used by Predefined
Workspaces
Organization of the Predefined Workspaces