Storage Subsystems reporting provides a mechanism to view storage capacity for a computer, filesystem, storage subsystem, logical unit number (LUN), Array Sites, Ranks, and disk level. These reports also enable you to view the relationships among the components of a storage subsystem. These reports use data gathered by a probe.
Probes collect statistics on your storage assets, which can include computers, disk controllers, hard disks, clusters, fabrics, storage subsystems, LUNs, tape libraries, file systems, and so forth. The results of probe jobs are stored in the database repository and are used to supply the data necessary for generating a number of reports, including Asset, Capacity, and Storage Subsystem reports. All the information that appears in Storage Subsystem reports is gathered by probe jobs.
Define probe jobs after determining the types of information you want to collect about your storage resources. Once you have defined a probe job, you do not have to redefine that probe job in the future (unless you want to make changes to it). Defining and scheduling a probe job is a one-time task.
In this situation, disks and LUNs will appear to belong to both the SAN Volume Controller and the ESS subsystem (or the FAStT/DS4xxxx subsystem), and will be counted twice in system-wide reports. To avoid this situation, CIMOM access should be set up for either the SAN Volume Controller or for the Disk Array subsystems (ESS or FAStT/DS4xxxx), which it virtualizes.
You can view Storage Subsystem reports in the following ways: