Predefined reports about storage tiering

Use storage tier reports to help you determine the best storage-tier configuration for your environment.

Information collection

IBM Spectrum Control collects information from:
  • SAN Volume Controller
  • Storwize V7000
  • Storwize V7000 Unified
IBM Spectrum Control provides reports that show performance and usage data for the SAN Volume Controller, Storwize V7000, and Storwize V7000 Unified systems in your environment.

Workload activity reports

Before you run workload activity reports, you must set the back-end properties of the managed disk (MDisk) groups in your environment.

You can use the IBM Spectrum Control CLI called tcptool to set the back-end properties of MDisk groups. Alternatively, you can set the properties in the MDisk Group Details page in the IBM Spectrum Control GUI.

With the information that is collected from IBM Spectrum Control, you can run workload activity reports. The reports provide information about the workload activity of these resources:
  • Managed disk (MDisk) groups
  • Virtual disks (VDisks) in MDisk groups
  • VDisks in storage resource groups
  • VDisks in storage virtualizers
By analyzing workload activity reports, you can determine:
  • Whether the workload activity of an MDisk group is too low or too high
  • Whether a VDisk should be migrated in one of the following ways:
    • To an MDisk group with a faster read I/O capability rate
    • To an MDisk group with a slower read I/O capability rate
Explanation: In the predefined reports about performance, resources, and historical information, MDisk groups are called pools, and VDisks are called volumes.