I/O Priority Manager; Logical Configuration Sequence - IBM DS8800 Introduction And Planning Manual

Figure 16. Logical configuration sequence
The storage management software can be used in real-time mode. When you are
connected to storage devices over your network, you can use the Real-time
Manager to manage your hardware or configure your storage.

I/O Priority Manager

The performance group attribute associates the logical volume with a performance
group object. Each performance group has an associated performance policy which
determines how the I/O Priority Manager processes I/O operations for the logical
volume.
Disk
Array Site
Rank
Extents
Virtualization
Extent Pool
Logical Volume
Array
= CKD Mod1 Extent in IBM
System z environments
= FB 1GB in an Open
systems Host
Volume Groups
Map Hosts to
Volumes
Volume Group
Chapter 3. Data management features
69