3PAR InForm® OS 2.3.1 Concepts Guide (320-200112 Rev B, February 2010)

2.3
3PAR Storage Concepts and Terminology
InForm OS Version 2.3.1 3PAR InForm OS Concepts Guide
Figure 2-1. InServ Storage Server Data Layers
Hosts
Physical Disks
InServ Storage Servers
Chunklets
Physical disk space allocated
in 256 MB units
Logical Disks
Chunklets arranged as rows of
RAID sets
Virtual Volumes
Storage space
exported to hosts
Matching colors indicate chunklets
are drawn from any available
physical disk and logical disks are
created from any available chunklets
Common Provisioning Groups
Fully-Provisioned
Virtual Volumes
Thinly-Provisioned
Virtual Volumes
Common Provisioning Groups
Virtual pools of logical disk space