HP XP20000XP24000 Disk Array - Manual (Page 15)

2 About XP Thin Provisioning
Operations
In XP Thin Provisioning, the storage system stores and manages data on a volume in a pool by using
V-VOLs. This chapter describes the pools and V-VOLs used by XP Thin Provisioning, and then describes
the XP Thin Provisioning functions.
XP Thin Provisioning Components
Pool-VOLs, pools, V-VOLs, volumes, and XP Thin Provisioning software are related to XP Thin Provisioning.
Pool and Virtual Volumes
XP Thin Provisioning stores pool-VOL data in a pool by using V-VOLs. V-VOLs are managed by the V-VOL
management area and are associated with the pool. Therefore, to use XP Thin Provisioning, at least a
V-VOL and a pool are necessary. A V-VOL used in XP Thin Provisioning is called the TP-VOL.
The following figure illustrates the relationship between pools and V-VOLs.
XP24000 Thin Provisioning Software User's Guide 15