HP 3PAR StoreServ Storage Best Practices Guide

This guide is for system and storage administrators of all levels. Anyone who plans storage policies, configures storage resources, or monitors the storage usage of HP 3PAR StoreServ Storage should read this guide.

HP 3PAR StoreServ is comprised of the following logical data layers:

• Physical disks (PDs)
• Chunklets
• Logical disks (LDs)
• Common provisioning groups (CPGs)
• Virtual volumes (VVs)

The relationship between system data layers is illustrated in figure 1. Each layer is created from elements of the layer above. Chunklets are drawn from physical disks. Logical disks are created from groups of chunklets. Common provisioning groups are groups of logical disks. And virtual volumes use storage space provided by CPGs. The virtual volumes are exported to hosts and are the only data layer visible to hosts.

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