HP 3PAR Application Software Suite for Microsoft Exchange - Manual (Page 19)

2.5 Microsoft Volume Shadow Copy Service
3PAR Recovery Manager 4.1.0 For Microsoft Exchange 2010 User’s Guide
Figure 2-1. 3PAR VSS Provider for Microsoft Windows Operation Overview
Table 2-1. VSS Components
VSS Component VSS Component Description
Requestor The requestor is backup software that initiates the
creation of the shadow copy.
Writer The writer is any application software that participates in
the shadow copy process and whose files and data are
included in the process.
Provider The provider is the storage technology that does the
actual shadow copy.