HP XP Array Manager Software - Manual (Page 170)

S-VOL Secondary or remote volume. The copy volume that receives the data from the
primary volume.
SVP Service processor. A notebook computer built into the disk array. The SVP
provides a direct interface to the disk array and used only by the HP service
representative.
TCz Hitachi TrueCopy™ for Mainframe.
V-VOL
WWN World Wide Name.
Glossary 170