Your customer has a requirement to retain frozen point-in-time copies of their data to assist with
internal data retention and to simplify compliance with internal governance procedures. Which
additional HP 3PAR StoreServ software feature is necessary to meet this requirement?

A.
virtual domains

B.
Remote Copy

C.
thin persistence

D.
virtual lock

Explanation:
http://h20195.www2.hp.com/v2/GetPDF.aspx%2F4AA3-6149ENW.pdf
Coupled with reservationless, non-duplicative, read-only virtual copies (snapshots), Virtual Lock
allows you to retain frozen, point-in-time copies of data for eDiscovery and governance purposes.