Which HP 3PAR InForm Operating System feature provides Tier 1 resiliency and allows for
non-disruptive online software upgrades on HP 3PAR StoreServ Storage systems without
replying on multipathing software?

A.
HP 3PAR Autonomic Rebalance

B.
HP 3PAR Access Guard

C.
HP 3PAR Persistent Cache

D.
HP 3PAR Persistent Ports

Explanation:
http://h20195.www2.hp.com/V2/GetPDF.aspx%2F4AA3-2542ENW.pdf
HP 3PAR Persistent Ports
HP 3PAR Persistent Ports is another Tier 1 resiliency feature that provides non-disruptive
online software upgrades on HP 3PAR StoreServ Storage without relying on multipathing
software to initiate failover. This feature, available on all HP 3PAR StoreServ models, brings
Tier 1 resiliency across the 3PAR StoreServ product line, including midrange models, by
helping to ensure that host paths remain online throughout the software upgrade process.
The use of standard NPIV (N_Port ID Virtualization) technology enables a single host-facing
3PAR StoreServ port to assume the identity of additional predesignated partner ports, thus
enabling transparent switchover of host path connections.