HP 3PAR StoreServ 7400 2-node HP 3PAR Command Line Interface Reference (OS 3.1 - Page 161

• If the source or destination are volume sets then the createvvcopy command creates consistent group snapshots at the same point in time so that related structures on different volumes in the group remain consistent. • On systems that support zero_detect, if destination volume is a TPVV, zero_detect policy is enabled at start of physical copy. After physical copy completes, the policy is changed to no_zero_detect, even when the destination TPVV had zero_detect policy enabled before the start of physical copy operation. • When Thin Persistence license is present, createvvcopy command will reclaim allocated space when zero blocks are written to the destination TPVV. • If the -pri option is not specified, the physical copy will start at the default priority. If the tunes and host I/O are running, then it is recommended to start vvcopy with the default priority. • The -online option for an online copy automatically creates a destination volume, so unlike other physical copies, the destination volume should not exist. The destination volume requires a CPG to be specified, and optionally it can be either a TPVV or have a snapshot CPG associated with it. The destination volume can be immediately exported. The -online option cannot be used with the -r, -halt, -s, -b, and -pri options. createvvcopy 161