HP 3PAR OS 3.1.3 Command Line Interface Reference

• 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.
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