3PAR InForm® OS 2.3.1 CLI Reference (320-200166 Rev B, March 2010)

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Command Line Interface Reference InForm OS Version 2.3.1
■ In addition to external accesses by hosts, VVs may be read internally by the system read-
ahead prefetcher. The histvv data includes read-ahead accesses from the prefetcher,
which can cause the read data to appear more than seen by the hosts. Use the
histvlun -vvsum command to see data for only accesses from the host.
■ For this command KB = 1000 bytes.