
358 DS8800 Performance Monitoring and Tuning
Figure 9-8 Devices presented to iostat
Another way is shown in Example 9-14. The command, pcmpath query device 1, lists the
paths (hdisks). In this example, the logical disk on the DS8000 has LUN serial number
75065513000. The disk devices presented to the operating system are hdisk4, hdisk2,
hdisk3, and hdisk4, so we can add up the iostats for these four hdisk devices.
Example 9-14 The pcmpath query device command
{CCF-part2:root}/ -> pcmpath query device 1
DEV#: 0 DEVICE NAME: hdisk1 TYPE: 2107900 POLICY: Optimized
SERIAL: 75065513000
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