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There are times with the "Disk Arm Utilization" chart shows
100% utilization of many of the "arms" on this guest.
At that same time the Host shows CPU utilization of 120-160%.
This host serves up disk for 5 lpars. Four of them are IBM i
and one is AIX.
Disk arm utilization only gets high for this one guest.
We have 0.5CPU allocated to this host. Host is running IBM i
7.2 Power 8.
Does this point to anything in particular? Like:
- Does the host need more CPU?
- Do we need to unload/reload the guest and have more NWSD's,
each with less storage spaces? Like shoot for six NWSD's with
six storage spaces apiece, (just for example)?
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