Dell PowerVault DP600 - Manual (Page 100)

100
Performance Object
and Counter
Description Value That Might
Indicate a Problem
Possible Causes
large processing
load on both the
protected computer
and the DPM server.
• A runaway process
is exhausting
system resources.
• The DPM server
does not have
sufficient processing
capacity to handle
the DPM workload.
Physical Disk: Current
Disk Queue Length
(for all instances)
Measures the number
of disk requests that
are currently waiting
and the requests
currently being
serviced.
> 80 requests for
more than 6 minutes.
Indicates possibly
excessive disk
queue length.
• Multiple DPM jobs
that are running
simultaneously are
placing a high
demand on disk
resources.
• Disk performance
needs tuning.
• Disk resources on
the DPM server are
not sufficient for the
current DPM
workload.
See Also
Managing Performance
Improving Performance
Performance is determined by workload and capacity. A slow computer might perform adequately
when it has a very light workload. In contrast, the performance of an extremely powerful computer
might suffer when challenged by an excessive workload. In operations between two computers
on a network, the workload that can be handled effectively will be limited by the component with
the least capacity, whether it is one of the computers or the network connection itself.
As a general rule, you can improve performance by making changes to the workload, the
capacity, or both.