Owner's Manual

144 Performance and Power Monitoring
Network BytesReceived/Second
PacketsReceived/Second
BytesSent/Second
PacketsSent/Second
Sharp deviation
from average
values for an
extended period
of time. Depends
on the type of
network
A sharp increase or
decrease above normal
levels is a strong indicator
of network issues.
Physical
Disk
Physical Disk I/O per
Second
Depends on
manufacturer's
specifications
Check the specified transfer
rate for your disks to
verify that this rate does
not exceed the
specifications. In general,
Ultra Wide SCSI disks
can handle
50 to 70 I/O operations
per second.
Logical
Disk
Free Space Less than 15% Threshold value is relative to
the total amount of disk
space and the average
I/O activity on the system.
NOTE: Starting with
IT Assistant 8.4, IT Assistant
does not display data for the
LogicalDiskFreeSpace
counter on Windows 2000
managed nodes.
Table 7-2. Sample Threshold Settings for Performance and Power Counter
(continued)
Resource Performance Counter
Attribute
Suggested
Threshold
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