6.0.1

Table 1‑38. Data Counters
Chart Label Description
Read IOPs per Virtual
Machine Disk
Number of disk read commands completed on each virtual machine disk, per second.
Read rate = blocks read per second × block size
n
Counter: numberReadAveraged
n
Stats Type: Rate
n
Unit: Number
n
Rollup Type: Average
n
Collection Level: 3
Write IOPs per Virtual Machine Disk
This chart displays the ten virtual machines with the highest number of write operations. Data is not
displayed when the virtual machine is powered off.
This chart is located in the Performance view of the datastore Performance tab.
Table 1‑39. Data Counters
Chart Label Description
Write IOPs per Virtual
Machine Disk
Number of disk write commands completed on each virtual machine disk on the host.
Write rate = blocks read per second × block size
n
Counter: numberWriteAveraged
n
Stats Type: Rate
n
Unit: Number
n
Rollup Type: Average
n
Collection Level: 3
Virtual Machine Observed Latency per Datastore
This chart displays the average datastore latency as observed by the virtual machines.
This chart is located in the Performance view of the datastore cluster Performance tab.
Table 1‑40. Data Counters
Chart Label Description
VM observed latency
report per Datastore
This is the average datastore latency as observed by the virtual machines in the datastore
cluster.
n
Counter: datastoreVMObservedLatency
n
Stats Type: Absolute
n
Unit: Microseconds
n
Rollup Type: Latest
n
Collection Level: 3
Hosts
The hosts charts contain information about CPU, disk, memory, network, and storage usage for hosts. The
help topic for each chart contains information about the data counters displayed in that chart. The counters
available are determined by the collection level set for vCenter Server.
CPU (%)
The CPU (%) chart displays CPU usage for the host.
This chart is located in the Home view of the Host Performance tab.
vSphere Monitoring and Performance
34 VMware, Inc.