Information Technology Reference
In-Depth Information
A Quick Review of Distributed Resource Scheduler Cluster
Performance
Monitoring the detailed performance of a cluster is an important task for any virtual infrastructure
administrator, particularly monitoring the CPU and memory activity of the whole cluster as well as
the respective resource utilization of the VMs within the cluster. h e Summary tab of the details
pane for a cluster object includes information on cluster confi guration as well as statistics for the
current load distribution. Additionally, the View Resource Distribution Chart shows the current
resource distribution of the ESXi hosts in the cluster. While resource allocation and distribution
isn't necessarily a direct indicator of performance, it can be a helpful metric nevertheless.
Working with Distributed Resource Scheduler Rules
To further allow an administrator to customize the behavior of vSphere DRS for their specii c
environment, vSphere lets you create DRS rules. vSphere DRS supports three types of DRS rules:
VM afi nity rules, referred to as Keep Virtual Machines Together in the Web Client
◆
VM anti-afi nity rules, referred to as Separate Virtual Machines in the Web Client
◆
Host afi nity rules, referred to as Virtual Machines To Hosts in the Web Client
◆
Figure 12.22 shows these three types of rules in the dialog box for creating new DRS rules.
Figure 12.22
DRS supports VM
a
nity, VM anti-a
nity,
and host a nity rules.
