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Table Of Contents
vSphere Resource Pools and Data Director
A vSphere resource pool is a logical abstraction for flexible management of CPU and memory resources.You
add CPU and memory resources to Data Director resource bundles by adding a vSphere resource pool to the
bundle.
Data Director has the following types of resource pools.
Resource Pools for
Databases
vSphere administrators create one or more resource pools to enable Data
Director users to create databases. Resource pools for databases require
configuration settings such as DRS and HA enabled, and CPU and memory
limits equal to reservation.
System Resource Pool
There is one system resource pool for one Data Director instance. vSphere
administrators can deploy database virtual machine (DBVM) OVA files into
the system resource pool at any time. The configuration settings for the system
resource pool are different from the configuration settings for database
resource pools. You do not have to enable HA, and CPU, and memory limits
do not have to equal reservations. The reservation must be greater than 0.
You can also enable expandable CPU and memory. See “Create the System
Resource Pool,” on page 26.
CAUTION Data Director can use only resource pools for creating databases if the corresponding cluster is
enabled for DRS and HA. Do not disable DRS. If you do, Data Director cannot use the resource pools even if
you reenable DRS. See “Resource Bundles Become Unusable Because DRS Is Disabled,” on page 214.
Resource pools allow you to group available CPU and memory resources. You can allocate resources explicitly,
or use the resource pool share mechanism. You can hierarchically partition available CPU and memory
resources by grouping resource pools into hierarchies. You can allow different organizations access to different
resource pools. For example, a QA department might need large amounts of CPU and memory for running
tests while the marketing department might require smaller amounts.
Data Director expects you to group the hosts that provide the CPU and memory resources into clusters. Each
cluster owns the resources of all hosts. You can create one or more resource pools for the cluster, which has an
invisible root resource pool. Each resource pool owns some of the cluster's resources. If necessary, you can
create child resource pools. Child resource pools represent successively smaller amounts of CPU and memory.
CAUTION To use Oracle with Data Director, create a cluster specifically for Oracle use. To avoid licensing issues,
assign only resources from your dedicated Oracle cluster to organizations that create and provision Oracle
databases and DBVMs.
How you allocate CPU and memory resources to database groups differs from how you allocate those resources
to databases.
VMware vFabric Data Director Administrator and User Guide
24 VMware, Inc.