2.7

Table Of Contents
Selecting one or more DB Access Networks allows you to isolate different
database groups from one another, for example, to isolate a QA database group
from a Production database group. When no DB Access Networks have been
assigned in the environment, select the network that is mapped to the Web
Console Network. Do not select internal networks for DB Access Network
traffic.
The figure shows how Data Director resources come from vSphere resource pools, datastores, and port groups.
When administrators create a resource bundle, the resources are always coming from the underlying vSphere
environment.
Figure 2-1. Resources in vSphere and Data Director
vSphere
source RPs
source datastores
source port groups
CPU & memory
network
resource bundle
CPU & memory
network
Data Director
resource bundle
OS
storage
data
storage
backup
storage
log
storage
OS
storage
data
storage
backup
storage
log
storage
“Resource Assignment,” on page 23 explains how resource assignment differs for the different levels of the
hierarchy.
Storage Resources and Data Director
Storage configuration is essential for any successful database deployment, especially in virtual environments
where you can consolidate many different database workloads on a single ESXi host. Your storage subsystem
should provide sufficient I/O throughput as well as storage capacity to accommodate the cumulative needs of
all database virtual machines (DBVMs) running on your ESXi hosts.
Data Director allows you to define virtual disks to which you can map your DBVM's operating system, data,
log, and backup disks. You can then map the virtual disks to different datastores using disk provisioning and
storage allocations that you specify to improve disk usage, performance, and redundancy. For example, you
can create dedicated datastores to service I/O intensive database workloads.
Storage Virtualization Concepts
VMware storage virtualization can be categorized into three layers of storage technology.
n
The storage array is the bottom layer, consisting of physical disks presented as logical disks in the form
of either storage array volumes or logical unit numbers (LUNs) to the layer above.
n
The next layer is the virtual environment occupied by vSphere. Storage array LUNs are presented to ESXi
hosts as datastores and are formatted as VMFS volumes.
Chapter 2 Managing Data Director Resources
VMware, Inc. 21