Understanding the Software Configurations
Understanding SR-IOV Domain Types
In addition to the dedicated domain types (Database Domains and Application Domains running
either Oracle Solaris 10 or Oracle Solaris 11), the following version 2.x SR-IOV (Single-Root I/
O Virtualization) domain types are now also available:
■
■
Root Domains
A Root Domain is an SR-IOV domain that hosts the physical I/O devices, or physical functions
(PFs), such as the IB HCAs and 10GbE NICs installed in the PCIe slots. Almost all of its CPU
and memory resources are parked for later use by I/O Domains. Logical devices, or virtual
functions (VFs), are created from each PF, with each PF hosting 32 VFs.
Because Root Domains host the physical I/O devices, just as dedicated domains currently do,
Root Domains essentially exist at the same level as dedicated domains.
With the introduction of Root Domains, the following parts of the domain configuration for a
SuperCluster are set at the time of the initial installation and can only be changed by an Oracle
representative:
■
Type of domain:
■
Root Domain
■
Application Domain running Oracle Solaris 10 (dedicated domain)
■
Application Domain running Oracle Solaris 11 (dedicated domain)
■
Database Domain (dedicated domain)
■
Number of Root Domains and dedicated domains on the server
A domain can only be a Root Domain if it has either one or two IB HCAs associated with it.
A domain cannot be a Root Domain if it has more than two IB HCAs associated with it. If
you have a domain that has more than two IB HCAs associated with it (for example, the H1-1
domain in an Oracle SuperCluster T5-8), then that domain must be a dedicated domain.
When deciding which domains will be a Root Domain, the last domain must always be the
first Root Domain, and you would start from the last domain in your configuration and go
in for every additional Root Domain. For example, assume you have four domains in your
configuration, and you want two Root Domains and two dedicated domains. In this case,
the first two domains would be dedicated domains and the last two domains would be Root
Domains.
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Oracle SuperCluster T5-8 Owner's Guide • May 2016
Summary of Contents for SuperCluster T5-8
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