
Oracle Cloud Infrastructure for Solutions Architects
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OCI is the only public cloud that supports bare metal and VMs using the same set of APIs, hardware, firmware, software stack, and networking infrastructure. You can see the two models in the following diagram:
Figure 4.1 – Compute instance types
Bare metal instances are instances where customers get the full server. This is also referred to as a single-tenant model. The advantage here is that there is no performance overhead, no shared agents, and no noisy neighbors. For performance and isolation requirements, this is the best instance type. You can see an example of this in the following diagram:
Figure 4.2 – Various workloads for bare metal
On the other spectrum is virtual machines (VMs), where the underlying host is virtualized to provide smaller VMs. This is also referred to as a multi-tenant model. The advantage here is flexibility in regard to what instance...