You are managing Oracle Cloud Infrastructure (OCI) with several instances and attached block volumes. To optimize performance and cost-efficiency, you consider enabling the detached volume performance autotuning feature in the Block Volume service.
What happens to the performance level of a volume when it is detached from an instance?
A. The performance level remains unchanged.
B. The performance level is adjusted to Balanced.
C. The performance level is adjusted to Lower Cost (0 VPUs/GB).
D. The performance level is adjusted to Higher Performance.
Answer (2)
In Oracle Cloud Infrastructure (OCI), the Block Volume service provides users with the ability to attach and detach block storage volumes to instances. To manage performance and cost-efficiency, especially when dealing with several instances and attached block volumes, OCI offers a feature called 'detached volume performance autotuning.'
When you detach a block volume from an instance, it is typical for the system to automatically adjust the performance of the detached volume. This adjustment is intended to optimize costs since the volume is no longer actively used by running instances. Specifically, the performance level is adjusted to a lower cost tier.
Considering your options, the correct answer is:
(C) The performance level is adjusted to Lower Cost (0 VPUs/GB).
Let's break this down step-by-step:
What happens when a volume is detached?
When a volume is detached, it is no longer being used by any running instance. Therefore, maintaining its high-performance settings may not be cost-effective.
Why is performance adjusted?
By adjusting the performance to a lower tier, such as 0 Volume Performance Units (VPUs) per GB, Oracle Cloud Infrastructure helps reduce the costs incurred from maintaining these volumes. This is useful since storage costs are based not only on the storage capacity but also on the performance settings.
When does this adjustment occur?
This adjustment occurs automatically when the volume is detached. This ensures optimal cost-efficiency without needing manual intervention.
By understanding how OCI manages resources, you can optimize the storage costs effectively while ensuring performance levels meet your requirements when volumes are reattached or when actively in use.
When a block volume is detached from an instance in OCI, its performance level is automatically adjusted to lower cost settings, specifically to 0 VPUs/GB. This change is made to optimize costs since the volume is no longer actively utilized. Therefore, the correct answer is (C) The performance level is adjusted to Lower Cost (0 VPUs/GB).
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