2V0-21.23 Question 322
Select 4A vSphere administrator is tasked with configuring Storage I/O Control (SIOC) for a datastore in a vSphere 8.0 environment. The goal is to ensure that virtual machines have balanced access to storage resources during periods of contention. Which of the following steps must the administrator perform to successfully configure SIOC?
- A
Enable Storage I/O Control on the datastore.
- B
Assign shares and set limits for individual virtual machine disk files (VMDKs).
- C
Configure a congestion threshold value for Storage I/O Control.
- D
Ensure the datastore is formatted with VMFS version 5 or later.
- E
Disable all other storage features like Storage DRS before enabling Storage I/O Control.
Show answer and explanation
Correct answers: A, B, C, D
Explanation
To configure Storage I/O Control (SIOC), the administrator must enable the feature on the datastore, configure shares and limits for VMDKs to manage prioritization, and set a congestion threshold to define when SIOC should intervene. Additionally, the datastore must be compatible with the feature, requiring VMFS version 5 or later. Disabling other features like Storage DRS is not necessary, as they can coexist with SIOC.
- A. Correct.
Correct. Enabling Storage I/O Control on the datastore is a necessary step to activate the feature and manage storage resource allocation.
- B. Correct.
Correct. After enabling Storage I/O Control, configuring shares and limits for individual VMDKs is required to prioritize VM disk access during contention.
- C. Correct.
Correct. The congestion threshold defines the latency at which SIOC will start throttling I/O to reduce contention, making it a critical configuration step.
- D. Correct.
Correct. SIOC requires the datastore to be formatted with VMFS version 5 or later to support its functionality.
- E. Incorrect.
Incorrect. Storage I/O Control can coexist with features like Storage DRS. Disabling such features is not a requirement for enabling SIOC.