VMware Certified Professional - Data Center Virtualization (VCP-DCV) Practice Exam

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What are two potential causes for a datastore's Maintenance Mode task to remain at 1%?

Storage DRS is disabled on one or more virtual machine(s) disk(s).
Storage DRS rules prevent migration recommendations for the disk.
Storage DRS datastores have insufficient space to accommodate failover.
Storage DRS provisioning network has been limited with I/O control policies.

The correct answer is: Storage DRS is disabled on one or more virtual machine(s) disk(s).

A datastore's Maintenance Mode task staying at 1% indicates that the system is unable to make progress with the task. One possible cause is that Storage DRS is disabled on one or more virtual machine disk configurations. This means that the virtual machines residing on that datastore will not be managed by Storage DRS for resource allocation and load balancing, which can lead to complications during operational tasks such as entering Maintenance Mode. Since Storage DRS is responsible for managing the distribution of I/O and storage resources effectively, if it's disabled, the datastore may not be able to handle the necessary migrations or provide the required space for operations, causing the task to stall. The other options relate to different aspects of storage management and may contribute to handling processes under different conditions, but they do not directly cause a datastore's Maintenance Mode task to remain stuck at 1%. Storage DRS rules and space limitations are more about managing resources or compliance with specific storage policies, while I/O control policies concern bandwidth rather than directly affecting the ability to enter Maintenance Mode.