Storage Management & Availability Flashcards

Which vSphere Fault Tolerance (FT) characteristic differentiates it from vSphere High Availability (HA)?

Answer: FT provides continuous availability with zero downtime and no data loss

vSphere Fault Tolerance maintains a live shadow VM that takes over instantly if the primary fails, providing zero-downtime protection compared to HA's restart-based recovery.

What is the function of Storage vMotion in vSphere?

Answer: It live-migrates VM disk files from one datastore to another while the VM runs

Storage vMotion enables live migration of virtual machine disk files between datastores with no VM downtime, allowing storage maintenance and rebalancing.

In vSAN, what is the 'Failures to Tolerate' (FTT) storage policy setting?

Answer: The number of host or disk failures a VM's storage objects can survive without data loss

Failures to Tolerate (FTT) defines how many host, disk, or network failures a storage object can withstand while remaining accessible and intact.

Which vSphere storage feature allows VMs to be placed on the most appropriate storage tier based on their I/O activity automatically?

Answer: Storage DRS (SDRS)

Storage DRS monitors space utilization and I/O latency across datastores in a cluster and automatically migrates VMs to maintain balance.

What does Storage I/O Control (SIOC) do when datastore latency exceeds a defined threshold?

Answer: It throttles I/O shares to fairly distribute datastore bandwidth among VMs

SIOC uses I/O share values to fairly prioritize datastore access among competing VMs when the latency threshold is exceeded, preventing any single VM from monopolizing storage I/O.

Which type of vSphere datastore is created using NFS and mounts a network file share directly from a NAS appliance?

Answer: NFS datastore

An NFS datastore connects ESXi hosts to a Network Attached Storage (NAS) device over an IP network, presenting the NFS share as a datastore for VM storage.