VCP Storage Management & Availability 2 — Questions and Answers
Question 1: Which vSphere Fault Tolerance (FT) characteristic differentiates it from vSphere High Availability (HA)?
- FT restarts VMs faster than HA after a host failure
- FT provides continuous availability with zero downtime and no data loss (Correct answer)
- FT supports more vCPUs per VM than HA
- FT requires fewer cluster resources than HA
Correct 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.
Question 2: What is the function of Storage vMotion in vSphere?
- It migrates VM memory state between datastores without downtime
- It live-migrates VM disk files from one datastore to another while the VM runs (Correct answer)
- It replicates VM disks to a remote site for disaster recovery
- It converts thick-provisioned disks to thin during migration
Correct 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.
Question 3: In vSAN, what is the 'Failures to Tolerate' (FTT) storage policy setting?
- The number of disk I/O errors before an object is marked degraded
- The number of host or disk failures a VM's storage objects can survive without data loss (Correct answer)
- The maximum number of snapshots allowed before vSAN reclaims space
- The threshold for triggering automatic storage rebalancing
Correct 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.
Question 4: Which vSphere storage feature allows VMs to be placed on the most appropriate storage tier based on their I/O activity automatically?
- Storage DRS (SDRS) (Correct answer)
- Storage I/O Control (SIOC)
- VM Storage Policies
- vSAN Stretched Cluster
Correct 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.
Question 5: What does Storage I/O Control (SIOC) do when datastore latency exceeds a defined threshold?
- It automatically migrates VMs to a less congested datastore
- It throttles I/O shares to fairly distribute datastore bandwidth among VMs (Correct answer)
- It disables thin provisioning to improve performance
- It triggers an HA failover to reduce storage load
Correct 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.
Question 6: Which type of vSphere datastore is created using NFS and mounts a network file share directly from a NAS appliance?
- VMFS over iSCSI
- NFS datastore (Correct answer)
- RDM (Raw Device Mapping)
- vVols datastore
Correct 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.
VCP Storage Management & Availability 2
Which vSphere Fault Tolerance (FT) characteristic differentiates it from vSphere High Availability (HA)?