VCP Storage Management & Availability 1 — Questions and Answers
Question 1: Which VMware storage technology provides hyperconverged, software-defined storage using direct-attached disks in ESXi hosts?
- VMFS datastore
- NFS datastore
- vSAN (Correct answer)
- Virtual Volumes (vVols)
Correct answer: vSAN
vSAN is VMware's hyperconverged storage solution that aggregates local disks across ESXi hosts into a shared datastore for virtual machines.
Question 2: What is the purpose of VMFS (Virtual Machine File System) in a vSphere environment?
- To provide NAS-based storage for virtual machines over NFS
- To enable multiple ESXi hosts to read and write to shared storage simultaneously (Correct answer)
- To store vCenter configuration and inventory data
- To compress and deduplicate VM disk files automatically
Correct answer: To enable multiple ESXi hosts to read and write to shared storage simultaneously
VMFS is a clustered file system that allows multiple ESXi hosts to concurrently access the same shared storage block device, enabling features like vMotion and HA.
Question 3: Which storage format should be used for virtual machine disks that require the highest performance with no snapshot overhead?
- Thin Provisioned
- Lazy Zeroed Thick (Flat)
- Eager Zeroed Thick (EZT) (Correct answer)
- Sparse Extent
Correct answer: Eager Zeroed Thick (EZT)
Eager Zeroed Thick (EZT) disks are pre-allocated and zeroed at creation time, providing the highest I/O performance and are required for vSphere Fault Tolerance.
Question 4: In vSphere, what is a 'snapshot' and what does it capture?
- A full backup copy of the VM stored on a separate datastore
- A point-in-time record of a VM's disk state, memory, and settings (Correct answer)
- A read-only clone of a virtual machine for testing
- A scheduled backup of VMFS datastore metadata
Correct answer: A point-in-time record of a VM's disk state, memory, and settings
A vSphere snapshot captures the state and data of a virtual machine at a specific point in time, including disk contents, memory state, and VM settings.
Question 5: Which multipathing policy in vSphere sends I/O down a single active path and only switches to another if that path fails?
- Round Robin
- Fixed
- Most Recently Used (MRU) (Correct answer)
- Least Queue Depth
Correct answer: Most Recently Used (MRU)
Most Recently Used (MRU) policy uses the most recently active path for all I/O and only fails over to another path when the active path becomes unavailable.
Question 6: What is the maximum size of a VMFS6 datastore volume in vSphere?
- 2 TB
- 64 TB (Correct answer)
- 128 TB
- 512 TB
Correct answer: 64 TB
VMFS6 supports a maximum datastore volume size of 64 TB, and also introduces automatic space reclamation for thin-provisioned disks.
VCP Storage Management & Availability 1
Which VMware storage technology provides hyperconverged, software-defined storage using direct-attached disks in ESXi hosts?