VMware VCDX Storage Architecture Design

1. In a hybrid storage design, what is the primary purpose of using SSDs in a storage array?

Increase total capacity

Reduce power consumption

Improve I/O performance and latency

Simplify management

2. In a VCDX design, what is the recommended approach for managing storage capacity growth?

Add storage arrays only when full

Plan for 70-80% capacity threshold with proactive expansion

Implement unlimited overprovisioning

Use only external cloud storage

3. What is the primary function of the Storage DRS feature in vSphere?

Encrypt data at rest

Automatically balance VM storage load across datastores

Eliminate storage redundancy

Reduce network bandwidth usage

4. Which storage technology provides the lowest latency for database workloads?

HDD-based RAID 5

All-flash arrays with NVMe

Tape storage

Object storage

5. In VCDX storage design, which metric determines the number of disk groups needed in vSAN?

Total VM count

Required IOPS and capacity

Number of ESXi hosts

Network bandwidth

6. What is the primary benefit of using storage profiles in vSphere?

Reduce network latency

Enforce consistent storage policies across VMs

Eliminate the need for backups

Increase storage capacity automatically

7. Which feature enables automatic failover of storage paths in a multipathed SAN environment?

Static routing

Path failover and load balancing

Manual LUN reassignment

Storage snapshots

8. In vSAN, what is the minimum number of nodes required for a stretched cluster?

2

3

4

6

9. What does RTO represent in storage disaster recovery planning?

Recovery Time Objective

Replication Time Overhead

Real-Time Optimization

Remote Tape Operations

10. Which storage metric is most critical for latency-sensitive applications in VCDX designs?

Total capacity

IOPS and response time

Throughput only

Number of spindles

11. Which storage protocol provides block-level access and is commonly used in SAN environments?

ISCSI

NFS

SMB

HTTP

12. Which vSAN component stores the actual virtual machine data?

Witness node

Disk group

Management network

Stretched cluster

13. What is the recommended queue depth setting for Fibre Channel SANs in VCDX designs?

4

16

32

128

14. Which protocol is preferred for NAS storage in large-scale VCDX environments?

SMB 1.0

NFSv3

NFSv4.1

ISCSI

15. In vSAN architecture, what role does the CMMDS play?

Manages virtual machine snapshots

Cluster monitoring and metadata distribution

Encrypts data at rest

Allocates network bandwidth

16. Which storage feature prevents I/O storms caused by excessive queue depths?

IOPS limiting

Storage I/O Control (SIOC)

Cache coherency

Snapshot management

17. What is the maximum number of LUNs supported per ESXi host in vSphere 7.0?

128

256

512

1024

18. Which component is responsible for managing storage multipathing in vSphere?

VCenter Server

Native Multipathing Plugin (NMP)

VSAN Controller

ESXi firewall

19. In a VCDX design, which RAID level provides the best balance of performance and fault tolerance?

RAID 0

RAID 1

RAID 5

RAID 6

20. What is the primary advantage of using VMFS over NFS for virtual machine storage?

Lower cost

Native locking and clustering support

Better compatibility with Linux

Simpler configuration

VMware VCDX Storage Architecture Design Quiz