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| Section | Weight | Objectives |
|---|---|---|
| Integration and Automation | 20% | - Automate storage provisioning and management tasks - Integrate storage components with other VMware Cloud Foundation services - Use APIs and command-line tools for storage management |
| Storage Architecture and Design | 25% | - Integrate external storage arrays with VMware Cloud Foundation - Design vSAN storage solutions for VMware Cloud Foundation - Plan for storage capacity, performance, and availability requirements |
| Storage Optimization and Troubleshooting | 25% | - Troubleshoot common storage issues in VMware Cloud Foundation - Perform health checks and implement remediation - Monitor and optimize storage performance and capacity |
| Storage Configuration and Management | 30% | - Implement and manage storage policies - Configure and manage vSAN in a VMware Cloud Foundation environment - Manage data services (deduplication, compression, encryption) |
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11. Frage
An administrator is responsible for managing a VMware Cloud Foundation (VCF) Private Cloud.
The following information has been provided about the environment:
* There are 3 customer datacenters, Site A, Site B and Site C.
* The datacenter at Site A runs all Production Services.
* The datacenter at Site B has reached capacity and there is no space for additional physical hardware.
* The datacenter at Site C has been commissioned to replace Site B, because there is more rack space and power capacity to cater for future demand.
The administrator has been tasked with identifying the networking requirements for a new VMware vSAN Stretched Cluster with the following requirements:
* The solution will deploy a total of 10 new ESX host servers to create a VMware vSAN Stretched Cluster.
* The solution must deploy appropriate networking to ensure minimal disruption from issues with Spanning Tree Protocol (STP).
Drag and drop the correct vSAN Site Type, Networking Type and Round Trip Latency (RTT) within the boxes provided to complete the high-level diagram.
Antwort:
Begründung:
Explanation:
Site A = Data Site; Site B = Witness Site; Site C = Data Site; Site A # Site C = Layer 3, RTT < 5 ms; Site A # Site B = Layer 3, RTT < 200 ms; Site B # Site C = Layer 3, RTT < 200 ms Site A and Site C should be the data sites because Site A hosts production services and Site C has been commissioned to replace the capacity-constrained Site B.
Site B should be used as the witness site because it has no space for additional physical hosts, and a vSAN witness appliance does not run workload VMs. A vSAN Stretched Cluster requires two availability zones for data nodes and a third site for the witness appliance. The data-site-to-data-site connection carries synchronous vSAN data traffic and must meet less than 5 ms RTT. The witness site carries metadata traffic only, so the data- site-to-witness links support higher latency, with less than 200 ms RTT for up to 10 hosts per site.
Because the requirement specifically calls out minimizing disruption from STP, Layer 3 is the preferred network type between sites. VMware states that Layer 3 helps avoid STP redirecting traffic across undesirable links, such as constrained witness links. Reference topics: vSAN Stretched Cluster Network Design, Data Site and Witness Site Placement, Layer 3 Recommendation, RTT Requirements.
12. Frage
What is a vSAN disk group composed of?
Antwort: A
13. Frage
An administrator is planning the deployment of a new VMware Cloud Foundation (VCF) Workload Domain.
The storage design decisions for the solution are:
* NFS
* NVMe over RDMA
* No local storage is available to the hosts
What is the storage solution build order for the Workload Domain?
Antwort: A
Begründung:
NFS must be used as principal storage because the hosts have no local storage available. vSAN OSA and vSAN ESA both require local storage devices on the ESX hosts to create the vSAN datastore, so neither can be selected as principal storage in this design. NVMe over RDMA is supported as a high- performance NVMe over Fabrics transport in vSphere, but in the VCF storage model it is treated as supplemental storage rather than principal storage for workload domain creation. Therefore, NVMe over RDMA cannot be the initial principal datastore used to build the Workload Domain. NFS is the valid principal storage option from the provided choices, and after the Workload Domain is created, NVMe over RDMA can be added as supplemental storage for additional performance or capacity use cases. This build order satisfies the lack of local disks, uses a supported principal storage type, and allows the NVMe over RDMA design requirement to be met after the domain exists. Reference topics:
Principal Storage, Supplemental Storage, NFS Storage Model, NVMe over RDMA, VCF Workload Domain Storage Design.
14. Frage
A multinational corporation is deploying a VMware Cloud Foundation (VCF) Workload Domain cluster to host tier-1 business applications with the following requirements:
* Deliver high performance to all workloads.
* Integration with automated VM placement.
* Reuse of existing infrastructure including multiple Fibre Channel (FC) arrays partitioned by business unit.
* The storage architecture must avoid vSAN.
* Meet organizational separation requirements.
Which two deployment approaches meet these requirements? (Choose two.)
Antwort: A,D
Begründung:
Dedicated VMFS datastores on assigned Fibre Channel arrays meet both the performance and separation requirements. VCF supports Fibre Channel-backed VMFS as principal storage for workload domains, making it valid as the primary datastore type for the tier-1 business application cluster. Fibre Channel provides low-latency block storage, resilient pathing, SAN zoning, LUN masking, and mature enterprise performance characteristics. Because the existing FC arrays are partitioned by business unit, dedicated datastores preserve organizational separation and avoid mixing business-unit workloads on shared storage resources. The same dedicated FC-backed VMFS approach can also be used as supplemental storage after the workload domain exists, allowing extra capacity or specialized tiers while maintaining separation. Shared VMFS datastores do not satisfy the organizational separation requirement because they allow multiple business units to consume the same datastore boundary. vSAN is explicitly excluded, so the design must rely on supported non-vSAN storage. Automated VM placement can be supported by VMFS datastore clusters and Storage DRS where datastores are compatible and similarly managed. Reference topics: Fibre Channel Storage Model, VMFS Datastores, Principal Storage, Supplemental Storage, Datastore Clusters.
15. Frage
During maintenance on hosts in a four-node vSAN cluster, a host is placed in maintenance mode with the
"Ensure Accessibility" option.
All VMs are running with the Default Storage Policy (RAID-1, FTT=1) which has not been modified from the default settings.
While one of the hosts in the cluster is down for firmware upgrade, a second host in the cluster loses network connectivity.
How will the cluster be affected?
Antwort: B
Begründung:
With "Ensure Accessibility," vSAN migrates only the minimum amount of data required to keep objects accessible while the host enters maintenance mode. This mode is faster than Full Data Migration, but it does not fully reprotect all objects. The documentation states that objects might no longer be fully compliant with their storage policy during this evacuation mode, meaning they might not have access to all replicas. Because the default policy is RAID-1 with FTT=1, each object can tolerate only one failure. While the first host is in maintenance mode, some VM objects are already running in a reduced-availability state. If a second host loses network connectivity during this window, affected objects can lose quorum or access to required components.
vSAN does not immediately rebalance or fully rebuild objects simply because Ensure Accessibility was selected, and permanent data loss is not the expected result from a temporary network loss. The likely impact is that some VMs become inaccessible until either the maintenance host returns or the isolated host reconnects. Reference topics: vSAN Maintenance Mode, Ensure Accessibility, Default Storage Policy, RAID-
1 FTT=1, Network Partition Handling.
16. Frage
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