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| Section | Weight | Objectives |
|---|---|---|
| Storage Optimization and Troubleshooting | 25% | - Perform health checks and implement remediation - Troubleshoot common storage issues in VMware Cloud Foundation - 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) |
| Integration and Automation | 20% | - Use APIs and command-line tools for storage management - Integrate storage components with other VMware Cloud Foundation services - Automate storage provisioning and management tasks |
| Storage Architecture and Design | 25% | - Plan for storage capacity, performance, and availability requirements - Integrate external storage arrays with VMware Cloud Foundation - Design vSAN storage solutions for VMware Cloud Foundation |
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25. Frage
An architect has been tasked with designing a vSAN OSA storage solution for a VMware Cloud Foundation (VCF) Private Cloud. The following requirements and constraints have been gathered from the client:
* 2 x 4 TB NVMe disks per host
* 6 hosts
* FTT=1/RAID-5 for all deployed Virtual Machines
* Expected Dedupe/Compression Ratio = 2 (100%)
* Reserve enough capacity to rebuild a host completely in case of a failure (Host Rebuild Reservation)
* Operational Reserve of 10%
* Expected Overhead for Filesystem, Object, etc. of 25%
What is the approximate expected usable capacity of the resulting array?
Antwort: D
Begründung:
The approximate expected usable capacity is 40 TB. The cluster contains six hosts, each with two 4 TB NVMe disks, giving 48 TB of raw capacity. Because the policy uses FTT=1 with RAID-5 erasure coding, vSAN provides better capacity efficiency than mirroring. RAID-5 with FTT=1 typically uses approximately 1.33x overhead, leaving roughly 75% of raw capacity before additional reserves and data-reduction assumptions. The design also requires Host Rebuild Reservation, which reserves enough capacity to rebuild data after a host failure, and an Operational Reserve of 10% to support internal operations such as resynchronization and policy changes. The expected filesystem and object overhead of 25% further reduces available capacity, while the deduplication/compression ratio of 2 increases the effective usable capacity. After accounting for protection overhead, capacity reserves, operational overhead, and the stated data-reduction assumption, the closest expected usable value from the available choices is 40 TB. Reference topics: vSAN Capacity Sizing, RAID-5 Erasure Coding, Deduplication and Compression, Host Rebuild Reserve, Operational Reserve.
26. Frage
A Network Administrator and Storage team are deploying a VCF Workload Domain with vSAN Data Protection configured for "Remote Replication" to a secondary cluster.
The security policy mandates Data-at-Rest Encryption for all production VMs.
```
# SPBM Policy: "Prod-Encrypted-DP"
[Capabilities]
Host.FailuresToTolerate: 1 (RAID-1)
Data.Encryption: Enabled (KMS-Prod)
DataProtection.RemoteTarget: "Sec-Site-Cluster"
DataProtection.RPO: 30 minutes
```
A VM is instantiated with this policy. A remote snapshot is successfully taken and replicated to the Sec- Site-Cluster.
How does the interaction between vSAN Native Encryption, SPBM, and Data Protection snapshots function to secure the data at the secondary site? (Select all that apply.)
Antwort: B,C,D
27. Frage
An agency is designing its secure private cloud on VMware Cloud Foundation with the following requirements:
* Strict data segregation between the management and workload domains.
* Company policy prevents using vSAN as a storage solution.
* Data encryption at rest is mandatory for both the management and workload domains.
* Data encryption in transit is mandatory for the workload domains.
* Data-at-rest encryption must be performed by the storage array and not rely on VMware native or vSAN- specific mechanisms.
* Allow for automated VM placement, operational integrity with VCF Operations, and assurance that file- based workloads scale efficiently.
Which storage architecture fulfills these technical and regulatory requirements?
Antwort: C
Begründung:
Option B satisfies every requirement because it separates management and workload storage onto dedicated Fibre Channel-backed VMFS datastores while relying on array-based encryption at rest.
This avoids VMware native encryption and vSAN-specific encryption mechanisms, matching the regulatory requirement. Fibre Channel is a supported non-vSAN storage architecture for VCF and provides enterprise block storage with multipathing, LUN masking, zoning, and consistent datastore presentation. SPBM storage policies allow storage placement and compliance to align with array and LUN characteristics, supporting automated placement and operational consistency. For scalable file- based workloads, NFS v4.1 is appropriate as supplemental file storage, and Kerberos privacy mode provides authentication, integrity, and encryption in transit for NFS traffic. Restricting cross-domain datastore access preserves strict management/workload segregation. Option A does not properly address file workload scaling or NFS encryption. Option C violates the requirement for array-based encryption by using VMware VM encryption. Option D violates segregation by sharing one NAS platform across domains and relies on application-level encryption instead of the mandated storage architecture. Reference topics: Fibre Channel Storage Model, SPBM, Array-Based Encryption, NFS v4.
1 Kerberos, Workload Domain Storage Segregation.
28. 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.
29. Frage
A Cloud Administrator is monitoring a 4-node vSAN OSA cluster using the vSAN Performance Service. The network team recently implemented a security policy that filters ICMP and specific UDP traffic between rack switches.
```
[vSAN Performance View]
Cluster Backend Performance (Last 1 hr)
Backend IOPS: 12,500
Backend Latency: 22ms (High)
Congestion (Network): 25
Network Diagnostics
Retransmission Rate: 1.5%
CMMDS Master Elections: 14
```
Based on the performance view, which conclusion about the impact of the network changes is most accurate? (Select all that apply.)
Antwort: A,C,E
30. Frage
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