vSAN Storage Solutions Quiz
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Questions and Answers

What is one primary benefit of using vSAN Max for storage refreshes?

  • Decreases application licensing costs
  • Replaces all hardware components
  • Increases compute cluster size
  • Maintains storage independence from compute (correct)

    • VSAN Max requires a minimum of 64GB of memory per host for full functionality.

    False

    What is the primary purpose of deduplication and compression in vSAN?

    To optimize storage space utilization

    VSAN Max is particularly beneficial for storing large data sets for ___ models.

    <p>large language</p> Signup and view all the answers

    Match the following vSAN design considerations with their descriptions:

    <p>CPU = Add 10% overhead for vSAN efficiency Memory = Requires 32GB for full vSAN Boot Device = Must be UEFI firmware compliant Disk Controllers = Redundancy improves overall storage reliability</p> Signup and view all the answers

    Which of the following supports hybrid configurations?

    <p>vSAN OSA</p> Signup and view all the answers

    VSAN ESA can be deployed in both greenfield and brownfield environments.

    <p>False</p> Signup and view all the answers

    What is the maximum number of disks supported per vSAN OSA host?

    <p>40 disks</p> Signup and view all the answers

    VSAN ESA requires a minimum of ______ CPUs per host.

    <p>32</p> Signup and view all the answers

    Match the following vSAN features with their descriptions.

    <p>Disk Support = Hybrid and all-flash configurations Disk Maximums = No defined upper limit Compression Scope = Cluster-wide setting Encryption = One KEK per cluster and one DEK per disk</p> Signup and view all the answers

    What is a key difference in compression scope between vSAN OSA and ESA?

    <p>Cluster-wide setting for OSA and individual object configuration for ESA</p> Signup and view all the answers

    Deduplication is available for vSAN ESA.

    <p>False</p> Signup and view all the answers

    Which feature is enabled by default in vSAN ESA storage policies?

    <p>Compression</p> Signup and view all the answers

    Granular storage policies (per VMDK) are supported in vSAN ESA.

    <p>False</p> Signup and view all the answers

    What does FTT stand for in the context of vSAN ESA storage policies?

    <p>Failure to Tolerate</p> Signup and view all the answers

    The default vSAN ESA storage policies provide __________ when using Raid 6.

    <p>FTT=2</p> Signup and view all the answers

    Which statement about Auto-Policy Management in vSAN ESA is true?

    <p>It configures storage policies based on cluster size.</p> Signup and view all the answers

    The number of disk stripes per object is irrelevant for vSAN ESA.

    <p>True</p> Signup and view all the answers

    What happens when a new VM is created on the vSAN ESA datastore?

    <p>The datastore default policy is used.</p> Signup and view all the answers

    VSAN ESA supports __________ storage policies.

    <p>per-object</p> Signup and view all the answers

    Match the storage policy characteristics with their descriptions:

    <p>Compression enabled = Acts to save storage space Granular storage policies = Not supported in vSAN ESA Auto-Policy Management = Configures policies based on cluster size FTT in Raid 5 = Provides protection against one failure</p> Signup and view all the answers

    What is the default storage policy when enabling Auto-Policy Management on a cluster?

    <p>Cluster-Specific Default Storage Policy</p> Signup and view all the answers

    Cross vCenter Cross Cluster Capacity Sharing is supported in VCF 5.2.

    <p>False</p> Signup and view all the answers

    What is required to create additional clusters with vSAN ESA?

    <p>vSphere Lifecycle Manager to be enabled</p> Signup and view all the answers

    The vSAN datastore uses the new vSAN _____ storage type.

    <p>ESA</p> Signup and view all the answers

    Match the following features with their descriptions:

    <p>HCL JSON file = Used in air-gapped environments for manual upload vSAN Health Check Plugin = Verifies hardware against vSAN HCL Proxy Configuration = Useful for connecting to the Internet vSphere Lifecycle Manager = Required for vSAN ESA clusters</p> Signup and view all the answers

    Which of the following is NOT a requirement for vSAN ESA clusters?

    <p>Internet connectivity</p> Signup and view all the answers

    What is the main feature of deduplication in vSAN ESA clusters?

    <p>It is policy-based.</p> Signup and view all the answers

    Automatic verification of underlying hardware can only be done through manual checks.

    <p>False</p> Signup and view all the answers

    Removing a host from a vSAN ESA cluster will keep the storage policy compliant.

    <p>False</p> Signup and view all the answers

    What must customers running VMware Cloud Foundation 5.2 decide regarding cluster deployment?

    <p>They must decide between aggregated vSAN HCI clusters or disaggregated vSAN Max clusters.</p> Signup and view all the answers

    What does HCL stand for in the context of vSAN ESA?

    <p>Hardware Compatibility List</p> Signup and view all the answers

    To auto-claim disks, the _____ feature must be turned on.

    <p>HCL disk claim</p> Signup and view all the answers

    The vSAN ESA default storage policy is created based on the number of ______.

    <p>hosts</p> Signup and view all the answers

    Match the following storage options with their descriptions:

    <p>vSAN HCI = Aggregated storage for VMware Cloud Foundation vSAN Max = Disaggregated storage for VMware Cloud Foundation vSAN Max limitations = Cluster host count sizes and connection limits Health alerts = Generated for policy noncompliance</p> Signup and view all the answers

    Which of the following operations is supported with vSAN ESA?

    <p>Management and VI workload domain creation with vSAN ESA</p> Signup and view all the answers

    What is the maximum storage capacity per vSAN Max host?

    <p>360 TB</p> Signup and view all the answers

    Disaggregated vSAN Max deployment is supported in a stretched cluster topology.

    <p>False</p> Signup and view all the answers

    What happens if a user tries to change the deployment type of a cluster after creation?

    <p>The selection of vSAN HCI or vSAN Max cannot be retroactively changed.</p> Signup and view all the answers

    VSAN Max storage presentation is limited to within the same ______.

    <p>vCenter system</p> Signup and view all the answers

    Which of the following statements about the host decommission workflow in SDDC Manager is true?

    <p>It is the same as for non-ESA hosts.</p> Signup and view all the answers

    Which feature of vSAN allows categorization of storage based on desired levels of service?

    <p>Storage-based Policy Management</p> Signup and view all the answers

    Objects in vSAN can be treated differently according to policies applied to them.

    <p>True</p> Signup and view all the answers

    What is the minimum number of ESXi hosts required to ensure Failures to Tolerate (FTT) in a vSAN environment?

    <p>3</p> Signup and view all the answers

    A Flat.VMDK in a vSAN file is considered an __________ and is made up of different components.

    <p>object</p> Signup and view all the answers

    Match the failure tolerance methods with their descriptions:

    <p>RAID = A method that mirrors or stripes data across multiple disks. Erasure Coding = A technique that stores data fragments across multiple locations for redundancy. FTT = An indication of how many failures a system can tolerate. Redundancy = The ability to restore or recover data in case of hardware failure.</p> Signup and view all the answers

    What does a default Failures to Tolerate (FTT) policy typically guarantee in a vSAN configuration?

    <p>One failure to tolerate</p> Signup and view all the answers

    VSAN allows for different rules to be applied directly on Virtual Machines (VMs) to create policies.

    <p>True</p> Signup and view all the answers

    What happens to the vSAN ESA default storage policy when a host is removed from the cluster?

    <p>It becomes noncompliant.</p> Signup and view all the answers

    VSAN Max can be used in a stretched cluster topology with VMware Cloud Foundation 5.2.

    <p>False</p> Signup and view all the answers

    What is the range of storage capacity per vSAN Max host?

    <p>20 to 360 TB</p> Signup and view all the answers

    Removing a host from a vSAN ESA cluster can trigger __________ alerts in the vSAN Health UI.

    <p>health</p> Signup and view all the answers

    Match the deployment types with their descriptions:

    <p>Aggregated storage = Utilizes resources from all ESXi hosts in a cluster Disaggregated storage = Creates storage-only clusters Storage-only clusters = No virtual machines are present vSAN ESA = Uses policy-based deduplication and compression</p> Signup and view all the answers

    Which of the following configurations does vSAN OSA support?

    <p>Hybrid and all-flash configurations</p> Signup and view all the answers

    VSAN ESA can only be deployed in a brownfield environment.

    <p>False</p> Signup and view all the answers

    VSAN ESA requires a minimum of ______ GB of RAM.

    <p>512</p> Signup and view all the answers

    Match the following disk configurations with their characteristics:

    <p>vSAN OSA = Two-tier disk construct known as disk groups vSAN ESA = Single-tier structure called a storage pool</p> Signup and view all the answers

    Which statement describes how compression works in vSAN ESA?

    <p>Compression scope is at the individual object level.</p> Signup and view all the answers

    VSAN OSA supports deduplication capabilities.

    <p>True</p> Signup and view all the answers

    Name one key difference in encryption between vSAN OSA and vSAN ESA.

    <p>vSAN OSA has one DEK per disk, while vSAN ESA has one DEK per cluster.</p> Signup and view all the answers

    VSAN ESA does not support _____ and SATA devices.

    <p>SAS</p> Signup and view all the answers

    Which requirement is NOT needed for vSAN ESA deployment?

    <p>Minimum of 500 GB of RAM</p> Signup and view all the answers

    What must happen to a disk group before deduplication and compression can be applied?

    <p>Format the disk group</p> Signup and view all the answers

    VSAN supports in-place upgrades from Original Storage Architecture (OSA) to Express Storage Architecture (ESA).

    <p>False</p> Signup and view all the answers

    What is the minimum requirement for disk size reduction before vSAN stores compressed data?

    <p>2K</p> Signup and view all the answers

    VSAN ESA delivers up to _____ better performance with current NVMe technology.

    <p>four-times</p> Signup and view all the answers

    Match the following vSAN ESA characteristics with their descriptions:

    <p>High performance NVMe TLC SSD support = Supported storage devices Greenfield deployments only = Deployment types Management through vCenter = Operational management No in-place upgrades = Upgrade restrictions</p> Signup and view all the answers

    Which of the following is a characteristic of vSAN ESA?

    <p>Builds on existing vSAN technology</p> Signup and view all the answers

    What does vSAN stand for?

    <p>Virtual Storage Area Network</p> Signup and view all the answers

    In vSAN, deduplication is applied after compression.

    <p>False</p> Signup and view all the answers

    What is a requirement for vSAN ESA?

    <p>Supports only vSAN ReadyNode validated server configurations</p> Signup and view all the answers

    What does vSAN ESA improve in terms of disk usage?

    <p>Disks can be allocated to both cache and capacity.</p> Signup and view all the answers

    A single disk failure in vSAN ESA affects the entire storage pool.

    <p>False</p> Signup and view all the answers

    What type of devices does vSAN ESA support?

    <p>NVMe based flash devices</p> Signup and view all the answers

    The new storage architecture for vSAN 8 uses ______ to simplify the I/O process.

    <p>storage pools</p> Signup and view all the answers

    Match the following vSAN ESA attributes with their descriptions:

    <p>Single-tier architecture = No dual-tier I/O process Compression = Reduces network traffic Encryption = Secures data at ingest Log-Structured File System = Enhances performance through smaller writes aggregation</p> Signup and view all the answers

    Which of the following is a benefit of the vSAN Log-Structured File System?

    <p>Allows for high-performance snapshots</p> Signup and view all the answers

    Checksum calculations are only performed at the end of data processing in vSAN ESA.

    <p>False</p> Signup and view all the answers

    What is the effect of compressing data at ingest in vSAN ESA?

    <p>Reduces network traffic and CPU resources</p> Signup and view all the answers

    VSAN ESA allows for the reduction of I/O flow by eliminating the need for a ______ architecture.

    <p>two-tier</p> Signup and view all the answers

    What is a key feature of the vSAN ESA architecture?

    <p>Each disk functions as its own independent unit.</p> Signup and view all the answers

    What is the minimum number of ESXi hosts required for a Failures to Tolerate (FTT) of 2 when using Raid-1?

    <p>5</p> Signup and view all the answers

    In a vSAN environment, deduplication requires a hybrid architecture.

    <p>False</p> Signup and view all the answers

    What does FTT stand for in the context of vSAN?

    <p>Failures to Tolerate</p> Signup and view all the answers

    To achieve __________ with Raid-5, a minimum of 4 ESXi hosts is required.

    <p>Fault Tolerance</p> Signup and view all the answers

    Match the following storage types with their Failures to Tolerate (FTT) requirements:

    <p>Raid-1 = 3 hosts minimum for FTT of 1 Raid-5 = 4 hosts minimum for FTT of 1 Raid-6 = 6 hosts minimum for FTT of 2 Raid-0 = 1 host minimum for FTT of 0</p> Signup and view all the answers

    How much storage capacity is consumed for a FTT of 1 when using Raid-1?

    <p>200 GB</p> Signup and view all the answers

    Redundant copies of a block are deduplicated across different disk groups.

    <p>False</p> Signup and view all the answers

    What is the maximum allowable round-trip time (RTT) between availability zones for networking requirements?

    <p>5 ms</p> Signup and view all the answers

    VSphere vMotion VMkernel ports must reside in the same layer 2 domain for proper configuration.

    <p>False</p> Signup and view all the answers

    What is required for the Host Overlay Transport in each availability zone?

    <p>Enough IP addresses must be available.</p> Signup and view all the answers

    The vSphere vMotion, vSAN, host overlay, and management networks must be able to _____ between availability zones if they are not stretched.

    <p>route</p> Signup and view all the answers

    Match the components with their respective roles in network configuration:

    <p>vSphere vMotion = Enables migration of VMs without downtime vSAN = Provides shared storage across hosts Host Overlay = Facilitates communication between hosts in different zones Management Network = Supports access and management of workload domains</p> Signup and view all the answers

    What feature does vSAN ESA use to improve data management?

    <p>Single-tier architecture</p> Signup and view all the answers

    In vSAN ESA, a failure of a cache disk can bring down the entire storage pool.

    <p>False</p> Signup and view all the answers

    VSAN ESA compresses data once at ______ to reduce network traffic.

    <p>ingest</p> Signup and view all the answers

    Match the following features of vSAN ESA with their descriptions:

    <p>Compresses data = Reduces network traffic Encrypts data = Enhances security Checksums data = Verifies integrity Log-Structured File System = Reduces I/O amplification</p> Signup and view all the answers

    What is a primary benefit of using storage pools in vSAN ESA?

    <p>They enhance read and write performance by simplifying I/O.</p> Signup and view all the answers

    The Log-Structured File System (LFS) is compatible only with certain types of devices.

    <p>False</p> Signup and view all the answers

    What happens to small incoming I/O in the Log-Structured File System?

    <p>They are ingested into an in-memory stripe buffer.</p> Signup and view all the answers

    With vSAN ESA, the maximum number of disks is defined by the number of ______ in a host.

    <p>disk slots</p> Signup and view all the answers

    What is the default storage policy when Auto-Policy Management is enabled on a cluster?

    <p>Cluster-Specific Default Storage Policy</p> Signup and view all the answers

    Cross vCenter Cross Cluster Capacity Sharing is supported in VMware Cloud Foundation 5.2.

    <p>False</p> Signup and view all the answers

    What is a primary benefit of using vSAN Max for application and hardware cost optimization?

    <p>Minimizing application licensing costs by keeping compute clusters small</p> Signup and view all the answers

    What must be enabled to create additional clusters with vSAN ESA?

    <p>vSphere Lifecycle Manager</p> Signup and view all the answers

    VSAN Max does not support storing large datasets for Private AI.

    <p>False</p> Signup and view all the answers

    What does vSAN Max provide for hardware asset longevity?

    <p>It allows you to maintain existing investments by integrating with workload domains.</p> Signup and view all the answers

    To auto-claim disks in vSAN ESA, the ______ feature must be turned on.

    <p>Hardware Compatibility List (HCL)</p> Signup and view all the answers

    Match the vSAN features with their descriptions:

    <p>Managed Domain = Hosts running in an isolated network Proxy Server = Connects to the internet for updates Health Check Plugin = Verifies hardware compatibility vSAN ESA Storage Type = New storage option for ESA clusters</p> Signup and view all the answers

    Full vSAN requires ____________ per host.

    <p>32GB of memory</p> Signup and view all the answers

    Match the storage technology with its characteristic:

    <p>NVMe cache/SAS = High performance and low latency SAS Cache with SATA = Cost-effective hybrid solution All-flash = Predictable and responsive performance All SATA = Lower performance compared to all-flash</p> Signup and view all the answers

    Which of the following statements is true regarding vSAN ESA clusters?

    <p>You can create vSAN ESA clusters using the UI or API.</p> Signup and view all the answers

    The vSAN Health Check Plugin can only verify hardware manually.

    <p>False</p> Signup and view all the answers

    Which of the following statements best describes the management experience of vSAN Max?

    <p>vSAN Max and vSAN HCI provide a consistent management experience.</p> Signup and view all the answers

    What type of boot device is recommended for maximizing space available for ESX-OS Data?

    <p>128-GB Boot Device</p> Signup and view all the answers

    The new vSAN ESA storage type allows for improved _____ for virtual machines.

    <p>management of storage policies</p> Signup and view all the answers

    Deduplication and compression in vSAN are applied at the disk group level.

    <p>True</p> Signup and view all the answers

    To optimize performance, vSAN requires a minimum of ___________ CPUs per host.

    <p>2</p> Signup and view all the answers

    Which operation is not supported in vSAN ESA?

    <p>Cross vCenter Cross Cluster Capacity Sharing</p> Signup and view all the answers

    What is an essential consideration for storage controllers in vSAN configurations?

    <p>Multiple storage controllers improve performance and redundancy.</p> Signup and view all the answers

    Which of the following features does vSAN ESA NOT support?

    <p>Hybrid storage configurations</p> Signup and view all the answers

    A single point of failure in a vSAN ESA storage pool can bring down the entire pool.

    <p>False</p> Signup and view all the answers

    What is one advantage of the Log-Structured File System (LFS) introduced in vSAN ESA?

    <p>It reduces I/O amplifications.</p> Signup and view all the answers

    VSAN ESA only supports ______ based flash devices.

    <p>NVMe</p> Signup and view all the answers

    Match the vSAN ESA features with their corresponding descriptions:

    <p>More efficient use of disks = Disks can serve both reads and writes Better resiliency = A failure of a cache disk does not impact other disks Improved I/O flow = Data does not need to land on cache before being destaged</p> Signup and view all the answers

    Which of the following benefits does vSAN ESA offer regarding data handling?

    <p>Data compression and encryption at ingest</p> Signup and view all the answers

    How does vSAN ESA handle I/O flow differently compared to traditional architectures?

    <p>It eliminates the two-tier architecture, reducing I/O flow.</p> Signup and view all the answers

    What is the minimum number of ESXi hosts required for a management domain in a stretched cluster?

    <p>4</p> Signup and view all the answers

    A stretched cluster can tolerate the failure of an entire availability zone.

    <p>True</p> Signup and view all the answers

    What does RTO stand for in the context of availability and maintenance?

    <p>Recovery Time Objective</p> Signup and view all the answers

    In a stretched cluster, each availability zone must contain the same number of __________.

    <p>hosts</p> Signup and view all the answers

    Match the following stretched cluster use cases with their descriptions:

    <p>Planned Maintenance = Allows service without downtime Auto initiation = Restarts VMs automatically Prevent production outages = Addresses impending service failures Low RTO = Focuses on application health after recovery</p> Signup and view all the answers

    What role does the witness site play in a stretched cluster?

    <p>It maintains witness components for fault domains.</p> Signup and view all the answers

    The management cluster must be stretched before any virtual infrastructure (VI) workload clusters are stretched.

    <p>True</p> Signup and view all the answers

    What is the purpose of configuring fault domains in a stretched cluster?

    <p>To spread redundancy components across availability zones.</p> Signup and view all the answers

    A stretched cluster consists of __________ active availability zones and one witness site.

    <p>two</p> Signup and view all the answers

    Which of the following is a reason for using a stretched cluster?

    <p>To prevent production outages.</p> Signup and view all the answers

    What is the maximum round-trip time (RTT) requirement between availability zones and the witness host with 11 or more hosts in an availability zone?

    <p>Less than or equal to 100 ms</p> Signup and view all the answers

    The vSAN Witness host must be managed by a different vCenter instance than the vSAN cluster.

    <p>False</p> Signup and view all the answers

    What must be done before stretching the cluster into the second availability zone?

    <p>Commission hosts in the 2nd AZ.</p> Signup and view all the answers

    The NSX Edge Uplink and NSX Edge Overlay Transport VLANs must be stretched (L2) across __________.

    <p>availability zones</p> Signup and view all the answers

    Match the following components with their requirements:

    <p>vSAN network = Must have routing to the witness site RTT = Must be less than or equal to 200 ms AZ2 network pool = Must be created before stretching the cluster vCenter instance = Must manage both vSAN cluster and witness host</p> Signup and view all the answers

    To use the auto-claim disks feature in vSAN ESA, the _____ feature must be turned on.

    <p>HCL disk claim</p> Signup and view all the answers

    Match the following vSAN ESA capabilities with their features:

    <p>HCL disk claim = Auto-claims disks based on compatibility Cross Cluster Capacity Sharing = Shares capacity across clusters vSphere Lifecycle Manager = Manages ESXi host lifecycle Health Check Plugin = Verifies hardware against HCL</p> Signup and view all the answers

    The vSAN ESA default storage policy changes when a new VM is created.

    <p>True</p> Signup and view all the answers

    What happens to the default storage policy when enabling Auto-Policy Management on a cluster?

    <p>It changes from vSAN Default Storage Policy to a cluster-specific default storage policy.</p> Signup and view all the answers

    What storage type must customers choose during cluster creation under VMware Cloud Foundation 5.2?

    <p>Either aggregated vSAN HCI or disaggregated vSAN Max</p> Signup and view all the answers

    Removing a host from a vSAN ESA cluster guarantees policy compliance.

    <p>False</p> Signup and view all the answers

    When using VMware Cloud Foundation, a disaggregated vSAN Max deployment is not supported in a __________ cluster topology.

    <p>stretched</p> Signup and view all the answers

    Match the following vSAN features with their functions:

    <p>vSAN HCI = Aggregated storage option vSAN Max = Disaggregated storage option vSAN ESA = Policy-based deduplication and compression SDDC Manager = Host decommission workflow</p> Signup and view all the answers

    What happens when a user tries to change the deployment type of a cluster after its creation?

    <p>The setting cannot be retroactively changed</p> Signup and view all the answers

    Deduplication and compression in vSAN ESA are policy-based and cluster wide.

    <p>False</p> Signup and view all the answers

    What is the main limitation of vSAN Max storage in a VMware Cloud Foundation environment?

    <p>It is not supported in a stretched cluster topology.</p> Signup and view all the answers

    What is a key feature of vSAN Max under VMware Cloud Foundation 5.2?

    <p>It creates storage-only ESXi hosts for vSAN clusters</p> Signup and view all the answers

    What advantage does vSAN ESA provide in terms of disk usage?

    <p>Disks can serve both reads and writes</p> Signup and view all the answers

    In vSAN ESA, a failure of a cache disk impacts other disks in the storage pool.

    <p>False</p> Signup and view all the answers

    What is the maximum type of disk supported in vSAN ESA storage pools?

    <p>NVMe</p> Signup and view all the answers

    The vSAN ESA architecture utilizes a __________ filesystem to manage write processes efficiently.

    <p>Log-Structured</p> Signup and view all the answers

    Which operation does vSAN ESA NOT perform during data processing?

    <p>Creating multiple copies of data</p> Signup and view all the answers

    VSAN ESA storage pools have a two-tier architecture for disk management.

    <p>False</p> Signup and view all the answers

    What is a benefit of normalizing storage management with vSAN Max?

    <p>Consistent management experience</p> Signup and view all the answers

    VSAN Max can extend the life of existing hardware assets.

    <p>True</p> Signup and view all the answers

    What type of environments is vSAN Max particularly beneficial for?

    <p>Cloud native environments</p> Signup and view all the answers

    To use vSAN for full functionality, a minimum of _______ GB of memory is required per host.

    <p>32</p> Signup and view all the answers

    Match the vSAN features with their respective descriptions:

    <p>Deduplication = Reduces storage usage by eliminating duplicate data Compression = Reduces the size of data by packing it more tightly Storage Policy Based Management = Enables customization according to service levels Fault Tolerance = Provides data protection against hardware failures</p> Signup and view all the answers

    Which component is NOT required for a vSAN host's boot device?

    <p>NVMe Controller</p> Signup and view all the answers

    VSAN Max storage presentation is not limited to within the same network.

    <p>False</p> Signup and view all the answers

    What needs to be added to account for virtual storage in vSAN?

    <p>10% CPU Overhead</p> Signup and view all the answers

    VSAN allows organizations to optimize __________ costs by keeping compute clusters small.

    <p>application licensing</p> Signup and view all the answers

    The vSphere vMotion VMkernel ports must always use the default TCP/IP stack instance for routing traffic.

    <p>False</p> Signup and view all the answers

    What must be ensured regarding the gateway for vSphere vMotion in the network pool configuration?

    <p>That it is reachable and can route traffic between availability zones.</p> Signup and view all the answers

    The vSphere vMotion, vSAN, and host overlay networks must route between availability zones if they are not _____.

    <p>stretched</p> Signup and view all the answers

    What is the metadata overhead percentage calculated for vSAN?

    <p>5 percent</p> Signup and view all the answers

    Match the following networks with their routing requirements:

    <p>vSphere vMotion = Must configure gateways if not in the same layer 2 domain vSAN = Typical VLAN differences between availability zones Host Overlay = May require stretching across zones Management Domain = Must be protected for workload access</p> Signup and view all the answers

    VSAN requires a maximum of 255 GB for VM Home Namespace.

    <p>True</p> Signup and view all the answers

    What is the minimum number of ESXi hosts required in a default management domain for an availability zone?

    <p>4</p> Signup and view all the answers

    The effective capacity is calculated for RAID 5 with FTT=____.

    <p>1</p> Signup and view all the answers

    Match the following vSAN overhead components with their percentages:

    <p>Metadata Overhead = 5 percent Slack Space = 25 percent Formatting Overhead = 1 percent Deduplication Overhead = Variable</p> Signup and view all the answers

    What must happen to the management cluster before stretching a VI workload cluster?

    <p>The management cluster must be stretched.</p> Signup and view all the answers

    Which storage I/O controller type is preferred to eliminate overhead?

    <p>Pass-through</p> Signup and view all the answers

    A witness site in a stretched cluster contains a single host that maintains __________ for objects that need them.

    <p>witness components</p> Signup and view all the answers

    Entering Maintenance Mode does not count as a failure in vSAN.

    <p>False</p> Signup and view all the answers

    How many hosts are required in a VI workload domain?

    <p>3</p> Signup and view all the answers

    What is the maximum number of availability zones in a stretched vSAN cluster?

    <p>Two</p> Signup and view all the answers

    VSAN File Services encompass objects that contain ______ and file shares.

    <p>SYS shares</p> Signup and view all the answers

    Every availability zone in a stretched cluster can have a different number of hosts.

    <p>False</p> Signup and view all the answers

    What is a characteristic of each availability zone in a stretched cluster?

    <p>Each availability zone is configured as a fault domain.</p> Signup and view all the answers

    What is the impact of using FTT=1 in a production environment?

    <p>Full data migration may be required</p> Signup and view all the answers

    The __________ allows for preventing production outages before impending service issues.

    <p>stretched cluster</p> Signup and view all the answers

    What is the primary role of the witness site?

    <p>To maintain witness components</p> Signup and view all the answers

    What must be configured to route vSphere vMotion networks between availability zones if they are not stretched?

    <p>A gateway for the VMkernel ports</p> Signup and view all the answers

    The round-trip time (RTT) requirement between availability zones is less than or equal to 10 ms.

    <p>False</p> Signup and view all the answers

    What is the primary purpose of ensuring that a gateway for vSphere vMotion is reachable?

    <p>To route traffic between the availability zones.</p> Signup and view all the answers

    In a campus area network, the vSphere vMotion, vSAN, and host overlay networks must route between availability zones if they are not __________.

    <p>stretched</p> Signup and view all the answers

    Match the following networking requirements with their descriptions:

    <p>Round-trip time (RTT) = Must be less than or equal to 5 ms IP addresses = Must be enough in the pool configured for Host Overlay Transport Gateway = Must be reachable and route traffic between availability zones vSphere vMotion = Requires proper VMkernel port configuration</p> Signup and view all the answers

    What is the primary purpose of storage policies in vSAN?

    <p>To categorize storage based on desired levels of service</p> Signup and view all the answers

    A Flat.VMDK in a vSAN file is considered an object made up of components.

    <p>True</p> Signup and view all the answers

    To ensure redundancy, a Flat.VMDK needs to be placed on ___ ESXi hosts.

    <p>3</p> Signup and view all the answers

    Match Failures to Tolerate methods (FTMs) with their descriptions:

    <p>Raid-1 = Creates mirrored copies of data Erasure coding = Improves space savings while maintaining data integrity Simple replication = Exact duplicate of the original storage Data striping = Distributes data across multiple disks for performance</p> Signup and view all the answers

    Which of the following goals is NOT achieved through storage policies in vSAN?

    <p>Guarantee maximum sales growth</p> Signup and view all the answers

    The default policy in vSAN guarantees one failure to tolerate.

    <p>True</p> Signup and view all the answers

    Which of the following features distinguishes vSAN ESA from vSAN OSA?

    <p>Single-tier structure called a storage pool</p> Signup and view all the answers

    VSAN ESA can utilize SAS and SATA devices.

    <p>False</p> Signup and view all the answers

    Deduplication is _________ on vSAN ESA.

    <p>NOT available</p> Signup and view all the answers

    Match the following vSAN ESA requirements with their descriptions:

    <p>Minimum CPUs = 32 CPUs Minimum RAM = 512 GB NIC for vSAN traffic = 25-Gbps or faster Minimum NVMe SSDs = Four NVMe-based SSDs per host</p> Signup and view all the answers

    Which compression scope is applied in vSAN OSA?

    <p>Cluster-wide setting</p> Signup and view all the answers

    The storage configuration type is the same for both vSAN OSA and vSAN ESA.

    <p>False</p> Signup and view all the answers

    What is the encryption setup for vSAN ESA?

    <p>One Key Encryption Key (KEK) per cluster and one Disk Encryption Key (DEK) per cluster</p> Signup and view all the answers

    VSAN ESA requires disks to be at least _______ in size.

    <p>1.6 TB</p> Signup and view all the answers

    What is a key feature of vSAN ESA storage pools?

    <p>Features a single-tier architecture</p> Signup and view all the answers

    In vSAN ESA, a single disk failure can bring down the entire storage pool.

    <p>False</p> Signup and view all the answers

    What type of devices does vSAN ESA exclusively support?

    <p>NVMe-based flash devices</p> Signup and view all the answers

    The vSAN ESA architecture allows for _____ at data ingest to enhance performance.

    <p>compression</p> Signup and view all the answers

    Match the following vSAN ESA components with their primary functions:

    <p>Ingest Buffer = Packages smaller writes into larger I/O blocks Encryption = Protects data from unauthorized access Checksum = Ensures data integrity Log-Structured File System = Reduces I/O amplifications</p> Signup and view all the answers

    Which process is NOT a part of the new I/O engine in vSAN ESA?

    <p>Compacts data after it is written</p> Signup and view all the answers

    The vSAN Log-Structured File System helps in reducing I/O overhead.

    <p>True</p> Signup and view all the answers

    What unique advantage do storage pools provide in vSAN ESA?

    <p>Independent storage device management</p> Signup and view all the answers

    In vSAN ESA, data is prepared for writing to the performance leg after being processed in the _____ buffer.

    <p>in-memory stripe</p> Signup and view all the answers

    What does vSAN ESA do to performance when ingesting data?

    <p>Packages small I/O into larger blocks</p> Signup and view all the answers

    What is required for a stretched cluster to function properly?

    <p>A minimum of four ESXi hosts in the management domain</p> Signup and view all the answers

    Each availability zone in a stretched cluster can fail without affecting the entire system.

    <p>True</p> Signup and view all the answers

    What is the purpose of the witness site in a stretched cluster?

    <p>To maintain witness components for objects that need them.</p> Signup and view all the answers

    A stretched cluster is configured with two active availability zones and a __________ site.

    <p>witness</p> Signup and view all the answers

    When is a stretched cluster particularly beneficial?

    <p>For preventing production outages due to service outages</p> Signup and view all the answers

    The minimum number of hosts for a workload domain in a stretched cluster is four.

    <p>False</p> Signup and view all the answers

    What do redundancy components do in a fault domain?

    <p>They spread across availability zones and provide resilience.</p> Signup and view all the answers

    In stretched clusters, a low __________ time objective (RTO) is desirable for unplanned failures.

    <p>recovery</p> Signup and view all the answers

    Which of the following is NOT a use case for a stretched cluster?

    <p>Creating a single-host environment</p> Signup and view all the answers

    Study Notes

    VSAN Policy Driven Storage System

    • With SPBM (Storage-based policy management), VCF assets use storage that guarantees a specified level of capacity, performance, availability, and redundancy.
    • Storage policies categorize storage for service levels, optimize VM disk configurations, and protect data through object-based fault tolerance.
    • SPBMs are sets of rules.

    Traditional VM Storage

    • VMDK files point to flat.vmdk files on storage arrays. Administrators must configure LUNs based on criteria to access them.
    • Physical disk details (how they're built, disk count, mirroring) are often unknown to users.
    • Storage admin interaction is necessary to define LUNs for optimal storage array configuration. This involves knowledge of capacity, performance, and redundancy requirements to ensure appropriate VMs and applications can run.

    Policy Driven Object-Based Storage

    • VSAN policies strategically place data objects across datastores to protect components like NSX, SDDC Manager, workload VMs, and vSAN data.
    • Storage policies apply to VM home namespaces, VMDK objects, thin-provisioned VM swap objects, VM snapshots, VM memory objects, and vSAN performance and file system data objects.
    • Objects like Flat.VMDK consist of components requiring redundancy and placement on multiple ESXi hosts (e.g., RAID-1 for mirroring).

    Failures to Tolerate (FTT)

    • By default, VMware Cloud Foundation protects against one failure.
    • Changing the default storage policy involves modifying the FTT value, ranging from 0 to 2.
    • Higher FTT values (e.g., 3) necessitate additional ESXi hosts.
    • SDDC Manager automatically configures RAID 1 (mirroring) for modifications.
    • Policy changes across many objects can take time, so it's often recommended to apply changes in stages.

    Comparing RAID 1 Mirroring and RAID 5/6 Erasure Coding

    • Erasure coding offers significant capacity savings but adds overhead in IOPS and network bandwidth compared to mirroring.
    • Different FTT values affect minimum host requirements and total capacity.

    vSAN Storage Policy Space Consumption Comparison

    • RAID-0, RAID-1, and RAID-5 demonstrate different storage consumption based on hosts and FTT.
    • Choosing the appropriate RAID level influences space requirements, flexibility, and potential for capacity savings.

    vSAN Storage Policy Space Consumption Comparison

    • Comparison to different configurations for use with 100GB Virtual Disks.
    • Data capacity required depends on the chosen policy, number of hosts and the desired failure tolerance values.

    vSAN Storage Policy Features

    • For ESA (Express Storage architecture) compression is on by default, disk stripe count per object, flash read cache reservation and granular storage policies are not relevant.
    • RAID 5 storage policies have a failure tolerance of 1
    • Storage policies are applied to objects like VMDKs.

    VSAN (ESA) Express Storage Architecture

    • Offers use of current and future hardware.
    • Suitable choice for high-performing data centers.
    • Enables the use of NVMe drives for maximum storage efficiency.
    • Supports all-flash configurations and has different requirements than older vSAN architectures.
    • Only high-performance NVMe TLC SSD devices are supported.
    • No in-place upgrades are supported.

    vSAN ESA Disk Configuration

    • Unlike OSA, ESA vSAN uses storage pools instead of disk groups.
    • This removes the cache tier and improves resiliency by distributing components across the cluster.

    vSAN ESA New I/O Engine

    • The ESA I/O engine uses highly parallel and efficient processing.
    • Compresses data for reduced network and CPU resources.
    • Encrypts data for reduced CPU usage.
    • Reuses already calculated CRC checksums for improved efficiency.

    VSAN Log Structured File System (LFS)

    • The LFS improves performance for write activity and snapshots by streamlining the I/O process.
    • It performs full-stripe writes in parallel.
    • The LFS also simplifies cluster operation by optimizing storage operations, thereby reducing CPU overhead and boosting performance.

    Monitoring Compliance

    • Information can be found on the VMs and storage policy tabs.

    Comparing Configurations

    • vSAN ESA provides better performance and efficiency compared to vSAN OSA for most use cases.
    • Differences in disk support, storage configuration, disk maximums, and compression mechanisms are noted.

    vSAN Max Support

    • Offers deployment of vSAN Max as principal storage in Cloud Foundation 5.2 and VSAN 8 U3.
    • Allows customers to use vSAN Max with aggregated VSAN HCI clusters or disaggregated vSAN Max clusters.
    • Enables flexibility with shared storage and deployment options.

    vSAN Max Limitations

    • Stretched cluster deployments are not supported for disaggregated vSAN Max setups within a stretched cluster topology.
    • Host counts, and connection limitations apply.
    • Configuration of vSAN Max storage is limited within the same vCenter system.
    • Presentation of vSAN storage is usually limited within the same vCenter system.

    vSAN Design Considerations, Performance and Sizing, and Overhead

    • Design considerations include CPU overhead, memory requirements, disk groups, and storage policies.
    • Choosing the correct hardware, and settings can prevent performance degradation.

    vSAN Host Hardware

    • Recommendation for highest queue depth I/O controllers for optimal performance.
    • RAID-0 is not recommended for VSAN disks.

    vSAN stretched Clusters and Witness Host

    • Requires a third witness site for redundancy.
    • Witness site must have low latency round-trip time to all availability zones(less than 200ms preferred).
    • For 11 or more hosts, the RTT needs to be less than 100ms.
    • The witness must be in a different availability zone.

    vSAN API Operations

    A detailed overview of the required APIs to manage vSAN stretch, along with example commands and JSON file structures to implement and validate the process.

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    Related Documents

    vSAN Storage Notes (PDF)

    Description

    Test your knowledge of vSAN Max, ESA, and OSA in this quiz. Explore key features, design considerations, and the benefits of using deduplication and compression. Perfect for those looking to deepen their understanding of virtual storage solutions.

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