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| Section | Objectives |
|---|---|
| Topic 1: Configuration and Management | - Information Lifecycle Management (ILM) policies - Identity federation and access control - Tenant and bucket management |
| Topic 2: StorageGRID Architecture and Concepts | - Data flow and object storage concepts - Grid architecture overview - Nodes and components |
| Topic 3: Monitoring and Troubleshooting | - Performance troubleshooting - System health monitoring - Log analysis and diagnostics |
| Topic 4: Installation and Deployment | - System requirements - Initial grid configuration |
| Topic 5: Security and Compliance | - Audit logging and compliance features - Encryption and key management |
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質問 # 40
You have a StorageGRID system that spans multiple sites. You are asked to create an S3 bucket for extremely important objects that require all sites to receive metadata immediately after any new write or change.
When creating this S3 bucket, which consistency level meets the requirement?
正解：B
解説：
The appropriate consistency level is strong-global because the requirement explicitly applies to clients and object metadata across multiple StorageGRID sites. NetApp defines strong-global as providing read-after- write consistency for all client requests across all sites. Therefore, after an object is created or its metadata is changed, subsequent requests from any site receive a consistent view of that change.
strong-site is insufficient because its consistency guarantee applies only to client requests within a single site.
A client accessing the bucket from another StorageGRID site could therefore fall outside the required site- wide consistency guarantee. read-after-new-write, which is the default and generally recommended setting, guarantees consistency for newly created objects but provides eventual consistency for object updates.
Because the scenario requires immediate consistency following both new writes and changes, it does not meet the stated requirement. available provides eventual consistency for both new objects and updates and prioritizes availability rather than cross-site consistency.
Thus, among the available options, strong-global is specifically designed for workloads requiring globally consistent object and metadata visibility across a multisite StorageGRID deployment.
Reference topics: S3 Buckets # Bucket Consistency # Strong-global # Strong-site # Read-after-new-write # Metadata Distribution Across Sites
質問 # 41
A StorageGRID system is composed of Linux-based nodes running on hosts in your data center. You want to decommission Host-A containing Storage Node Linux-Node-1, and you must migrate Linux-Node-1 to a new host, Host-B.
What is the correct sequence of steps to migrate Linux-Node-1 from Host-A to Host-B?
正解：B
解説：
NetApp defines a specific workflow for migrating a Linux-based StorageGRID node between hosts. The source node must first be shut down cleanly using storagegrid node stop. After the node has stopped, the administrator runs storagegrid node export on the source host. The export output identifies the /var/local storage volume and provides the corresponding import command to use on the target host.
On Host-B, the administrator runs storagegrid node import against the exported node storage. NetApp then requires the imported configuration to be checked with storagegrid node validate. After successful validation, the migrated node is started with storagegrid node start, and Grid Manager is used to confirm that the node returns to a green operational state with no alerts.
Therefore, C represents the required migration sequence. Although the option summarizes the final validation
/start phase, its stop # export # import # verify ordering matches NetApp's prescribed procedure.
Option A is incorrect because Grid Manager does not automatically migrate Linux containers. Option B reverses the export/import sequence. Option D incorrectly treats migration as a new StorageGRID installation and node reconfiguration.
Reference topics: StorageGRID Maintenance # Linux Host Migration # Node Stop # Node Export # Node Import # Validate # Start # Grid Manager Verification
質問 # 42
A customer wants to test their application against a StorageGRID system to verify its compatibility.
What is the minimum number and type of nodes required to deploy a healthy virtual StorageGRID environment for this test?
正解：D
解説：
A healthy StorageGRID deployment requires one primary Admin Node and at least three Storage Nodes at each site. NetApp StorageGRID 12.0 documentation states that every grid requires a primary Admin Node to provide core management and configuration services, while every site requires a minimum of three Storage Nodes. Therefore, the smallest healthy single-site virtual test environment contains four nodes: one Admin Node plus three Storage Nodes.
The three-Storage-Node minimum is important because Storage Nodes host core distributed services such as Cassandra, DDS, and ADC. In particular, the ADC service is hosted on at least three Storage Nodes at a site, supporting grid topology information, authentication, and service discovery.
Option A lacks the required primary Admin Node and therefore cannot constitute a complete manageable StorageGRID grid. Option D contains an Admin Node but only one Storage Node, which does not satisfy the three-node minimum. Option C would work, but the Gateway Node is optional because Admin Nodes can also provide S3 load-balancing functionality for a small compatibility-test deployment.
Therefore, B is the minimum healthy virtual configuration.
Reference topics: StorageGRID Architecture # Grid Node Types # Primary Admin Node # Minimum Storage Nodes per Site # Virtual Deployment Requirements
質問 # 43
Your customer is a service provider that wants to host static images for multiple customer websites in different domains, but from a single DNS endpoint. All traffic must be HTTPS encrypted to ensure security and validity of content.
What do you configure to prevent error messages?
正解：D
解説：
The correct configuration is Cross-Origin Resource Sharing (CORS). StorageGRID supports CORS specifically so that objects stored in an S3 bucket can be accessed by web applications originating from different domains. NetApp's documentation uses essentially this exact use case: an S3 bucket containing images can be configured with CORS so that those images can be displayed by a website hosted in another domain.
For a service provider hosting image objects centrally while multiple customer websites access those objects from separate domains, the browser treats the requests as cross-origin. A CORS configuration on the S3 bucket defines the permitted origins, HTTP methods such as GET, and allowed headers. The administrator can either authorize specific customer domains or, where appropriate, permit GET requests from multiple origins. HTTPS remains handled independently by the StorageGRID load balancer endpoint and its TLS certificate.
Option C is incorrect because the HTTPS certificate must match the StorageGRID endpoint domain names clients connect to, not every external website that merely references the images. Option A is unnecessary because one endpoint can service multiple domains, and Swift is unrelated.
Reference topics: Tenant Manager # S3 Buckets # Cross-Origin Resource Sharing (CORS) # Allowed Origins # Static Web Content # HTTPS S3 Access
質問 # 44
A StorageGRID site has virtual and physical Storage Nodes of several different sizes.
The metadata capacity is sized based on which node?
正解：A
解説：
StorageGRID distributes object metadata evenly across the Storage Nodes participating in metadata storage at a site. Consequently, when Storage Nodes have different metadata capacities, the smallest Storage Node becomes the limiting factor for the site's usable metadata capacity. NetApp explicitly states that when a site contains Storage Nodes of different sizes, the smallest node at that site determines the site's metadata capacity.
The underlying consideration is particularly tied to volume 0, because StorageGRID stores Cassandra object metadata on volume 0. NetApp recommends configuring comparable volume 0 sizes across Storage Nodes whenever possible. If different sizes are used, the node with the smallest volume 0 establishes the effective per-node metadata ceiling. Because metadata is evenly distributed, excess metadata space available on larger nodes cannot compensate for insufficient capacity on the smallest participating node.
Therefore, the largest, newest, or oldest Storage Node has no special role in determining metadata sizing.
Hardware generation or installation age is irrelevant to this calculation; usable metadata capacity is constrained by the node with the least available metadata capacity.
Reference topics: Grid Manager # Storage Settings # Metadata Reserved Space; Storage Nodes # Volume 0; Object Metadata Capacity and Cassandra Distribution
質問 # 45
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