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| Section | Weight | Objectives |
|---|---|---|
| Data Protection and Availability | 20% | - Replication and erasure coding
|
| Configuration and Management | 25% | - Grid management
|
| Installation and Deployment | 15% | - Deployment procedures
|
| StorageGRID Architecture and Components | 20% | - System architecture overview
|
| Monitoring, Troubleshooting and Maintenance | 20% | - Monitoring and alerting
|
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NEW QUESTION # 33
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?
Answer: C
Explanation:
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
NEW QUESTION # 34
You are setting up a StorageGRID environment that must maintain data for regulatory compliance.
Which two items are required? (Choose two.)
Answer: B,D
Explanation:
For regulatory retention in StorageGRID, the required mechanisms are S3 Object Lock and a compliant default ILM rule. StorageGRID implements write-once-read-many protection through S3 Object Lock.
NetApp states that the global S3 Object Lock setting must be enabled before tenants can create buckets with S3 Object Lock enabled. Once enabled globally, the setting cannot be disabled.
There is also a mandatory ILM dependency. NetApp explicitly requires the default rule in every active ILM policy to be compliant before global S3 Object Lock can be enabled. A compliant default rule must maintain at least two replicated copies or one erasure-coded copy on Storage Nodes, must begin protection at day 0 using Ingest time, cannot place the protected copies in a Cloud Storage Pool, and must include a placement extending forever.
Option A is incorrect because SnapLock is an ONTAP WORM technology and is not the StorageGRID compliance mechanism. Option B is also incorrect: StorageGRID regulatory retention does not require an administrator-configured "Compliance Clock." Object retention is enforced through S3 Object Lock retain- until dates, retention modes, legal holds, and compliant ILM placement.
Reference topics: S3 Object Lock # Regulatory Compliance # Compliant ILM Rules # Default ILM Rule # Retention and Legal Hold
NEW QUESTION # 35
During performance troubleshooting, you notice that the disk device sdc on Storage Node 3 is handling significantly more I/O operations than the other disks.
What is the reason for this behavior?
Answer: B
Explanation:
The increased I/O on sdc is expected when that device corresponds to storage volume 0 (/var/local/rangedb/0), because StorageGRID uses volume 0 for the Cassandra database that stores object metadata. NetApp documents that StorageGRID maintains object metadata independently from object data in Cassandra and reserves space specifically on volume 0 of every Storage Node for metadata storage and essential database operations.
Cassandra performs continuous metadata-related activity, including database reads and writes, compaction, indexing, consistency operations, and repair. Consequently, the disk containing volume 0 can exhibit noticeably higher I/O than the remaining object-storage volumes even when object data itself is reasonably balanced. NetApp diagnostic examples also show sdc associated with /var/local/rangedb/0, illustrating the relationship between this device and the StorageGRID metadata volume.
Option A does not explain persistent device-specific activity because object ingest is handled through StorageGRID services and ILM placement. Option B would indicate an object-placement issue rather than systematically higher I/O on volume 0. Option D is also incorrect because higher utilization is not necessarily caused by a larger number of stored object payloads.
Reference topics: Storage Nodes # Storage Volumes # Volume 0 # Cassandra Object Metadata # Disk I/O and Performance Monitoring
NEW QUESTION # 36
A customer has installed a hotfix on their StorageGRID system. After the update, an "ILM placement unachievable" alert is reported by the system.
What does the alert mean?
Answer: C
Explanation:
The ILM placement unachievable alert means that StorageGRID is unable to satisfy one or more placement instructions defined by an active ILM rule for certain objects. NetApp defines this alert as indicating that an ILM placement instruction cannot be achieved for certain objects, commonly because a required Storage Node or storage location is temporarily unavailable or because the ILM rule specifies a placement that the current topology cannot satisfy.
Therefore, D is the most accurate answer. The alert does not inherently mean that every S3 PUT operation failed. Whether a client PUT fails depends on the ILM rule's ingest behavior. With Strict ingest, StorageGRID must create all placements specified by the ILM rule immediately, so a placement failure can cause the client PUT to fail. With Balanced ingest, StorageGRID can temporarily use alternate protection and complete the required ILM placement later.
This distinction makes option C too absolute. Options A and B are unrelated to the meaning of the alert.
NetApp also notes that ILM placement unachievable can occur while Storage Nodes are stopped during an upgrade and can persist for up to one day afterward, which is directly relevant to this post-update scenario.
Reference topics: Grid Manager # Alerts # ILM Placement Unachievable # ILM Placement Instructions # Balanced and Strict Ingest Behavior # Upgrade/Hotfix Monitoring
NEW QUESTION # 37
Your team is troubleshooting intermittent connectivity issues during peak hours. You suspect that one or more StorageGRID nodes might be experiencing performance issues or downtime, and you want the load balancer to automatically skip these nodes.
Which feature in the third-party load balancer is designed to detect unresponsive nodes and prevent them from receiving client requests?
Answer: D
Explanation:
The correct feature is health checks. When a third-party load balancer is placed in front of StorageGRID nodes, it must continuously determine which backend nodes are healthy enough to accept S3 client traffic.
NetApp specifically recommends configuring a health-check mechanism so the load balancer can test each node and remove an unhealthy or unresponsive node from the active pool.
For StorageGRID, NetApp recommends using an HTTP OPTIONS request as a health probe. The load balancer sends the request directly to each Storage Node and expects an HTTP 200 response. If a node repeatedly fails to return the expected response, the third-party load balancer marks that node offline and stops directing new client connections to it. NetApp's guidance gives an example polling interval of once per second and marking a node offline after three failed checks.
Option A, GSLB, distributes traffic between geographically separate sites or data centers rather than determining the health of an individual backend node. Option C, SSL offloading, handles TLS processing.
Option D, session persistence, keeps a client's requests associated with a selected backend and does not detect failed nodes.
Therefore, B. health checks directly satisfies the requirement.
Reference topics: Third-Party Load Balancers # Backend Node Health Checks # HTTP OPTIONS Probe # Node Pool Availability # S3 Client Connectivity
NEW QUESTION # 38
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