Active IQ Digital Advisor is specifically designed for predictive analytics and ‘what-if’ modeling. It can analyze current workload performance data and simulate how it would behave on a different, target ONTAP system, helping to size and validate the new environment before migration.

The command `statistics performance show -vserver ` provides a summarized, real-time view of key performance metrics (like IOPS, throughput, latency) aggregated by object type (volume, LUN, protocol) within the specified SVM. This is the most direct way to identify the top consumers of resources from the SVM perspective.

In ONTAP, the primary method for reducing aggregate fragmentation non-disruptively is to add storage (disks) to the aggregate. This provides new, contiguous free space for WAFL to write data, allowing it to reorganize and reduce fragmentation over time through normal write operations. ONTAP does not have a traditional offline defragmentation command for aggregates.

The `volume encryption conversion start` command initiates an in-place, online conversion of an existing non-encrypted FlexVol to an encrypted volume using NetApp Volume Encryption (NVE). This process happens in the background while the volume remains serving data, making it the ideal solution for encrypting existing, live volumes.

A Snapshot provides a point-in-time, space-efficient copy of the volume’s data. FlexClone then creates a writable clone volume that references the Snapshot’s blocks. The clone is created almost instantly, consumes no additional space initially (only for new/changed blocks), and its creation has negligible performance impact on the source production volume.

For a disaster recovery destination volume, the best practice is to set the tiering policy to ‘none’. This forces all data replicated by SnapMirror to remain on the performance tier (e.g., SSDs) at the DR site. This ensures the volume is fully available and performant for immediate failover, without any need to recall data from a cloud tier during a recovery scenario.

When a LUN is created, specifying the correct host OS type (e.g., ‘windows’, ‘linux’, ‘vmware’) is crucial. This setting determines how ONTAP presents the LUN’s SCSI identifiers and manages certain behaviors. An incorrect OS type can prevent the host’s OS from properly recognizing and mounting the LUN, even if all networking and mapping configurations are correct.

The `vserver firewall policy show` command displays the firewall policies configured for an SVM. This is where you would check if a policy is blocking the specific NFS protocol (e.g., nfs, nfs3, nfs4) on the data LIF in question. Incorrect firewall rules are a common cause when ping works (ICMP is allowed) but service traffic does not.

The correct, nondisruptive procedure is to update one node at a time using the `system node update` command. This triggers an automatic, graceful storage failover (takeover) by the HA partner. Workloads continue running on the partner node during the update. After the first node reboots, it performs a giveback. The process is then repeated for the second node. This sequence ensures continuous data availability.

Active IQ Digital Advisor is specifically designed for predictive analytics and ‘what-if’ modeling. It can analyze current workload performance data and simulate how it would behave on a different, target ONTAP system, helping to size and validate the new environment before migration.0