Online Foreign LUN import (FLI) involves many LUN migration jobs such as migration in progress, failed, paused, stopped, resume, modify throttle, state change, verify, and completed migrations. The FLI Status and Restart workflow enables you to effectively manage these LUN migration jobs.
You can use the FLI Setup and Import Job workflow to have all your setup ready for migration, and then use the FLI Status and Restart workflow to perform LUN migration and also keep track of all the jobs involved during migration.
Migration of block-level data is a common scenario when you plan for storage consolidation in your data center, purchase or lease new storage arrays, or perform technology refreshes. This requires data migration from one array to another, usually from one vendor array to another. FLI is a storage-array based migration method that enables a minimally disruptive transition for importing your data from third-party array LUNs to NetApp LUNs.
FLI can be done in two ways, offline FLI or online FLI. The offline FLI functionality supported in Data ONTAP 8.3 and later does not allow applications to access LUNs that are being migrated while FLI is active. The online FLI functionality supported in Data ONTAP 8.3.1 allows applications to continue to access data while the corresponding LUNs are being imported.
FLI for migrating data from third-party LUNs includes the following three initial phases:
The LUN import process occurs in five different phases. The following image illustrates the five phases of SAN data migration:
This workflow automates the verification phase of the data migration in which you can monitor the progress of the LUN migration.
You must ensure that certain requirements are met before executing the FLI Status and Restart workflow. You must be a cluster administrator for executing this workflow.
The FLI Status and Restart workflow enables you to effectively manage LUN migrations jobs using Online FLI functionality. Migration jobs are: migration in progress, failed, paused, stopped, and completed migrations.
The migration jobs are as follows:
You might want to temporarily pause the LUN import when the system load is high. After the system load become low, you can resume the LUN import.
If any failure occurs in the system during the LUN import, you can check which LUN import failed and take necessary actions.
You can initiate the data migration.
After the import is complete, you can stop the data migration.
You can keep track of all the completed LUN import operations.
You can keep track of all the verified LUN import operations.
You can keep track of any throttle changes made to the LUN.
You can keep track of LUN operational state changes.
The following illustration displays the tasks involved in executing the workflow:
The FLI Status and Restart Jobs workflow enables you to manage LUN migration jobs using the online FLI functionality.
You can access the configuration file from here.
You should have the following input parameters available for executing the workflow:
This specifies the limit at which the import is throttled.