Typical application scenarios for SmArtMigrAtion to achieve data migration are ( (multiple choice)

Huawei's SmartMigration is a host-transparent data migration feature for its storage systems. Its purpose is to move LUN data without service interruption. All listed options are typical application scenarios. It is used for technology refreshes and upgrades (A), to improve performance by moving data to faster media like SSDs (B), to enhance reliability by migrating data to LUNs with stronger data protection policies (C), and to reconfigure LUN properties like changing from thin to thick provisioning to meet new business demands (D).

N/A - All provided options are valid and common use cases for the SmartMigration feature.

1. Huawei. (2023). OceanStor Dorado 8.1.0 SmartMigration Feature Guide. [Product Documentation]. Section: "Introduction to SmartMigration," pages 1-2. This guide details the feature's purpose and lists scenarios including "service performance tuning," "service reliability adjustment," and "storage system replacement."

2. Huawei. (2023). OceanStor Dorado 8.1.0 Administrator Guide. [Product Documentation]. Chapter: "SmartMigration." This guide provides procedural steps for implementing migrations for various purposes, implicitly covering all the scenarios listed in the question.