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Chapter 12: Planning a migration from AF... > Migrating AFS data to NFSv4 servers - Pg. 276

12.8 Migrating AFS data to NFSv4 servers Each site must decide on an appropriate strategy for migration and ensure hardware availability before commencing data migration. The data in an AFS cell can be broadly classified into two types: User data This consists of home directories, owned by individual users, which are used for holding individual personal data. Typically, the owner has full control over their own directory tree. When required, access to this data can be given to others. The concept of groups and ACLs helps effectively share this data. One method for migrating this data involves the use of commands such as tar and cpio. Depending on the type of migration selected, administrators might move this data or allow each user to be responsible for migrating their own files. Common/shared data As the name suggests, this material is often accessed by multiple users or groups. Group owners are responsible for setting access controls on this data. Often, it is logically divided into directories based on project names, departments, or useful tools, binaries, or source code. Many sites run complex applications for creating and managing such data over AFS.