Target
~~~~~~
[[target]]

Lustre servers manage permanent storage on behalf of the clients. That
storage is divided into logical resources for management data,
metadata (namespace and index data), and object storage. Each such
storage resource is called a target. Management data is stored on a
single management server (MGS) with a single target, also called the
MGS. Namespace and index data are maintained on one or more metadata
servers (MDSs), and each MDS may have several targets (MDTs). Object
storage is maintained on object servers (OSSs), and each OSS can have
several targets (OSTs), as well. Each target is based on an Object
Storage Device (OSD) which can be either an ldikfs-based file system
or a zfs-based file system.