The Object server is a blob store. It's responsibility is to handle storage, retrieval and deletion of objects stored in the local storage. Objects are typically binary files stored in the filesystem with metadata contained as extended file attributes (xattr).
Note: xattr is supported in several filesystems such as ext3, ext4, XFS, Btrfs, JFS and ReiserFS in Linux. But it is known to work best under XFS, JFS, ReiserFS, Reiser4, and ZFS. XFS is considered to be the best option.
