Can I take your number? cefixime tablets RHEL 7 is also keeping abreast of new developments in file systems. For the first time, RHEL will use XFS as the default file system. First developed by SGI, XFS is a high-performance journaling file system designed for managing large sets of data and heavy parallel workloads. In RHEL 7, XFS will support up to 50TB of data, and can store blocks of data in sizes up to 1MB, which can help reduce fragmentation as well as time the server spends doing block allocation.