Red Hat Enterprise Linux 5 provides storage administrators with a wealth of storage configuration possibilities, including Device-Mapper RAID, Multiple Devices (MD) RAID, Logical Volume Management (LVM), and of course, plain old block devices. In addition, the underlying block devices themselves can be directly attached ATA or parallel SCSI, multipathed SAN, or even iSCSI. In this presentation, these concepts are organized, showing how the layers of the kernel storage subsystem interact and even recurse, and methods that can be used to reconfigure storage at runtime will be demonstrated. Finally, the topic of block device names and filesystem labels and their persistence across reboots is touched upon.