Abstract: A first node of a plurality of nodes is determined based on a node UID that is included in a physical extent (PE) universally unique identifier (UUID). Each of the plurality of nodes includes one or more groups of arrays. A local disk manager (LDM) that is associated with the first node is identified based on an LDM UID that is included in the PE UUID. The LDM manages a physical disk that includes a plurality of physical extents. A disk object is obtained based on a disk UID that is included in the PE UUID. The disk object is used to access a physical extent (PE) of the physical disk, using a PE offset that is included in the PE UUID. Other embodiments are described and claimed.

Abstract: A storage node can include one or more processors and one or more storage disks, where the one or more storage disks include one or more local physical extents (PEs) that are local to the storage node. The storage node can include a protection pool driver executed by the one or more processors to run in a kernel space of the storage node, where the protection pool driver includes a local disk manager (LDM) and an array group module (AGRP). The LDM can be configured to manage the one or more local PEs at the one or more storage disks. The AGRP can include a number of storage arrays, where each of the storage arrays includes one or more virtual disks, where each of the one or more virtual disks is associated to at least a local PE or an external PE external to the storage node.

Abstract: A redundant array of independent disks (raid) array can include one or more virtual disks representing a raid configuration of the raid array. Each of the one or more virtual disks includes a number of physical extents (PEs), where a first PE and a second PE of the PEs have a same size. The first PE is located at a first storage disk of a first storage node of a cluster and the second PE is located at a second storage disk of a second storage node of the cluster.