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.