DCE Extended Services currently
consist of the Distributed File Service (DFS) alone. The DFS is a DCE
application that implements a single logical filesystem that is available (through Directory Services)
throughout an entire cell and across cell boundaries. DFS supports replication of files for availability
and
fault-tolerance and log-based recovery from hardware failures.
The remaining components that appear
in Figure 2 as DCE Extended Services are vestiges of OSF’s
Distributed Management Environment (DME), which failed to obtain vendor buy-in and has ceased to exist
as an entity in its own right. These components are shown in dashed boxes because it is not clear at
this
time whether they will be incorporated into future releases of DCE. The Network Management Option would
provide a means for management applications to access management information using standard network
management protocols (CMIP and SNMP). The Event Service would provide a common way for system and
user applications to generate, forward, filter, and log events.
The Bibliography lists sources
of additional information about DCE.
1.Introduction
