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RAID-5 volume
A fault-tolerant volume with data and parity striped intermittently across three or more physical disks. Parity is a calculated value that is used to reconstruct data after a failure. If a portion of a physical disk fails, Windows recreates the data that was on the failed portion from the remaining data and parity. You can create RAID-5 volumes only on dynamic disks on computers running the Windows 2000 Server or Windows Server 2003 families of operating systems. You cannot mirror or extend RAID-5 volumes. In Windows NT 4.0, a RAID-5 volume was known as a striped set with parity.
See also dynamic disk.See also dynamic volume.See also fault tolerance.
Redundant Array of Independent Disks (RAID)
A method used to standardize and categorize fault-tolerant disk systems. RAID levels provide various mixes of performance, reliability, and cost. Some servers provide three of the RAID levels: Level 0 (striping), Level 1 (mirroring), and Level 5 (RAID-5).See also fault tolerance.See also RAID-5 volume.
reparse points
NTFS file system objects that have a definable attribute containing user-controlled data and that are used to extend functionality in the input/output (I/O) subsystem.See also NTFS file system.
replica set
One or more shared folders that participates in replication.
replication topology
In Active Directory replication, the set of physical connections that domain controllers use to replicate directory updates among domain controllers within sites and between sites.In the File Replication service (FRS), the interconnections between replica set members. These interconnections determine the path that data takes as it replicates to all replica set members.See also Distributed File System (DFS).See also domain controller.See also File Replication service (FRS).See also replica set.
resource
Generally, any part of a computer system or network, such as a disk drive, printer, or memory, that can be allotted to a running program or a process.For Device Manager, any of four system components that control how the devices on a computer work. These four system resources are interrupt request (IRQ) lines, direct memory access (DMA) channels, input/output (I/O) ports, and memory addresses.For server clusters, a physical or logical entity that is capable of being managed by a cluster, brought online and taken offline, and moved between nodes. A resource can be owned only by a single node at any point in time.See also node.See also server cluster.
root target
The mapping destination of a DFS root, which corresponds to a shared folder on a server.See also DFS root.See also target.
round robin
A simple mechanism used by DNS servers to share and distribute loads for network resources. Round robin is used to rotate the order of resource records (RRs) returned in a response to a query when multiple RRs of the same type exist for a queried DNS domain name.
