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In computer programming, redundant code is ... The second iX*2 expression is redundant code and ... As a consequence of using the C preprocessor, the compiler will ...
For instance, when customer data are duplicated and attached with each product bought, then redundancy of data is a known source of inconsistency since a given customer might appear with different values for one or more of their attributes. [4] Data redundancy leads to data anomalies and corruption and generally should be avoided by design; [5 ...
Diagram of a RAID 1 setup. RAID 1 consists of an exact copy (or mirror) of a set of data on two or more disks; a classic RAID 1 mirrored pair contains two disks.This configuration offers no parity, striping, or spanning of disk space across multiple disks, since the data is mirrored on all disks belonging to the array, and the array can only be as big as the smallest member disk.
For example, 3ware 9650SE uses 20 seconds as the timeout, [1] while for the LSI Logic used in IBM x-series it is 10 seconds. [2] Widely available Intel Matrix RAID / Intel Rapid Storage Technology, embedded in Intel server motherboards and modern desktop motherboards, is a pseudo-hardware controller, not a true hardware RAID controller.
In compiler theory, partial redundancy elimination (PRE) is a compiler optimization that eliminates expressions that are redundant on some but not necessarily all paths through a program. PRE is a form of common subexpression elimination .
Node 1 strictly dominates 2, 3, and 4 and the immediate predecessors of node 4 are nodes 2 and 3. Dominance frontiers define the points at which Φ functions are needed. In the above example, when control is passed to node 4, the definition of result used depends on whether control was passed from node 2 or 3. Φ functions are not needed for ...
Around 1997, with the introduction of ATAPI-4 (and thus Ultra-DMA-Mode, which enabled fast data transfers with less CPU utilization) the first ATA RAID controllers were introduced as PCI expansion cards. Those RAID systems made their way to the consumer market, for users wanting the fault-tolerance of RAID without investing in expensive SCSI ...
Due to delayed availability of conforming C99 implementations, C11 makes certain features optional, to make it easier to comply with the core language standard. [2] [3] The final draft, N1570, [4] was published in April 2011. The new standard passed its final draft review on October 10, 2011 and was officially ratified by ISO and published as ...