ETYM Icel. reith a riding, raid; akin to Eng. road. Related to Road a way.
1. An attempt by speculators to defraud investors; SYN. mulcting.
2. The act of mulcting public money.
3. An attempt by professional operators to depress stock prices by concerted selling.

To make a sudden surprise attack on; SYN. bust.

Acronym for redundant array of independent (or inexpensive) disks. A data storage method in which data is distributed across a group of computer disk drives that function as a single storage unit. All the information stored on each of the disks is duplicated on other disks in the array. This redundancy ensures that no information will be lost if one of the disks fails. RAID is generally used on network servers where data accessibility is critical and fault tolerance is required. There are various defined levels of RAID, each offering differing trade-offs among access speed, reliability, and cost. See also disk controller, error-correction coding, Hamming code, hard disk, parity bit, server (definition 1).
(acronym for redundant array of independent (or inexpensive) discs) In computing, arrays of discs, each connected to a bus, that can be configured in different ways, depending on the application. Raid 1 is, for example, disc mirroring, while Raid 5 spreads every character between discs. Raid is intended to improve performance and data security.