HP P6000 HP P6300/P6500 Enterprise Virtual Array User Guide (593079-001, June - Page 281

asynchronous B backplane bad block bad block replacement bail lock battery baud bay bidirectional block blower C cabinet cable assembly CAC cache cache battery carrier client clone communication LUN condition report Events scheduled as the result of a signal requesting the event or that which is without any specified time relation. An electronic printed circuit board that distributes data, control, power, and other signals among components within an enclosure. A data block that contains a physical defect. A replacement routine that substitutes defect-free disk blocks for those found to have defects. This process takes place in the controller and is transparent to the host. The part of the power supply AC receptacle that engages the AC power cord connector to ensure that the cord cannot be accidentally disconnected. A rechargeable unit mounted within a controller enclosure that supplies backup power to the cache module in case of primary power shortage. The maximum rate of signal state changes per second on a communication circuit. If each signal state change corresponds to a code bit, then the baud rate and the bit rate are the same. It is also possible for signal state changes to correspond to more than one code bit so the baud rate may be lower than the code bit rate. The physical location of a component, such as a drive, I/O module, or power supply in a disk enclosure. Each bay is numbered to define its location. An array that contains both source and destination virtual disks. A bidirectional configuration allows multidirectional I/O flow among several arrays. Also called a sector. The smallest collection of consecutive bytes addressable on a disk drive. In integrated storage elements, a block contains 512 bytes of data, error codes, flags, and the block address header. See fan. An alternate term used for a rack. A fiber optic cable that has connectors installed on one or both ends. General use of these cable assemblies includes the interconnection of multimode fiber optic cable assemblies with either LC or SC type connectors. • When there is a connector on only one end of the cable, the cable assembly is referred to as a pigtail. • When there is a connector on each end of the cable, the cable assembly is referred to as a jumper. Corrective action code. An HP P6000 Command View graphical user interface (GUI) display component that defines the action required to correct a problem. See also read caching, mirrored caching, write caching. High-speed memory that sets aside data as an intermediate data buffer between a host and the storage media. The purpose of cache is to improve performance. See battery. A drive-enclosure-compatible assembly containing a disk drive or other storage devices. An intelligent device that requests the services from other intelligent devices. In the context of HP P6000 Command View, a client is a computer used to access the software remotely using a supported browser. A full copy of a volume usable by an application. See console LUN. A three-element code generated by the EMU in the form where e.t. is the element type (a hexadecimal number), en. Is the element number (a decimal number), and ec is the condition code (a decimal number). 281