摘要:
A storage subsystem such as an array of disk drives, method of managing disk drives in the storage subsystem and program product therefor. The storage subsystem may be a redundant array of independent disks (RAID) and the individual disks drives may be Self-Monitoring, Analysis and Reporting Technology (SMART) capable drives. When one of the drives gives an indication of an impending failure, a disk image of the failing disk is built on an available spare disk. Once the image is complete, the failing disk may be replaced without down time for rebuilding a failed disk.
摘要:
Lockable covers are used to cover either of two types of shield blocks to prevent access to circuits within either of two types of external ports on computing devices. Each such shield block covers the port contacts associated with these circuits, includes locking surfaces for holding the lockable cover in place, and is itself held in place by the attachment features provided on the external port for holding an external cable in place. One such shield block is held in place by a pair of screws extending into threaded holes in the external port, while the other such shield block is held in place by a pair of flexible wire bails rotatably mounted in the external port.
摘要:
Apparatus for assigning addresses to devices connected to a small computer system interface (SCSI) bus. A second configure bus interconnects address assignable devices on the SCSI bus. The assignable devices may be used in a mixed system where some devices have fixed non-assignable addresses. The master device in the SCSI bus transmits configuration commands over the configuration bus and addresses for assignment over the SCSI bus. Acknowledgements are received back from a device which has accepted an address. Once configured with an address, the device propagates subsequent configuration commands to an adjacent device.
摘要:
A storage subsystem such as an array of disk drives, method of managing disk drives in the storage subsystem and program product therefor. The storage subsystem may be a redundant array of independent disks (RAID) and the individual disks drives may be Self-Monitoring, Analysis and Reporting Technology (SMART) capable drives. When one of the drives gives an indication of an impending failure, a disk image of the failing disk is built on an available spare disk. Once the image is complete, the failing disk may be replaced without down time for rebuilding a failed disk.
摘要:
A method and system utilizing backup disk drives in disk array systems. In one aspect, a disk array system includes one or more disk arrays, each including two or more disk drives. The system includes a spare disk drive, and a controller operative to assign the spare disk drive to a particular one of the disk arrays having a type different than the type of the spare disk drive in response to a failure of a disk drive of the particular disk array, such that the spare disk drive stores data from and operates in place of the failed disk drive.
摘要:
Arrangements for physically partitioning a bus having a well defined architecture as a physical entity, wherein the partitioning is logically transparent to a computer and devices which communicate through the bus and serves to avoid problems potentially arising because of the scope of actions permitted by the architecture. A typical bus architecture to which present arrangements have relevance is that associated with SCSI (Small Computer System Interface) buses. The potential problems allowed to occur architecturally involve: (a) exposures of data security/integrity; (b) excessive signal degradation due to use of signal rates which although allowed by the architecture are inappropriate for a particular bus loading environment also allowed by the architecture; (c) restrictions preventing parallel transfer of data between the computer and multiple storage devices; (d) restrictions unduly limiting the number of devices attachable to one logical bus path (one input-output channel of the computer). The disclosed arrangement partitions the bus into two or more physical entities which to the computer appears as one logical entity.
摘要:
A plug-in feature board for a computer system has special circuitry to permit the board to customize itself to the particular slot into which it is inserted. Computers of the type intended for individual use or use in small networks typically provide insertion slots including connectors to permit feature boards to be added and connected to a bus of the computer for adding new function or capacity. As the computing power of such systems has increased there have been increases in the size of portions of the connecting bus to permit improvements in data transfer performance. In a given computer system there are often two or more bus connector configurations presented in respective slots. By so converting electrical states at selected connector positions as to provide signal information for determining bus configuration for the slot, special logic provided on the board is enabled to determine the characteristics of the slot in which the board is placed and customizes the board to respond or limit response in accordance with the requirements for that configuration. By so adapting to the slot the board achieves enhanced applicability and avoids certain system disabling malfunctions which can occur when a board is plugged into a slot for which it is not configured.
摘要:
Consolidating computer memory drive management in a computing system, the computing system including a plurality of computer memory drives, a system memory drive manager, and one or more light pipes, including: detecting, by a system memory drive manager, an multi-drive tray memory drive manager; configuring the system memory drive manager to communicate with the memory drive over the light pipe; and communicating, by the system memory drive manager, with the memory drive over the light pipe.
摘要:
A cable connector, terminator, or shield is fastened in place over a port connector in a unit having a lockable cover, by fastening means which can only be accessed when the cover is unlocked and opened or removed. In a first version, the cable connector, terminator, or shield includes a pair of tabs extending into the unit through a slot at each end of the port connector, with each tab having a notch which forms a latching surface. A rotatable bracket, engaging these latching surfaces, prevents the removal of the connector, terminator, or shield. With the cover opened or removed, this bracket can be rotated into a position in which the latching surfaces are released. In a second version, a locking bracket is provided to extend around an outer portion of the cable connector, terminator, or shield. This locking bracket includes a shaft extending through a hole into the unit, to be fastened in place by a nut engaging a threaded portion of the shaft. The nut can be accessed to release the shaft from within the unit only when the lockable cover is opened or removed. In a third version, the connector, terminator, or shield includes a pair of slidably mounted shafts, which extend through holes at each end of the port connector to engage holes within a latching bar. When the lockable cover is opened or removed, the latching bar can be manually slid from a locked position in which these shafts are held in place, to an unlocked position, in which they are released. Thus, in all versions, physical access to electronic circuits within the port connector is prevented as long as a cable connector, terminator, or shield is held in place with the lockable cover locked in its closed position.
摘要:
A storage subsystem such as an array of disk drives, method of managing disk drives in the storage subsystem and program product therefor. The storage subsystem may be a redundant array of independent disks (RAID) and the individual disks drives may be Self-Monitoring, Analysis and Reporting Technology (SMART) capable drives. When one of the drives gives an indication of an impending failure, a disk image of the failing disk is built on an available spare disk. Once the image is complete, the failing disk may be replaced without down time for rebuilding a failed disk.