Abstract: A cutting disc core which has a circular shaped body which has a center hole and a circular peripheral edge. Formed within the body and located spaced from the center hole and also the peripheral edge are a series of scroll shaped slits each of which has a longitudinal axis that is displaced at an acute angle relative to a radius line which passes through the slit. Each of the slits may be filled with a filler with this filler comprising an epoxy resin impregnated with aluminum powder. Each of the slits are of scroll shape.

Abstract: A system and an arrangement that process payment requests received from a number of distinct data communication devices via respective communications channels and consistent with different communications protocols. In an example embodiment, a payment processing system includes a plurality of data communications devices that transmit a plurality of payment requests in connection with purchases via respective communication channels. Each transmitted payment request includes a merchant identification code and a set of customer financial account data. The system further includes a payment server arrangement that receives the payment requests from the data communications devices at the respective channels via a plurality of adapter modules corresponding to each of the communication channels. Each of the adapter modules includes a payment processing application that identifies a financial institution identification code associated with the merchant identification code.

Abstract: In a storage system comprising an array of storage devices, including a processor and memory, a plurality of logical tracks are organized on the storage devices in segments comprising columns striped across the storage devices. A system and method are provided for storing logical tracks in the storage devices. Sequentially logically related logical tracks are stored together in neighborhoods. Logical tracks of the same neighborhood destaged at the same time are assigned to a single open segment with other logical tracks of the same neighborhood type. The time at which open segments are designated as closed segments to be written to the storage devices is based on performance, disk utilization and memory utilization criteria. Logical tracks are never split between segment columns. Also, attempts are made not to split a neighborhood of logical tracks being destaged together between segment columns.

Abstract: A method and an arrangement for providing products and services to current electronic funds transaction point of sale (EFTPOS) terminals without compromising the security of payment processing nor having to replace all of the EFTPOS terminals in the EFTPOS system. In one example embodiment, an electronic finds transaction point of sale (EFTPOS) arrangement is configured and arranged for communication via a first secure channel with a financial application hosted by a data processing system of a financial institution. The arrangement is also configured for communication via a second non-secure channel with a vendor application hosted by a data processing system of a vendor and is coupled to a plurality of EFTPOS terminals. The EFTPOS arrangement includes a proxy server configured and arranged to be coupled to the plurality of EFTPOS terminals and to receive sets of data from the vendor application via the non-secure channel.

Abstract: A system and an apparatus that uses a wireless communications device to process payments through a server arrangement that is communicatively coupled with a data processing system located at a financial institution. In one embodiment, a server arrangement includes a processor and a memory arrangement, the memory arrangement including at least one of payment processing application that interfaces with the financial institution DPS. The server arrangement controls a plurality of data transmissions between the server arrangement and at least one EFTPOS terminal and includes at least one non-payment processing application that controls a set of functions of the EFTPOS terminal.

Abstract: In a storage system comprising an array of storage devices, including a processor and memory, a plurality of logical tracks are organized on the storage devices in segments comprising columns striped across the storage devices. A system and method are provided for storing logical tracks in the storage devices. Sequentially logically related logical tracks are stored together in neighborhoods. Logical tracks of the same neighborhood destaged at the same time are assigned to a single open segment with other logical tracks of the same neighborhood type. The time at which open segments are designated as closed segments to be written to the storage devices is based on performance, disk utilization and memory utilization criteria. Logical tracks are never split between segment columns. Also, attempts are made not to split a neighborhood of logical tracks being destaged together between segment columns.

Abstract: A method and a system for using an electronic funds transaction point of sale (EFTPOS) payment system to provide products and services to a point of sale location without compromising the security of payment processing by the EFTPOS payment system. In one example embodiment, the EFTPOS terminal arrangement is coupled to a first vendor data processing system (DPS) hosting a first application and is coupled to a financial institution DPS hosting a second application, wherein the terminal arrangement hosts one or more payment applications and one or more non-payment applications. The method includes accessing the first application at the first vendor DPS via the non-payment application of the EFTPOS terminal arrangement and selecting a product via the non-payment application and offered by the first application on the first vendor DPS.

Abstract: In a storage system comprising an array of storage devices, including a processor and memory, a plurality of logical tracks are organized on the storage devices in segments comprising columns striped across the storage devices. A system and method are provided for storing logical tracks in the storage devices. Sequentially logically related logical tracks are stored together in neighborhoods. Logical tracks of the same neighborhood A0 destaged at the same time are assigned to a single open segment with other logical tracks of the same neighborhood type. The time at which open segments are designated as closed segments to be written to the storage devices is based on performance, disk utilization and memory utilization criteria. Logical tracks are never split between segment columns. Also, attempts are made not to split a neighborhood of logical tracks being destaged together between segment columns.

Abstract: A data processing system dynamically balances allocation of storage areas in a shared coupling facility that is devoted to storage of directory entries and data blocks. Each directory entry includes information regarding the validity of a data block that is locally stored by one or more processor modules in the data processing system. The system includes a coupling facility having a cache memory wherein a first portion is allocated to storage of data blocks and a second portion is allocated to storage of directory entries. Each directory entry, associated with a data block, indicates the validity or invalidity of data contained in a copy of the data block maintained by a connected computer module in its local memory. Each computer module, upon requiring a first data block and determining that (i) the first data block is present in its local memory (i.e., a buffer "hit"), but (ii) is not marked valid and (iii) is not present in the coupling facility (i.e.

Abstract: A system and method are provided for managing persistent and non-persistent data in a log structured disk array. In a log structured array, data are first collected in a log stored in a buffer. When the buffer is full, the data are written to a disk drive. Persistent data are continually accessed over a long period of time such that, most disk activity is associated with persistent data. Preferably, the persistent data are stored in the part of the disk where access times are minimal (active region), such as in the middle cylinders of a disk. When writing data (including during garbage collection procedure) persistent data is written to the active region and non-persistent data is written to the other regions (inactive region). The persistence of the data is monitored. Persistent data is migrated to the active region and non-persistent is migrated to the inactive region.

Abstract: Methods and systems are disclosed which utilize Little's law to improve cache management in a computer based storage system in which the cache is a partitioned or non partitioned write-back cache. In a first aspect, a method and system for managing a write-back cache in a computer based system to accommodate for deferred write operations is disclosed. The method .and system comprises determining an average cast out delay for a cache entry. In a second aspect the method and system comprises utilizing the average castout delay for estimating the number of dirty cache entries which will be needed by the cache if the write operations rate and the average cast out delay does not change significantly. In a third aspect, a method and system for managing a partitioned and prioritized cache in a computer based system to provide sensitivity to a local maximum is disclosed.