G - Physics – 06 – F
Patent
G - Physics
06
F
G06F 12/00 (2006.01) G06F 3/06 (2006.01) G06F 11/10 (2006.01) G06F 11/20 (2006.01) G06F 15/16 (2006.01)
Patent
CA 2220974
The present invention is directed to memory subsystems that use redundant arrays of inexpensive disks (RAID). The subsystem (400) enables dual concurrent accesses to the parity information associated with data being transferred between the host (402) and disk drives (410), by including a dual- ported staging memory (418) where the host and disk drives are coupled to one port and the RAID engine to the other port. Positioning the RAID engine (422) on the opposite side of the staging memory in relation to the host and disk drives allows for pipelined asynchronous memory subsystem operation, improving system throughput.
L'invention concerne des sous-systèmes de mémoire dans lesquels des piles redondantes de disques bon marché (RAID) sont utilisées. Le sous-système (400) permet des accès doubles concurrents aux informations de parité associées aux données en cours de transfert entre l'hôte (402) et les unités de disque (410), grâce à une mémoire intermédiaire à double accès (418) dans laquelle l'hôte et les unités de disque sont couplés à un port et la machine RAID à l'autre port. Le positionnement de la machine RAID (442) sur le côté opposé de la mémoire intermédiaire par rapport à l'hôte et aux unités de disques permet l'exploitation d'une mémoire asynchrone en pipeline, et d'augmenter le débit du système.
Emc Corporation
Gowling Lafleur Henderson Llp
Mti Technology Corporation
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