초록 ▼

A Redundant Array of Independent Disks (RAID) data storage system includes an AutoRAID memory transaction manager for a disk array controller that enables a consistent, coherent memory image of the data storage space to all processors across hot-plug interfaces. To external processes seeking to read

A Redundant Array of Independent Disks (RAID) data storage system includes an AutoRAID memory transaction manager for a disk array controller that enables a consistent, coherent memory image of the data storage space to all processors across hot-plug interfaces. To external processes seeking to read or write data, the memory image looks the same across the hot-plug interface. The disk array controller has two identical controllers, each with its own non-volatile memory, to maintain redundant images of disk array storage space. A hot-plug interface interconnects the two controllers. Each controller has an AutoRAID memory transaction manager that enables sharing of cyclic redundancy check (CRC)-protected memory transactions over the hot-plug interface between the two controllers. The AutoRAID memory transaction managers also facilitate ordered execution of the memory transactions regardless of which controller originated the transactions. Mirrored read and write transactions are handled atomically across the hot-plug interface.

대표청구항 ▼

1. A storage management system for a redundant array of independent disks (RAID) data storage system, comprising: at least two controllers interconnected via a hot-plug interface, each controller having a non-volatile memory to store redundant images of storage space provided by the data storage sy

1. A storage management system for a redundant array of independent disks (RAID) data storage system, comprising: at least two controllers interconnected via a hot-plug interface, each controller having a non-volatile memory to store redundant images of storage space provided by the data storage system; and each controller further having a memory transaction manager that orders memory transactions involving its non-volatile memory and facilitates transmission and receipt of the memory transactions over the hot-plug interface.