×

Storage management system and auto-RAID transaction manager for coherent memory map across hot plug interface

  • US 6,230,240 B1
  • Filed: 06/23/1998
  • Issued: 05/08/2001
  • Est. Priority Date: 06/23/1998
  • Status: Expired due to Term
First Claim
Patent Images

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;

    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, wherein each memory transaction manager comprises;

    a transbus entity to control a multiple access bus;

    a first bus interface to receive memory transactions from a bus and to post the memory transactions on the access bus;

    a mirror entity coupled to the access bus to handle the memory transactions received by the first bus interface, the mirror entity ordering the memory transactions;

    a local memory interface coupled to the access bus to receive the memory transactions from the mirror entity and to execute the memory transactions with respect to a local non-volatile memory; and

    a second bus interface coupled to the access bus to facilitate transfer of the memory transactions to a remote mirrored memory in a different one of the controllers.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×