Storage system for virtualizing control memory

Details Storage system for virtualizing control memory Storage system for virtualizing control memory

2006-12-01

2010-06-22

Shah, Sanjiv (Department: 2185)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

C711S001000, C711S003000, C711S118000, C711S122000, C711S129000, C711S202000, C711S203000, C711S205000, C711S206000

Reexamination Certificate

active

07743209

ABSTRACT:
There is provided a storage system capable of handling a large amount of control data at low cost in high performance. The storage system includes a cache memory for temporarily storing data read/written between a host computer and a disk array, a CPU for making a control related to data transfer, and a local memory for storing control data utilized by the CPU. The disk array has a first user data storing area for storing user data and a control data storing area for storing all control data. A control unit has a virtualization unit for allocating a memory space of the control data storing area to a virtual address accessible from the CPU, reading the control data specified by the virtual address to a physical address of the local memory, and transferring the control data to the CPU.

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