US 2006/0224851 A1 · Storage controller and storage system

Abstract

Provided is a storage controller having at least one or more first logical devices to be accessed by the host system, and at least one or more virtual devices for connecting the first logical devices and one or more storage devices. At least one of the virtual devices is connected to a second logical device of the other storage controller. With this storage controller, the access attribute of the first logical device and the access attribute of the second logical device are made to coincide by transmitting and receiving access attribute information of at least either the first logical device or the second logical device to and from the second storage controller.

Claims16

Dependent claims

A storage controller connected communicably to a host system and another storage controller and which performs data processing according to a request from said host system, the storage controller comprising:

at least one or more first logical devices to be accessed by said host system;
and
at least one or more virtual devices for connecting said first logical devices and one or more storage devices;
wherein at least one of said virtual devices is connected to a second logical device of said other storage controller, and an access attribute of said first logical device and an access attribute of said second logical device are made to coincide by transmitting and receiving access attribute information of at least either said first logical device or said second logical device to and from said other storage controller.

1 more element

A storage system comprising a first storage controller and a second storage controller in which said first storage controller and said second storage controller are connected communicably, and which performs data processing according to a request from a host system,

wherein said first storage controller comprises at least one or more first logical devices to be accessed by said host system, and at least one or more virtual devices for connecting said first logical devices and one or more storage devices;
at least one of said virtual devices is connected to a second logical device of said second storage controller;
and
said first storage controller transmits and receives access attribute information of at least either said first logical device or said second logical device to and from said second storage controller so as to make the access attribute of said first logical device and the access attribute of said second logical device coincide.

1 more element

Dependencies are inferred from the claim text.

Storage controller and storage system

Life of this patent

Storage controller and storage system

Life of this patent

Abstract

Claims16