Storage system
First Claim
1. A storage system group comprising:
- a first storage system coupled to a host device for sending data to and configured to receive data from said host device, the first storage system including a plurality of disk drives and a disk adaptor used to control the disk drives; and
a second storage system coupled to said first storage system for receiving data from said first storage system, wherein said first storage system comprises;
a first storage area for writing the data received from said host device, the first storage area being defined on at least on one of the disk drives; and
a second storage area for writing the data written in said first storage area and update information relating to said data, the second storage area being defined on at least on one of the disk drives;
said second storage system comprises a third storage area for storing the data read from said second storage area and the update information relating to said data where the data and update information to be stored in said third storage area are read from said first storage system at given time intervals.
1 Assignment
0 Petitions
Accused Products
Abstract
A first storage system stores information relating to the updating of data stored in that system as a journal. More specifically, the journal is composed of a copy of data that was used for updating and update information such as a write command used during updating. Furthermore, the second storage system acquires the journal via a communication line between the first storage system and the second storage system. The second storage system holds a duplicate of the data held by the first storage system and updates the data corresponding to the data of the first storage system in the data update order of the first storage system by using the journal.
150 Citations
42 Claims
-
1. A storage system group comprising:
-
a first storage system coupled to a host device for sending data to and configured to receive data from said host device, the first storage system including a plurality of disk drives and a disk adaptor used to control the disk drives; and
a second storage system coupled to said first storage system for receiving data from said first storage system, wherein said first storage system comprises;
a first storage area for writing the data received from said host device, the first storage area being defined on at least on one of the disk drives; and
a second storage area for writing the data written in said first storage area and update information relating to said data, the second storage area being defined on at least on one of the disk drives;
said second storage system comprises a third storage area for storing the data read from said second storage area and the update information relating to said data where the data and update information to be stored in said third storage area are read from said first storage system at given time intervals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
-
17. A storage system group comprising:
-
a first storage system coupled to a host device for sending data to and receiving data from said host device, the first storage system including a plurality of disk drives and a disk adaptor to used control the disk drives;
a second storage system coupled to said first storage system for receiving data from said first storage system; and
a third storage system coupled to said second storage system for receiving data from said second storage system;
wherein said first storage system comprises a first storage area for writing data received from said host device;
said second storage system comprises a second storage area for writing the data written in said first storage area in said first storage system and update information relating to said data;
said third storage system comprises a third storage area for storing the data read from said second storage area in said second storage system and update information relating to said data; and
the data and update information to be stored in said third storage area are read from said second storage system at given time intervals. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
-
-
29. A storage system group comprising:
-
a first storage system coupled to a host device for sending data to and receiving data from said host device;
a second storage system coupled to said first storage system for receiving data from said first storage system; and
a third storage system coupled to said second storage system for receiving data from said second storage system;
wherein said first storage system comprises a first storage area for writing data received from said host device;
said second storage system comprises a second storage area for writing data received from said first storage system and a third storage area for writing the data written into said second storage area and update information relating to said data;
said third storage system comprises a fourth storage area for storing data read from said third storage area in said second storage system and update information relating to said data; and
the data and update information to be stored in said fourth storage area are read from said third storage system at given time intervals. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
-
-
40. A storage system provided in a storage system group including two or more storage systems and at least one host, the storage system comprising:
-
a network interface used to coupled the storage system to a remote computer system;
a plurality of storage devices configured to store data or management information;
a storage adaptor configured to control the plurality of storage devices;
a first storage area defined on at least one of the storage devices, the first storage area being configured to store write data transmitted by the host; and
a second storage area defined on at least one of the storage devices, the second storage area being configured to store a journal, the journal including journal data and update information corresponding to the journal data, the journal data corresponding to the write data, wherein the storage system transmits the journal stored in the second storage area to a remote storage system for data mirroring the journal being stored in a third storage area of the remote storage system. - View Dependent Claims (41, 42)
-
Specification