公开(公告)号：JPH04303B2

公开(公告)日：1992-01-07

申请号：JP10652786

申请日：1986-05-09

Applicant: TANDEM COMPUTERS INC

Inventor： SURIKUMAA AARU CHANDORAN ,  MAAKU ESU UOOKAA

IPC: G06F11/18 ,  G06F1/04 ,  G06F1/12 ,  H03K5/00 ,  H03K5/135 ,  H03K5/151

公开(公告)号：JPH05346866A

公开(公告)日：1993-12-27

申请号：JP31468492

申请日：1992-11-25

Applicant: TANDEM COMPUTERS INC

Inventor： ARUBAATO RUI ,  MAAKU ESU UOOKAA

IPC: G06F3/06 ,  G06F11/00 ,  G06F11/10 ,  G06F11/14 ,  G06F11/16 ,  G06F11/20 ,  G06F12/06 ,  G11C29/00

Abstract: PURPOSE: To establish the completion and maintenance of a data changing operation to a redundant array data storage system, and to establish the maintenance of redundancy in the system. CONSTITUTION: A check point is applied to an operation. After the completion of a buffer provided at a reliability host processing formed of main and second CPU 1a and 1b, written data in host CPU adapters 2a and 2b are blocked by a buffer 11 before the data are transmitted to array controllers 3a and 3b so that the completion of a data changing operation can not be disturbed by the fault of the CPU 1a and 1b. A reliability array processing is formed of the main and second array controllers 3a and 3b. A storage device 4 provided with the array controllers 3a and 3b and a storage array is backed up by a power battery. All data changing operation command information is stored by the non-volatile memory of an array controller for data records which are not sufficiently written in the storage devise 4 in order to prepare for the following retry.