US 2019/0155704 A1 · STORAGE SYSTEM, STORAGE CONTROLLER, AND COMPUTER-READABLE RECORDING MEDIUM HAVING STORED THEREIN PROGRAM FOR CONTROLLING STORAGE

Abstract

Before an active program replacement is carried out, a storage controller confirms a communication state between a redundant storage controller having a redundant configuration with the storage controller and the second storage device, and prohibits, in a case where an abnormality is detected in the communication state between the redundant storage controller and the second storage device, the active program replacement of the first storage controller. This inhibits occurrence of system down when active firmware replacement process is to be carried out in a storage system including multiple storage devices connected to one another.

Claims13

Dependent claims

A storage system comprising:

a first storage device that is communicably connected to a host device;
and
a second storage device that is communicably connected to the first storage device and that performs a process through the first storage device in response to an access request from the host device, wherein,
the first storage device comprises a first storage controller and a second storage controller, the first storage controller and the second controller being redundantly connected to the host device;
the first storage controller and the second controller are redundantly connected to the second storage device;
before the first storage controller disconnects a connection from the second storage device to carry out active program replacement, the first storage controller confirms a communication state between the second storage controller and the second storage device;
and
in a case where an abnormality is detected in the communication state between the second storage controller and the second storage device, the active program replacement of the first storage controller is prohibited.

5 more elements

A storage controller provided to a first storage device communicably connected to a host device and a second storage device, the storage controller comprising:

a first communicator that is communicably connected to the host device;
a second communicator that is communicably connected to the second storage device;
and
a maintenance controller that disconnects a connection from the second storage device and carries out an active program replacement, wherein
the maintenance controller
confirms a communication state between a redundant storage controller having a redundant configuration with the storage controller and the second storage device before t the active program replacement is carried out;
and
prohibits, in a case where an abnormality is detected in the communication state between the redundant storage controller and the second storage device, the active program replacement of the storage controller.

5 more elements

A non-transitory computer-readable recording medium having stored therein a storage controlling program which causes a processor of a storage controller provided to a first storage device communicably connected to a host device and a second storage device to carry out a process comprising:

confirming a communication state between a redundant storage controller having a redundant configuration with the storage controller and the second storage device before the maintenance controller disconnects a connection from the second storage device and carries out an active program replacement;
and
prohibiting, in a case where an abnormality is detected in the communication state between the redundant storage controller and the second storage device, the active program replacement of the storage controller.

Dependencies are inferred from the claim text.

Storage system, storage controller, and computer-readable recording medium having stored therein program for controlling storage

Life of this patent

Storage system, storage controller, and computer-readable recording medium having stored therein program for controlling storage

Life of this patent

Abstract

Claims13