Abstract: When a cluster is configured by hypervisors of a plurality of servers, a shared storage including internal storages of the plurality of servers can be used. In a storage system in which a hypervisor managing VMs on each of the plurality of servers is included and the plurality of hypervisors configures a cluster, the plurality of servers each include a storage VM that provides the shared storage. One of the plurality of servers includes a manager VM that manages the hypervisors of the plurality of servers as the cluster. A virtual volume of the shared storage is provided as an LU for constructing the manager VM.

Abstract: An archive system and a file storage system are connected via a communication network, wherein the file storage system (a) replicates a file to the archive system; (b) manages the replicated file as a file to be stubbed; (c) updates the priority information of a metadata based on a result computed from the priority information of metadata of an already stored file and the priority information of the access request; (d) retains an access date and time information of the access request in the metadata; (e) monitors a used capacity of the file storage system; and (f) starts a deleting process of a file to be stubbed using either the priority information or the date and time information in the metadata when the used capacity exceeds an upper limit set in advance.

Abstract: A cluster system coupled to a client computer via a network has plural nodes which provide services to the client computer. A first node of the plural nodes has a priority recognizing processing module, which consults a priority of a frame received from the client computer. A second node of the plural nodes has a fail over processing module, which performs fail over on plural software resources managed by the first node according to an order of fail over priority that is based on the priority consulted by the priority recognizing processing module of the first node.

Abstract: A cluster system coupled to a client computer via a network has plural nodes which provide services to the client computer. A first node of the plural nodes has a priority recognizing processing module, which consults a priority of a frame received from the client computer. A second node of the plural nodes has a fail over processing module, which performs fail over on plural software resources managed by the first node according to an order of fail over priority that is based on the priority consulted by the priority recognizing processing module of the first node.

Abstract: On the basis of a priority table in which a plurality of group restoration priorities respectively corresponding to a plurality of element groups are recorded, the priority-based backup part backs up all of the backup object elements belonging to a first element group in a first continuous region which is a continuous recording region on a tape recording medium, and backs up all of the backup object elements belonging to a second element group whose group restoration priority is lower than that of said first element group in a second continuous region which is located on the tape tail end side of said first continuous region.

Abstract: It is an object of the present invention to allow easy upgrading of the version of the OS in a failover cluster system. When the user mounts a storage medium 4 on the node 1, and gives instructions to install a program, the installation program 12 requests the failover program 11 for the stopping of heartbeat communications. The node 1 voluntarily stops heartbeat communications in a state in which the system of this node is operating normally. When the failover program 21 of the node 2 detects the stopping of heartbeat communications, this program starts failover, and takes over the business service of the node 1. During the execution of failover by the node 2, the program stored in the storage medium 4 is installed in the node 1. When this installation is completed, the node 1 transmits a failback request to the node 2, and restarts the business service.

Abstract: On the basis of a priority table in which a plurality of group restoration priorities respectively corresponding to a plurality of element groups are recorded, the priority-based backup part backs up all of the backup object elements belonging to a first element group in a first continuous region which is a continuous recording region on a tape recording medium, and backs up all of the backup object elements belonging to a second element group whose group restoration priority is lower than that of said first element group in a second continuous region which is located on the tape tail end side of said first continuous region.

Abstract: It is an object of the present invention to allow easy upgrading of the version of the OS in a failover cluster system. When the user mounts a storage medium 4 on the node 1, and gives instructions to install a program, the installation program 12 requests the failover program 11 for the stopping of heartbeat communications. The node 1 voluntarily stops heartbeat communications in a state in which the system of this node is operating normally. When the failover program 21 of the node 2 detects the stopping of heartbeat communications, this program starts failover, and takes over the business service of the node 1. During the execution of failover by the node 2, the program stored in the storage medium 4 is installed in the node 1. When this installation is completed, the node 1 transmits a failback request to the node 2, and restarts the business service.

Abstract: A method is provided for forming a porous film having desired average pore diameter and pore density in a multi-printing-adaptive thermal transfer recording medium having a foundation, a heat-meltable ink layer formed on one side of the foundation and the porous film provided in the heat-meltable ink layer at a location proximate to a surface thereof, which method comprises the steps of: coating the heat-meltable ink layer with a W/O emulsion containing as an essential ingredient thereof at least one resin selected from the group consisting of cellulose acetate, cellulose acetate propionate, cellulose acetate butyrate, ethyl cellulose, nitrocellulose and ethyl hydroxyethyl cellulose; and drying the resultant coating to form a porous film.