摘要:
A situation where, even though a file system set with an additional function has been expanded, the additional function is unable to operate is prevented from occurring. Provided are a file control computer and its system having a main computer including a file system for managing reading and writing of data between the client computer and the storage device, a control circuit for controlling the file system, and a memory circuit for storing management information of the file system. The memory circuit stores setting information which is set with an additional function that is set to the file system, and a condition necessary for operating the additional function. Upon expanding the file system based on the management information, the control circuit determines a status of fulfillment of the condition in the expanded file system, and outputs warning information if the determination result denies fulfillment of the condition.
摘要:
Predicting whether a file migration will be executed successfully or not.A file storage apparatus in a high-order tier generates a migration task list that records scheduled time periods of migration execution and a total file size of files which are targets to be migrated, and transfers the generated migration task list to a file storage apparatus in a low-order tier; and the file storage apparatus in the low-order tier generates, based on the migration task list, a migration overlap table that records, for each unit time, whether the execution of a migration is scheduled or not, and a remaining file size table that records a predicted value of a data transfer amount for each unit time and a predicted value of a remaining file size for each unit time; and if the predicted value in the last scheduled time period, from among the predicted value of the remaining file size for each unit time which is recorded in the remaining file size table, is equal to or less than 0, it is predicted that the migration will be executed successfully; and if the predicted value in the last scheduled time period is more than 0, it is predicted that the execution of the migration will fail.
摘要:
A computer system comprising storage devices having different characteristics, a client computer, and a file access controller managing the storage devices with the HSM is disclosed. The file access controller provides a normal directory tree and a virtual directory tree, according to the configuration, and provides a first file stored in a first storage device through the normal directory tree and the virtual directory tree. And, the file access controller switches providing of a second file stored in a second storage device, depending on a used directory tree, which is used by the at least one client computer, and which is the normal directory tree or the virtual directory tree. Examples of the switch are about accessibility of the second file and recall processing of the second file.
摘要:
A tape library comprises: a plurality of tape media; a plurality of slots in which the plurality of tape media are respectively stored; a drive in which a tape medium extracted from any of the plurality of slots is set and which performs tape reading or writing in respect of this tape medium; and a controller by which a tape medium is extracted from a designated slot of these plurality of slots and set in the drive. The host computer comprises: a plurality of virtual computers; a first storage region in which is stored slot allocation information expressing which slot is allocated to which virtual computer; and an access control unit that specifies the slot allocated to a first virtual computer, of the plurality of the virtual computers, from the slot allocation information, and restricts access from the first virtual computer to the tape medium in the specified slot.
摘要:
A log management system is devised to easily discover improper handling log information by managers. Virtual operation systems (OS) are respectively installed for respective users in a file server constructed as an NAS device. These virtual OS function as virtual NAS. The virtual OS and manager OS exchange information relating to log information via an information exchange part constructed as a kernel. The log information produced in the virtual OS is transmitted to a first log management device via a first communications network, and is also transmitted to a second log management device via a second communications network separated from the first communications network. As a result of the same log information being managed by multiplex management using separate management devices, the system detects whether or not there has been any improper handling of the log information.
摘要:
A storage system connected to a network is provided which is capable of managing other devices connected to the network. A storage system (400) is connected via a switch (200) to a network (500) to provide clients (100) with data. The storage system has a control unit which sets the switch (200) and a setting command preserving unit which keeps a command for setting the switch (200). The control unit uses the preserved command to set the switch (200).
摘要:
In case a fault has occurred in a volume, it was so far difficult to correctly notify a fault by using a host computer which can access the volumes managed by a management computer that integrally manages a plurality of devices constituting a network. The management program of the invention is executed by the management computer connected to computers and to a plurality of storage devices for managing the volumes connected to the computers through a SAN (storage area network). The management program executes a procedure for receiving a notice of fault in the volume from the storage devices, a procedure for receiving volume access control information from a plurality of storage devices for specifying the computers that can access the volumes, and a procedure for notifying the fault in the volume to the computers that are permitted to access the volumes based on the volume access control information.
摘要:
The present invention provides a log management system which is devised so that improper behavior by managers with regard to the log information can easily be discovered. Virtual OS are respectively installed for respective users in a file server that can also be constructed as an NAS device. These virtual OS function as virtual NAS. The virtual OS and manager OS can exchange information relating to log information via an information exchange part constructed as a kernel. The log information produced in the virtual OS is transmitted to a first log management device via a first communications network, and is also transmitted to a second log management device via a second communications network. The respective networks are separated. As a result of the same log information being managed by multiplex management using separate management devices, it can be detected whether or not there has been any improper behavior with respect to the log information.
摘要:
A data intermediate server 300 comprises the functions of reading data stored in storage servers ST1 through ST3 and sending the data to a media server 600 according to backup commands received from a backup control device 400 over a local area network LAN4. The data intermediate server 300 and the storage servers ST1 through ST3 are connected by channels that do not permit Internet protocol traffic but only data targeted for backup and control data assigned thereto. As a result, client data stored on the storage servers can be properly backed up while preventing data from being improperly retrieved or leaked.
摘要:
The server SV1 receives instructions to acquire snapshot images from control server 20, acquires the snapshot images of logic disk 110, and stores them in logic disk 130, and at the same time acquires snapshot images of logic disk 120, and stores them in logic disk 140. The server SV1 constructs a virtual file server environment using snapshot images of system files stored in logic disk 130, and provides data file snapshot images stored in logic disk 140 to the client CL.