摘要:
A cutter blade is cut-in by being moved towards a deep part of a notch from one open end of the notch while being moved in a forward direction with respect to an outer periphery of a wafer. Immediately before a blade edge reaches the deep part of the notch, cutting movement of the cutter blade is once stopped, reversely moved to a initial piercing position, and thereafter, the cutter blade is moved towards the deep part of the notch from the other open end of the notch while being moved in a reverse direction with respect to the outer periphery of the wafer.
摘要:
An iron-base sintered part having high density and totally enhanced strength, toughness and abrasion resistance, a manufacturing method of the iron-base sintered part, and an actuator are disclosed. The iron-base sintered part is formed by an iron-nickel-molybdenum-carbon-based sintered alloy, has density of 7.25 g/cm3 or more, and has a carburization quenched structure. A method for manufacturing the iron-base sintered part includes a molding process of charging a raw mixture powder of an iron-nickel-molybdenum-based metal powder and a carbon-based powder into a cavity of a molding die and compressing the raw powder in the cavity to form a consolidation body, a sintering process of sintering the consolidation body at a sintering temperature to form a sintered alloy, and a carburization quenching process of heating the sintered alloy in a carburization atmosphere and quenching the heated alloy.
摘要:
To reduce a burden imposed on a system administrator in restore operation, there is provided a computer system including at least one storage system, at least one host computer, and a management computer, in which: the storage system includes: a first processor; a first memory; and a disk drive; the host computer includes: a second processor; and a second memory; the management computer includes: a third processor; and a third memory; the second processor executes plurality of applications; the first processor and the second processor create check points to be used to maintain consistency of data at predetermined timing for the respective applications; and a third processor obtains recovery conditions, which are conditions for a check point to be used for a recovery, and identifies a check point, which satisfies the obtained conditions, from the created check points for the respective applications.
摘要:
Creating a plaintext index from a text that is extracted from a file presents the risk of a leak of confidential information from the created index. To address this problem, provided is a computer system which has a computer, a storage subsystem coupled to the computer, and a network coupling the computer and the storage subsystem. The computer has an interface coupled to the network, a first processor coupled to the interface, and a memory coupled to the first processor. The storage subsystem has a disk device which stores data. A storage area of the disk device is divided into a plurality of storage areas including, at least, a first storage area and a second storage area. The first processor reads a part of data stored in the first storage area, encrypts the part of data read from the first storage area when the data stored in the first storage area is judged as encrypted data, and writes the encrypted part of data in the second storage area.
摘要:
The invention provides a method for computing the appropriate capacity of a journal volume based on the operating patterns of backup and recovery performed by the user, and composing a recovery system that enables recovery to be performed in a short time using journals. The invention provides a computer system comprising a storage system 120 having a volume 124, a managing computer 100 and a host computer 110, wherein the storage system 120 retains a journal of data stored in the volume and a volume replicating the data stored in the volume, and restoring a volume data at any update time point based on the journal and the replicated volume, and upon receiving operation from a user regarding the volume retaining the journal, the managing computer 100 acquires a registration creation demand including a recovery time objective which is the time to be restored and/or a recovery point objective which is the recovery time point and a journal retention period which is the period for retaining the journal, monitors the journal of data stored in the volume, computes the quantity of the journal, and determines the capacity of the volume for retaining the journal.
摘要:
In a method of making a cutter revolve along a circumference of a circle having an optional size to cut an adhesive tape into a circular shape of a predetermined size, the cutter is made revolve while being tilted to an inner circumferential side in the revolving direction of the circumference, and a cutting start point and a cutting end point in a cutting path of the cutter are made coincide with each other.
摘要:
A dicing die-bonding film has a supporting substrate, an adhesive layer formed on the supporting substrate, and a die-bonding adhesive layer formed on the adhesive layer, and further has a mark for recognizing the position of the die-bonding adhesive layer. It is possible to provide a dicing die-bonding film in which in the case a semiconductor wafer and the dicing die-bonding film are stuck onto each other, the position of the die-bonding adhesive layer in the film can be recognized.
摘要:
Provided is a computer system including a plurality of data storage apparatus and manages a bandwidth of a data storage apparatus according to an attribute of a storage volume. A storage system includes an interface for processing access to the storage volume from a host computer, and a control unit for controlling allocation of the storage volume to the host computer. A management computer transmits a request of setting a bandwidth to be accessed by the host computer via the interface in the storage volume to the storage system. The control unit sets the bandwidth corresponding to a ratio of processing access to each storage volume in the storage system based on the request from the management computer, and allocates the storage volume having the bandwidth requested by the host computer set therein to the host computer to be accessed by the host computer to the allocated storage volume.
摘要:
A SAN manager acquires information which each unit manages from a management agent of each unit connected to a SAN, detects virtual volume mapping and real volume mapping in the SAN based upon the acquired information and manages them. A SAN management server holds an event translation dictionary for translating contents of a failure notification message received from each unit in the SAN and detects an effect which failure has upon I/O access of a virtual volume if a failure notification message is received. Further, a function for checking a request for generating a virtual volume from a SAN administrator based upon virtual volume mapping information and real volume mapping information is realized.
摘要:
There is provided a data migrating method including the steps of: calculating, in a case where data stored in a volume is migrated to another volume, a required period of time for migrating the data based on a size of data to be migrated and volume configuration information on the volume in which the migrated data is stored and the volume to which the data is to be migrated; determining a start time at which the data migration starts to generate a volume migration plan; setting a priority of the generated volume migration plan; prioritizing, in a case where a periods of time during which the generated volume migration plan is executed and a period of time during which an existing volume migration plan is executed are overlapped with each other, and changing the start time of at least one of those volume migration plans having a lower priority.