摘要:
A positive type radiation-sensitive resin composition which comprises a 1,2-quinonediazide compound and an alkali-soluble novolac resin produced by poly-condensing phenols represented by the formulas (I) and (II) in a molar ratio of (I)/(II) of 1/99 to 100/0 with a carbonyl compound: ##STR1## wherein R.sup.1 and R.sup.2, which may be the same or different, represent hydroxyl groups, hydrogen atoms, alkyl groups, aryl groups, aralkyl groups, alkenyl groups, halogen atoms, alkoxy groups, alkoxycarbonyl groups, aroxycarbonyl groups, alkanoyloxy groups, aroyloxy groups, acyl groups, cyano groups or nitro groups, ##STR2## wherein R.sup.3, R.sup.4 and R.sup.5, which may be the same or different, represent hydrogen atoms, alkyl groups, aryl groups, aralkyl groups, alkenyl groups, halogen atoms, alkoxy groups, alkoxycarbonyl groups, aroxycarbonyl groups, alkanoyloxy groups, aroyloxy groups, acyl groups, cyano groups or nitro groups. The above positive type radiation-sensitive resin composition is excellent in dry-etching resistance, resolution and heat resistance, and appropriate as a positive type resist for producing integrated circuits in which a resist pattern is formed, and also as a positive type resist for producing a mask.
摘要:
A storage unit is provided with a plurality of sub storage units configured to include a plurality of hard disk drives, an enclosure, a printed wiring board, a power supply device, and a cable holder. The sub storage units each operate separately. The enclosure is provided in the array of hard disk drives so that the distance can be shorter between the enclosure and each of the hard disk drives. With the provision cable holder, communications cables can be both brought closer to the printed wiring board. With such a configuration, the coupling point among the communications cables and the printed wiring board, and the enclosure can be favorably reduced. The resulting storage control apparatus of the invention can be mounted with a larger number of storage devices, thereby being able to keep the signal quality.
摘要:
Embodiments of the present invention are directed to systems and methods of controlling data transfer between a host system and a plurality of storage devices. One embodiment is directed to a virtualization controller for controlling data transfer between a host system and a plurality of storage devices. The virtualization controller comprises a plurality of first ports for connection with the plurality of storage devices each having a storage area to store data; a second port for connection with the host system; a processor; and a memory configured to store volume mapping information which correlates first identification information used by the host system to access a first storage area in one of the storage devices, with second identification information for identifying the first storage area, the correlation being used by the processor to access the first storage area. When data stored in the first storage area is transferred to a second storage area in one of the storage devices, the processor correlates the first identification information with a third identification information for identifying the second storage area and registers the first identification information and the third identification information in the volume mapping information.
摘要:
In a network regulated so that the unique identification information for a basic storage apparatus and that of each of a plurality of additional storage apparatuses do not overlap, the storage apparatuses can be connected to the network without being assigned unique identification information. The basic storage apparatus judges, when an additional storage apparatus is powered-on, whether or not an initial value is set in an identification information setting unit in the additional storage apparatus, the identification information setting unit being where unique identification information in the network is set. If it is judged that an initial value is set in the identification information setting unit, the basic storage apparatus enters a first mode in which it creates unique identification information, replaces the initial value with the created identification information, and recognizes the created identification information as unique identification information in the network. If it is judged that a value other than the initial value is set in the identification information setting unit, the basic storage apparatus recognizes that value as unique identification information in the network.
摘要:
A first free port present in a controller or a switch device is physically connected to a second free port present in a switch device (switch device in another storage device unit) other than the controller or switch device comprising the first free port. The possibility of logical connection via a physical path connecting the first free port and second free port is controlled.
摘要:
A copy management switch is placed in a network that connects a storage device with a computer. This copy management switch is connected to the computer, a first storage device, and a second storage device over the network. The copy management switch copies beforehand data stored in the first storage device to the second storage device. On receiving a read request, which is issued from the computer to the first storage device, the copy management switch converts the read request to the first storage device into a read request to the second storage device, and then transmits the converted read request to the second storage device. The second storage device transfers, to the copy management switch, data corresponding to the read request. The copy management switch transfers the data to the computer as data transferred from the first storage device.
摘要:
A storage subsystem of a control type holding redundant data wherein an access request from an upper-level device on a file basis is processed cooperatively by a plurality of storage systems forming the storage subsystem. To this end, each of the storage systems forming the storage subsystem has an element for processing the access request from the upper-level device on a file basis and updating the redundant data involved by the access request. Further, the storage system has an element for holding positional information on a recording medium for each file to be stored in its own and access history information, and rearranging storage areas under arbitrary conditions.
摘要:
A storage system is provided with a plurality of interface units each for connection with a server; an interface unit for connection with hard disk drives; a plurality of microprocessor units each for processing commands; and a switch unit for interconnecting the interface units and microprocessor units. A management console is also connected to the storage system. The storage system forces the management console to select an unused interface unit from among the plurality of interface units for use in a data input/output process between the server and the storage system, select a microprocessor unit which meets required performance of the server from among the plurality of microprocessor units for use in the data input/output process, and notify the administrator of the selected interface unit and microprocessor unit.
摘要:
A host computer is connected with a magnetic disk storage device by a SCSI bus. In the magnetic disk storage device, a plurality of partitions are set in a disk drive unit and have device identifiers (ID's) respectively allocated thereto as SCSI ID's=1, 2 and 3, which are supported by a disk controller. When the host computer has acquired the control of the SCSI bus through an arbitration and has selected, for example, the partition with the device identifier SCSI ID=1, the disk controller permits the host computer to access the partition in response to the selection. Since the partitions are different in attributes, properties etc., they seem to be magnetic disk storage devices that at separate from one another when viewed from the host computer. Thus, the single magnetic disk storage device can be managed as a plurality of storage devices of different nature.
摘要翻译:主机通过SCSI总线与磁盘存储设备连接。 在磁盘存储装置中,将多个分区设置在磁盘驱动单元中,并且具有分配给其的设备标识符(ID)作为SCSI ID = 1,2和3,它们由磁盘控制器支持。 当主计算机通过仲裁获得SCSI总线的控制,并且已经选择了例如具有设备标识符SCSI ID = 1的分区时,磁盘控制器允许主计算机响应于选择来访问分区。 由于分区在属性,属性等方面不同,它们似乎是从主计算机查看时彼此分离的磁盘存储设备。 因此,单个磁盘存储装置可以被管理为具有不同性质的多个存储装置。
摘要:
An occupant holding-back device is provided which is capable of preventing unnecessary operations. When the amount of a webbing drawn from a retractor is any one of equal to and larger than a predetermined value and a tongue mounted on the webbing is coupled to a buckle, an ignition control member is brought into a stand-by state. If an acceleration sensor detects an acceleration which is any one of equal to and larger than a predetermined value, an inflator is ignited, causing a bag accommodated in the webbing to be expanded. When the occupant holding-back device is not being worn by an occupant, or when the occupant holding-back device is utilized for fixing a child seat, the ignition of the inflator is prohibited. Hence, unnecessary operations of the occupant holding-back device is prevented.