Abstract: A clasp for use with both a brooch and a pendant has a support piece having a tip end bent is provided on one surface of a brooch main body, and a rear end of a needle-shaped latch supported on the tip end of the support piece to be free to rotate in a vertical direction. A leg of the needle-shaped latch protrudes from the vicinity of a pivot portion of the latch, and a space surrounded at least in part by the support piece forms a chain insertion portion. When a pendant chain is passed through the chain insertion portion of the support piece, and the tip end of the latch is latched by a latch receiver on the brooch main body, a lower end of the leg abuts against or comes close to one surface of the brooch main body, thereby closing the chain insertion portion.

Abstract: A clasp for use with both a brooch and a pendant has a support piece having a tip end bent is provided on one surface of a brooch main body, and a rear end of a needle-shaped latch supported on the tip end of the support piece to be free to rotate in a vertical direction. A leg of the needle-shaped latch protrudes from the vicinity of a pivot portion of the latch, and a space surrounded at least in part by the support piece forms a chain insertion portion. When a pendant chain is passed through the chain insertion portion of the support piece, and the tip end of the latch is latched by a latch receiver on the brooch main body, a lower end of the leg abuts against or comes close to one surface of the brooch main body, thereby closing the chain insertion portion.

Abstract: When an amount of write data instructed by an upper-level system is small, a plurality of disk units are accessed individually and data split in sectors is written therein (Level 5 RAID). When an amount of write data instructed by the upper-level system is large, the plurality of disk units are accessed in parallel and data split in sectors is written therein (Level 3 RAID). When a disk unit in an array, to which a setup instruction is issued according to a processing request sent from the upper-level system, returns a fault reply, an ID management table is used to allocate an auxiliary disk instead of the failing disk unit. After the allocation, data is restored to the replacement disk using the data in normal disk units in the same rank. In a dual-port access configuration, when two transactions access disk units connected to the same port, a deadlock may occur depending on the access procedure.

Abstract: When an amount of write data instructed by an upper-level system is small, a plurality of disk units are accessed individually and data split in sectors is written therein (Level 5 RAID). When an amount of write data instructed by the upper-level system is large, the plurality of disk units are accessed in parallel and data split in sectors is written therein (Level 3 RAID). When a disk unit in an array, to which a setup instruction is issued according to a processing request sent from the upper-level system, returns a fault reply, an ID management table is used to allocate an auxiliary disk instead of the failing disk unit. After the allocation, data is restored to the replacement disk using the data in normal disk units in the same rank. In a dual-port access configuration, when two transactions access disk units connected to the same port, a deadlock may occur depending on the access procedure.