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公开(公告)号：US5077736A
公开(公告)日：1991-12-31
申请号：US480019
申请日：1990-02-13
CPC分类号： G06F11/2094 , G06F11/1008 , G06F11/1076 , G11B20/1833 , G11B5/012 , G06F11/1662 , Y10S360/903
摘要： The disk drive memory of the present invention uses a large plurality of small form factor disk drives to implement an inexpensive, high performance, high reliability disk drive memory that emulates the format and capability of large form factor disk drives. The plurality of disk drives are switchably interconnectable to form redundancy groups of N+M parallel connnected disk drives to store data thereon. The N+M disk drives are used to store the N segments of each data word plus M redundancy segments. In addition, a pool of R backup disk drives is maintained to automatically substitute a replacement disk drive for a disk drive in a redundancy group that fails during operation. The number N of data segments in each data redundancy group can be varied throughout the disk drive memory to thereby match the characteristics of the input data or operational parameters within the disk drive memory. Furthermore, a group of U unassigned disk drives can be maintained as a stock of disk drives that can be powered up as needed and assigned to either a redundancy group or to the pool of backup disk drives.
摘要翻译： 本发明的磁盘驱动器存储器使用大量的小尺寸磁盘驱动器来实现模拟大尺寸磁盘驱动器的格式和能力的廉价的，高性能的，高可靠性的磁盘驱动器存储器。 多个磁盘驱动器可切换地互连以形成N + M个并联连接磁盘驱动器的冗余组，以在其上存储数据。 N + M磁盘驱动器用于存储每个数据字的N个段加上M个冗余段。 此外，维护一个R备份磁盘驱动器池，以自动将替换磁盘驱动器替换为在运行期间失败的冗余组中的磁盘驱动器。 每个数据冗余组中数据段的数量N可以在整个磁盘驱动器存储器中变化，从而使输入数据的特性或磁盘驱动器存储器内的操作参数相匹配。 此外，一组U未分配的磁盘驱动器可以维护为可以根据需要加电的磁盘驱动器的库存，并分配给冗余组或备份磁盘驱动器池。
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公开(公告)号：US4989206A
公开(公告)日：1991-01-29
申请号：US463512
申请日：1990-01-11
CPC分类号： G06F11/1076 , G06F11/1008 , G11B20/1833 , G11B5/012 , Y10S360/902 , Y10S360/903
摘要： The disk drive memory of the present invention uses a large plurality of small form factor disk drives to implement an inexpensive, high performance, high reliability disk drive memory that emulates the format and capability of large form factor disk drives. The plurality of disk drives are switchably interconnectable to form parity groups of N+1 parallel connected disk drives to store data thereon. The N+1 disk drives are used to store the N segments of each data word plus a parity segment. In addition, a pool of backup disk drives is maintained to automatically substitute a replacement disk drive for a disk drive in a parity group that fails during operation.
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公开(公告)号：US4989205A
公开(公告)日：1991-01-29
申请号：US463591
申请日：1990-01-11
CPC分类号： G06F11/1076 , G06F11/1008 , G11B20/1833 , G11B5/012 , Y10S360/902 , Y10S360/903
摘要： The disk drive memory of the present invention uses a large plurality of small form factor disk drives to implement an inexpensive, high performance, high reliability disk drive memory that emulates the format and capability of large form factor disk drives. The plurality of disk drives are switchably interconnectable to form parity groups of N+1 parallel connected disk drives to store data thereon. The N+1 disk drives are used to store the N segments of each data word plus a parity segment. In addition, a pool of backup disk drives is maintained to automatically substitute a replacement disk drive for a disk drive in a parity group that fails during operation.
摘要翻译： 本发明的磁盘驱动器存储器使用大量的小尺寸磁盘驱动器来实现模拟大尺寸磁盘驱动器的格式和能力的廉价的，高性能的，高可靠性的磁盘驱动器存储器。 多个磁盘驱动器可切换地互连以形成N + 1并联的磁盘驱动器的奇偶校验组，以在其上存储数据。 N + 1磁盘驱动器用于存储每个数据字的N个段加上一个奇偶校验段。 此外，维护备份磁盘驱动器池，以自动替换替换磁盘驱动器，使其在运行期间失败的奇偶校验组中的磁盘驱动器。
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公开(公告)号：US4914656A
公开(公告)日：1990-04-03
申请号：US212434
申请日：1988-06-28
CPC分类号： G06F11/1076 , G06F11/1008 , G11B20/1833 , G11B5/012
摘要： The disk drive memory of the present invention uses a large plurality of small form factor disk drives to implement an inexpensive, high performance, high reliability disk drive memory that emulates the format and capability of large form factor disk drives. The plurality of disk drives are switchably interconnectable to form parity groups of N+1 parallel connected disk drives to store data thereon. The N+1 disk drives are used to store the N segments of each data word plus a parity segment. In addition, a pool of backup disk drives is maintained to automatically substitute a replacement disk drive for a disk drive in a parity group that fails during operation.
摘要翻译： 本发明的磁盘驱动器存储器使用大量的小尺寸磁盘驱动器来实现模拟大尺寸磁盘驱动器的格式和能力的廉价的，高性能的，高可靠性的磁盘驱动器存储器。 多个磁盘驱动器可切换地互连以形成N + 1并联的磁盘驱动器的奇偶校验组，以在其上存储数据。 N + 1磁盘驱动器用于存储每个数据字的N个段加上一个奇偶校验段。 此外，维护备份磁盘驱动器池，以自动替换替换磁盘驱动器，使其在运行期间失败的奇偶校验组中的磁盘驱动器。
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公开(公告)号：US4757422A
公开(公告)日：1988-07-12
申请号：US906907
申请日：1986-09-15
CPC分类号： H01T23/00
摘要： A dynamically balanced ion generator is provided which incorporates a detection screen and feedback loop to ensure that the number of positive and negative ions emitted from the generator are substantially equal. The detection screen is located between the ion generating electrodes and the exit port of the device, and is contructed of conductive material which captures a predetermined percentage of ions emitted by the electrodes. The detected imbalance is corrected through a feedback loop comprising an operational amplifier circuit, a low pass filter, a balance control comparator, variable duty cycle oscillator. By varying the duty cycle of the variable duty cycle oscillator, the voltage applied to the primary of a high voltage transformer is controlled such that the relative concentrations of positive and negative ions generated may be altered to compensate for any detected imbalance.
摘要翻译： 提供了一种动态平衡的离子发生器，其包括检测屏和反馈环，以确保从发生器发射的正离子和负离子的数量基本相等。 检测屏位于离子发生电极和器件的出口之间，并且被构成为捕获由电极发射的预定百分比的离子的导电材料。 检测到的不平衡通过包括运算放大器电路，低通滤波器，平衡控制比较器，可变占空比振荡器的反馈回路来校正。 通过改变可变占空比振荡器的占空比，控制施加到高压变压器的初级的电压，使得可以改变所产生的正和负离子的相对浓度以补偿任何检测到的不平衡。
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