公开(公告)号：US5528755A

公开(公告)日：1996-06-18

申请号：US995092

申请日：1992-12-22

申请人： Brent C. Beardsley ,  Michael T. Benhase ,  Susan K. Candelaria ,  Joel H. Cord ,  Michael H. Hartung ,  Bruce M. Henry ,  Paul Hodges ,  Paul L. Leung ,  Robert W. Shomler

发明人： Brent C. Beardsley ,  Michael T. Benhase ,  Susan K. Candelaria ,  Joel H. Cord ,  Michael H. Hartung ,  Bruce M. Henry ,  Paul Hodges ,  Paul L. Leung ,  Robert W. Shomler

IPC分类号： G06F11/00 ,  G11C29/00 ,  G06F11/34 ,  G06F7/06

CPC分类号： G11C29/88 ,  G06F11/004

摘要： Often in DASD subsystems, circumstances can occur which prevent the full transfer of the required data from channel to subsystem during a write operation. The disclosed methods prevents this data from later being read and treated as valid data by the host processor. This is achieved by marking data as invalid within the storage subsystem once it is determined that a channel error has occured. Subsequently, upon reading that data, the host processor can be made aware of the data invalidity and treat the data accordingly. In a second embodiment, invalid data is discarded rather than stored over the previous valid version of the data, before it is ever stored on DASD.

摘要翻译： 通常在DASD子系统中，可能会发生这种情况，从而阻止在写入操作期间将所需数据从通道全部传输到子系统。 所公开的方法防止该数据稍后被主机处理器读取并被视为有效数据。 一旦确定出现通道错误，就可以在存储子系统内将数据标记为无效来实现。 随后，在读取该数据时，可以使主机处理器知道数据无效并相应地处理数据。 在第二实施例中，在将数据存储在DASD之前，无效数据被丢弃而不是先于数据的有效版本存储。