Invention Grant
US08775756B1 Method of verifying integrity of data written by a mainframe to a virtual tape and providing feedback of errors
有权
验证由主机写入虚拟磁带的数据的完整性并提供错误反馈的方法
- Patent Title: Method of verifying integrity of data written by a mainframe to a virtual tape and providing feedback of errors
- Patent Title (中): 验证由主机写入虚拟磁带的数据的完整性并提供错误反馈的方法
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Application No.: US13433477Application Date: 2012-03-29
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Publication No.: US08775756B1Publication Date: 2014-07-08
- Inventor: Larry W. McCloskey , Bruce Offhaus , Eric M. Vaughn
- Applicant: Larry W. McCloskey , Bruce Offhaus , Eric M. Vaughn
- Applicant Address: US MA Hopkinton
- Assignee: EMC Corporation
- Current Assignee: EMC Corporation
- Current Assignee Address: US MA Hopkinton
- Agency: Hamilton, Brook, Smith & Reynolds, P.C.
- Main IPC: G06F1/00
- IPC: G06F1/00 ; G06F13/00 ; G06F13/28 ; G06F7/00 ; G06F17/00 ; G06F3/06 ; G06F11/07 ; G06F12/00 ; G06F11/14 ; G06F17/30
Abstract:
A virtual tape emulator (VTE) that performs data integrity read back verification at host sync points. The VTE first flushes data that it may have buffered to a backend storage subsystem such as a disk array. The VTE then reads all data that was written to the backend storage array between a prior sync point and the current sync point. During this feedback verification, integrity checks can be performed. An error detected during read back verification is returned to the host operation that triggered the sync operation.
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