Method of verifying integrity of data written by a mainframe to a virtual tape and providing feedback of errors
US8775756B1 · kind B1 · utility
10Cited by
1References
17Claims
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Key dates
| Filing date | Mar 29, 2012 |
| Grant date | Jul 8, 2014 |
| Priority date | — |
| Expiry date | Oct 18, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/165
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.