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Does the HP P9500 do any sort of block level data integrity checking on reads?

If so, I'm looking for actual documentation that it does indeed do such a thing.

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The P9000 Database Validator implements Oracle's HARD framework which can validate the Oracle block structure, block integrity, and block location with numerous checks (more info).

Database Validator provides the P9500 Disk Array with an added level of data protection when deployed in Oracle database environments. Implementing Oracle's Hardware Assisted Resilient Data (HARD) framework, it detects and corrects potential data corruption introduced in the data I/O path and helps customers avoid unplanned downtime. It can be deployed in HP UX/LVM and Sun Solaris/VxVM environments. It is also supported in MC/ServiceGuard for HP UX environments. When implemented in a complete Oracle HARD/P9500 Disk Array solution, Database Validator works in conjunction with Oracle HARD enabled databases to ensure that possible data corruptions emanating from the connectivity path between the server and the P9500 are detected and rejected before they are committed to storage. If an invalid/corrupt I/O is detected, Database Validator rejects the I/O and reports the rejection to server and requests I/O retransmission. At the same time, a SIM event message is passed to c track for remote notification. Database Validator works in combination with other P9500 hardware and software to provide a complete Oracle HARD implementation.

Read more at the P9500 QuickSpecs PDF (page 28) here

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Handy to know, but this doesn't actually answer the question. This handles the data path in between Oracle and the storage array. – MikeyB Sep 29 '11 at 13:18

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