Apparatus for detecting mismatches in a mirror volume, system, and method (apparatus for detecting a mismatch in a continuous remote copy using the metadata, system, and method)

摘要

Apparatus for detecting a mismatch mirror volume, the system and method is disclosed. Receiving module receives a start indicator from the primary storage system. Start indicator includes a start position of the first block to be modified on a track of the secondary storage system. The first block corresponding to the first block of the same position of the modified record of the primary storage system. Track of the secondary storage system, including irregular count-key-data ("CKD") each track and the primary storage system. The comparison module, I is compared with the block position listed in track metadata block the first position indicated by the start indicator. Track metadata describes the user record of irregular CKD track on the secondary storage system. In response to the first block is not aligned with the start block of the record in the secondary storage system on alarm module generates an alarm. [Selection] Figure Figure 1