CONFIRMING DATA CONSISTENCY IN A DATA STORAGE ENVIRONMENT

摘要

A method for confirming replicated data at a data site, including utilizing a hash function, computing a first hash value based on first data at a first data site and utilizing the same hash function, computing a second hash value based on second data at a second data site, wherein the first data had previously been replicated from the first data site to the second data site as the second data. The method also includes comparing the first and second hash values to determine whether the second data is a valid replication of the first data. In additional embodiments, the first data may be modified based on seed data prior to computing the first hash value and the second data may be modified based on the same seed data prior to computing the second hash value. The process can be repeated to increase reliability of the results.

主权项

1. A method for confirming the validity of replicated data at a data storage site, the method comprising:
a) utilizing a hash function, computing a first hash value based on first data at a first data storage site, the first hash value being smaller in size than the first data; b) utilizing the same hash function, computing a second hash value based on second data at a second data storage site, the first data having been previously replicated from the first data storage site to the second data storage site as the second data, and the second hash value being smaller in size than the second data; and c) comparing the first and second hash values to determine whether the second data is a valid replication of the first data, wherein a mismatch between the first and second hash values indicates that at least one of the first or second data storage sites includes invalid data.