Data Storage Resynchronization Using Application Features

A method for data storage resynchronization, the method comprising:

• writing data to a primary page on a primary storage unit;
• writing said data to a secondary page on a secondary storage unit, wherein said secondary page corresponds to said primary page;
• comparing said corresponding primary and secondary pages;
• and
• copying said primary page to said secondary storage unit where page-change indicators of said corresponding pages do not match.

A method of mirrored storage analysis, the method comprising:

• creating two storage images of a data storage volume;
• comparing page-change indicators on corresponding pages on both of said images;
• and
• providing an indicator indicating where said page-change indicators of said corresponding pages do not match.

A method of incremental storage backup, the method comprising:

• creating a storage image of a data storage volume;
• comparing a page-change indicator on a page of said data storage volume with a page-change indicator of a corresponding page in said image;
• and
• storing said page of said data storage volume in a different backup or image where said page-change indicators do not match.