Systems and methods for striped storage migration

A storage system, comprising:

• a first storage disk having data blocks;
• and
• a second storage disk communicatively connected to the first storage disk and having data blocks, wherein the second storage disk comprises
• a first progress indicator configured for determining whether one of the data blocks of the first storage disk has correctly migrated to one of the data blocks of the second storage disk, and
• a second progress indicator configured for determining whether a group of the data blocks of the first storage disk has completed migrating to
• the second storage disk, wherein migration of the data blocks can resume in the event of a migration interruption based on the first and the second progress indicators.

A system for expanding capacity in a storage system, comprising:

• a migrator communicatively connected to a first disk and to a second disk and configured for migrating groups of data blocks among the first disk and the second disk, wherein each group comprises a predetermined number of data blocks;
• and
• an updater communicatively connected to the migrator and configured for updating a first progress indicator of the second disk in response to completion of migration of each group, wherein an updated said first progress indicator indicates completed said groups of data blocks,
• wherein the migrator is adapted to generate a second progress indicator used to determine correctly migrated data blocks such that the migrator may resume migration of said groups of data blocks after a migration interruption according to the first and the second progress indicators.