Cross volume link format considerations
When choosing which type of cross volume link to use, the following are important considerations:
- Files migrated to storage devices attached to remote servers (remote migrations) always use enhanced cross volume links.
- Files migrated locally (to storage attached to the same EVS) can use original cross volume links or enhanced cross volume links, but enhanced cross volume links are used by default.
- If the file system has files that were migrated in previous releases, original cross volume links should be used, because original and enhanced cross volume links cannot be mixed within the same file system. You can, however, convert original cross volume links to enhanced cross volume links using the cvl-convert command.
- If migrations are being performed on this file system for the first time, you should use enhanced cross volume links.
- Cross volume links (CVL-2 links) occupy one block in the file system, that is, 32 KiB if the file system is formatted using that block size, otherwise the file system block size is 4 KiB.
Refer to the Backup Administration Guide for configuration details of the backup and restore of migrated data.