How do I recover a file or directory from a filesystem snapshot?
During Fall 2006, we migrated user home directories, and selected other filesystems, to the advanced Sun Solaris 10 Zettabyte File System (ZFS) . Among its many features not previously available in our older Unix filesystems is the ability to take read-only snapshots that record the state of the filesystem at a particular time. Subsequent changes to, or deletions of, files and directories, do not affect existing snapshots, so in most cases, users can now easily recover earlier versions of their data without the need to request systems staff to restore them from nightly backups.
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