Sun comparing ZFS and EXT3

RockDoctor writes: Sun have been sending out links to a whitepaper comparing their ZFS file system with the more widely-distributed EXT3 file system. Bearing in mind the source (Sun), they find that

• Solaris ZFS outperforms the ext3 file system in tests that represent the storage and data requests typically made by database, mail server, and Web applications.
• The various ext3 file system mount options available require making a trade-off between data integrity and performance — creating implications for environments in which continuous access to data is critical. Such trade-offs are not necessary in Solaris ZFS.

Sun are touting particularly that ZFS can be administered more simply than other filesystems, not requiring significant downtime for operations such as formatting a new volume and integrating it into a storage pool, and automating operations that could threaten data integrity. (I am not a Sun person, and can't vouch one way or the other for the relevance of the results cited.)