> I also have some worries that existing file systems (say NTFS or XFS) will behave or perform well with millions of files. I believe the mantra for XFS is "if

> I also have some worries that existing file systems (say NTFS or XFS) will behave or perform well with millions of files. I believe the mantra for XFS is "if you have large or lots, use XFS". XFS has a lot of optimisations for metadata operations which should mean it's better than most filesystems for lots-of-files and large-files cases (Dave Chinner has given several talks about the performance characteristics of XFS with "large or lots" cases).