On Wed, Jul 24, 2013 at 01:59:03PM -0400, John Lauro wrote:
> What is recommended for a large file system (40TB) under SL6?
> 
> In the past I have always had good luck with jfs.  Might not be the
> fastest, but very stable.  It works well with being able to repair
> huge filesystems in reasonable amount of RAM, and handle large
> directories, and large files.  Unfortunately jfs doesn't appear to be
> supported in 6?  (or is there a repo I can add?)
> 
> 
> Besides for support of 40+TB filesystem, also need support of files
> >4TB, and directories with hundreds of thousands of files.  What do
> >people recommend?

Echoing what others have said, sounds like XFS might be the best option
if you can find a repository with a quality version (EPEL perhaps?)

Interesting on the Backblaze and ext4 thing.  While ext4 itself may
support this larger file system size, I'm not sure if the "default"
ext4tools will??  Could be a risk to investigate if you go this route.

Other options I can think of:

- btrfs (not sure if something like EPEL provides a release with this)
- ZFS on Linux (for the adventurous only, but I believe they have a
  version that works well with RHEL).

Personally, I'd go XFS.

Ray