Hi All, I was thinking of using ext4 on a new raid system of 20TB. I had read the article (halfway done the page) titled "Linux File System Fsck Testing -- The Results Are In" https://www.ultimateeditionoz.com/forum/viewtopic.php?p=26180 They used CentOS 5.7 (2.6.18-274 kernel) and they state "The stock configuration was used throughput the testing except for one component. The e2fsprogs package was upgraded to version 1.42, enabling ext4 file systems larger than 16TB to be created." I have looked for an "el6" version of "e2fsprogs 1.42" with no joy. Any ideas anyone? Cheers, Steve