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I have an 84 disk powervault storage array, I have configured as a virtual (as opposed to linear) array, with the RAID method as ADAPT (versus linear array of raid-5 or raid-10. One volume spans the entire array, and I have it showing up as /dev/mpatha. The storage array is connected via scsi cable to host server running rhel-7.9.

Using the gnome disks gui I format that device using the XFS file system, and end up with 115TB of usable space, that I mount as /data to the powervault host server and then NFS expored and samba shared out, over 1gbps copper and 100gbps infiniband.

Realizing this sounds similar to a what file system should I choose question, given the above details is there a better file system choice over XFS out of what's available in RHEL 7.9 to choose from? More importantly, in the future as this thing gets 50% full (50TB !) are there any foreseeable problems... what should I watch out for or specifically not do? I do have a second identical powervault configured that will contain a backup copy of data on the first powervault.

ron
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    As far as file system selection goes, see big data + what is the right filesystem ext4 or xfs? – Stephen Kitt Aug 04 '22 at 11:52
  • The EXT4 file system can support volumes with sizes up to 1 exbibyte (EiB) and single files with sizes up to 16 tebibytes (TiB) with the standard 4 KiB block size; however the operating system support is different... Red Hat’s maximum supported size for Ext4 is 16TB in both Red Hat Enterprise Linux 5 and Red Hat Enterprise Linux 6, and 50TB in Red Hat Enterprise Linux 7. per redhat article 3129891 dated 9/4/2022. So good thing I chose XFS. Not sure what gnome disks would've done trying to format my 115tb volume as EXT4 under RHEL-7.9 – ron Aug 04 '22 at 14:50
  • Since you’re using RHEL, I’m assuming you care about having a supported system. – Stephen Kitt Aug 04 '22 at 14:51
  • I stopped caring, rhel support is a joke – ron Aug 04 '22 at 14:52

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