I'm having a RAID5 array of about 40TB in size. A separate RAID controller card handles the disks. I'm planning to use the normal ext4 file system. It's standard and well known, most probably not the fastest though. That will not have any great impact, as there is a 4TB NVMe SSD drive, which takes the odd of the slow physical disk performance.

Hi,

I'd recommend if you're going to use RAID that you at least use a RAID-6 configuration.  You don't want to risk losing all your backups if you have a drive fail and then during the rebuilding of the RAID-5, you happen to have another drive failure/error.

cheers,

--tom




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