I'm in doubt about a couple of things, Veeam suggests the backups I/O is normally between 256/512KB, that means the stripe size of my raid array, be RAID-10 or RAID-5 for example should be larger than 256KB, right? I would assume the bigger the better for sequential writes as well?
Windows then formats a NTFS partition by default at 4k cluster size, and allows it to be up to 64KB (can't do higher, perhaps REFS will do?), so I also believe I should have this set up to 64KB as definitely we would not have small files with Veeam backups.
What do you guys think?