I was reading a post from the FreeBSD forum user MadCATZ and a few questions comes to mind.
1) The 8-disk RaidZ3 is also bad?
2) What is the main significant of whole number Kb?
3) What is the expected performance difference between 6-disk RaidZ2 and 7-disk RaidZ3? Marginal to go to 7-disk Z3? Even noticeable by media server streaming to 2 high def devices (possibly 3 in the future).
https://forums.freebsd.org/viewtopic.php?&t=34558
3-disk RAID-Z = 128KiB / 2 = 64KiB = good
4-disk RAID-Z = 128KiB / 3 = ~43KiB = BAD!
5-disk RAID-Z = 128KiB / 4 = 32KiB = good
9-disk RAID-Z = 128KiB / 8 = 16KiB = good
4-disk RAID-Z2 = 128 / 2 = 64KiB
6-disk RAID-Z2 = 128 / 4 = 32KiB
8-disk RAID-Z2 = 128 / 6 = 21.3kiB = bad!
10-disk RAID-Z2 = 128 / 8 = 16KiB
4-disk RAID-Z3 = 128 / 1 = 128
5-disk RAID-Z3 = 128 / 2 = 64
7-disk RAID-Z3 = 128 / 4 = 32
8-disk RAID-Z3 = 128 / 5 = 25.6
11-disk RAID-Z3 = 128 / 8 = 16
16-disk RAID-Z3 = 128 / 13 = 9.8 = bad!
1) The 8-disk RaidZ3 is also bad?
2) What is the main significant of whole number Kb?
3) What is the expected performance difference between 6-disk RaidZ2 and 7-disk RaidZ3? Marginal to go to 7-disk Z3? Even noticeable by media server streaming to 2 high def devices (possibly 3 in the future).
https://forums.freebsd.org/viewtopic.php?&t=34558
3-disk RAID-Z = 128KiB / 2 = 64KiB = good
4-disk RAID-Z = 128KiB / 3 = ~43KiB = BAD!
5-disk RAID-Z = 128KiB / 4 = 32KiB = good
9-disk RAID-Z = 128KiB / 8 = 16KiB = good
4-disk RAID-Z2 = 128 / 2 = 64KiB
6-disk RAID-Z2 = 128 / 4 = 32KiB
8-disk RAID-Z2 = 128 / 6 = 21.3kiB = bad!
10-disk RAID-Z2 = 128 / 8 = 16KiB
4-disk RAID-Z3 = 128 / 1 = 128
5-disk RAID-Z3 = 128 / 2 = 64
7-disk RAID-Z3 = 128 / 4 = 32
8-disk RAID-Z3 = 128 / 5 = 25.6
11-disk RAID-Z3 = 128 / 8 = 16
16-disk RAID-Z3 = 128 / 13 = 9.8 = bad!