Thx for the extra info on the block sizes and the way zfs writes to the disks.
Maybe you could answer some of my questions I have about zpool and vdevs.
Is my assumption correct that a zpool with 1 vdev has the same throughput (measured with dd) as a zpool with the same amount of disks, but using 2 or more vdevs?
If my assumption on throughput is correct and more vdevs means more IOPS, what is the benefit of more IOPS? Is it mainly for systems with a lot of concurrent users? Does iSCSI performance increases with more IOPS?
And how can you measure the IOPS of a zpool?
Maybe you could answer some of my questions I have about zpool and vdevs.
Is my assumption correct that a zpool with 1 vdev has the same throughput (measured with dd) as a zpool with the same amount of disks, but using 2 or more vdevs?
If my assumption on throughput is correct and more vdevs means more IOPS, what is the benefit of more IOPS? Is it mainly for systems with a lot of concurrent users? Does iSCSI performance increases with more IOPS?
And how can you measure the IOPS of a zpool?