Quick performance question

[JohnFLi]

I'm creating a new volume for out multimedia department (photos and videos) file sizes range from 10 meg on up.
my question is about performance when they read and write these files. Would there be any performance difference if I made (3 vDevs of 6 drives) or (4 vDevs of 5 drives) for 1 volume? or would a different setup be better? I am using raidZ2. The Drives are 10 TB each

 

[Spearfoot]

I'm creating a new volume for out multimedia department (photos and videos) file sizes range from 10 meg on up.
my question is about performance when they read and write these files. Would there be any performance difference if I made (3 vDevs of 6 drives) or (4 vDevs of 5 drives) for 1 volume? or would a different setup be better? I am using raidZ2. The Drives are 10 TB each

IOPS scale with the number of vdevs in a pool, so your 4-vdev pool would have a slight advantage over the 3-vdev layout, but probably not enough that you'd really notice in the real world. The 3-vdev layout does have the advantage of being more space-efficient, sacrificing only 6 parity drives versus the 8 parity drives in a 4 x 5-drive RAIDZ2 pool.