Re:Demystifying OpenZFS 2.0
by rsync on Thursday November 18, 2021 @05:07PM
(#29271243)
"You are correct -- I am in a niche area. I have less than 12 HDDs in a RAIDZ2 configuration. If I had more HDDs in the RAID I would see better write speeds."
That is incorrect.
RaidZ(x) vdev write speed is equal to the write speed of a single drive in the vdev.
If you want a raidZ zpool to have faster writes, you add a second vdev - that would double your write speed.
A wider vdev, on the other hand (15 or 18 drives, etc.) would not have faster write speeds.
That is incorrect.
RaidZ(x) vdev write speed is equal to the write speed of a single drive in the vdev.
If you want a raidZ zpool to have faster writes, you add a second vdev - that would double your write speed.
A wider vdev, on the other hand (15 or 18 drives, etc.) would not have faster write speeds.