Re: mirror vdevs with different sizes

On 3/25/22 10:05 AM, Martin Simmons wrote:
> Is "the new disks will have a lower ratio of IOPS/TB" another way of saying
> "more of the data will be stored on the new disks, so they will be accessed
> more frequently"?  Or is this something about larger vdevs in general?

A disk can handle a certain number of IOPS, regardless of capacity 
(typically around 200 for spinning disks).  Bigger disks will inherently 
have a lower ratio of IOPS/TB meaning you're not going to get the same 
level of overall performance with them.  For example, if you have 2 1T 
drives, you have 400 IOPS available to access all of those 2 TB, whereas 
if you have 1 2T drive, you only have 200 IOPS available.