Would running multiple instances of rsync with all the sources and destinations on different direct-attached storage devices cause any performance hits, or would the speed limits for each individual rsync transfer be due only to the read/write speeds of the direct-attached storage devices within the individual rsync commands themselves?
For instance, suppose I want to transfer:
Camera Card 1 to Direct-Attached Hard Drive 1
Camera Card 2 to Direct-Attached Hard Drive 2
If I run these rsync commands simultaneously, will the two rsync instances slow each other down, or will the speed limit for each individual instance still just be whatever the slowest device read/write speed is within each rsync instance?
Assume that the device interfaces are not bottlenecks.