SCSI Controller Question

[Wayne]

Hey Guys,

Not entirely FreeBSD specific, but I was hoping someone could help with 
a question about SCSI controllers.

One FreeBSD system here is running drives on an old Adaptec 2940 
controller.  I would like to upgrade the controller, as the drives are 
actually Ultra 160 capable.  Can you normally just swap SCSI drives onto 
a different controller, and still access all the data?  (like with IDE) 
  Or will I need to dump & restore, also?

   -Thanks,  Wayne