gmirror on 1 or 2 IDE cables

[Ted Mittelstaedt]

>-----Original Message-----
>From: owner-freebsd-questions at freebsd.org 
>[mailto:owner-freebsd-questions at freebsd.org]On Behalf Of Steve Bertrand
>Sent: Thursday, November 03, 2005 7:28 AM
>To: gayn.winters at bristolsystems.com; freebsd-questions at freebsd.org
>Subject: RE: gmirror on 1 or 2 IDE cables
>
>
>
>> Using gmirror to mirror two identical drives, how much of a 
>> performance hit is it to have
>> 
>> 1.  Both drives on one IDE cable?
>> Compared to:
>> 2.  One drive primary on one cable and one secondary on the 
>> other cable?
>> Compared to:
>> 3.  Both drives primary but on separate IDE cables?
>
>My understanding that only a single drive on each IDE channel can be
>accessed at any one time.
>

Which may or may not matter depending on what he's doing.  Are we
talking mainly reads or writes here?

Ted