They aren't dual ported.  I have (8) 3580 LTO drives FC-AL attached.  I 
have (2) McData ES-1000 switches with 4 drives on each switch.  The 
library control path is currently through DRIVE 1.  I am actually looking for 
failover of the Library (/dev/smc0), in case of failure of drive 1 or the 
McData switch it's on.  I can configure a second control path (in fact I have 
done this on drive 5 and it comes up on AIX as /dev/smc1, but I am not 
using it).

As I read the readme on Atape it seemed the auto failover was what would
handle this, but it says only for 3590 devices.

The library has hot swap drives, but if drive1 failed or needs to be replaced
I have some amount of downtime that I wouldn't have with the other drives.

David Longo

>>> seay_pd AT NAPTHEON DOT COM 02/26/02 04:15PM >>>
Are the 3584 drives dual ported?