Disk problems?

[Jack Barnett]

I have a 3ware (AMCC) 9500S-4LP RAID card and 4 disks in 2 Mirror 1 arrays:
Unit 1: 2 x 80 gigs
Unit 2: 2 x 400 gigs

Under windows this was working fine.  Both disks where "healthy" and running
(I could test this by unplugging one or the other):

Under FreeBSD though, it says it's not working:
May  7 13:57:37 fire kernel: twa0: INFO: (0x04: 0x000B): Rebuild started:
unit=0
May  7 13:57:37 fire kernel: twa0: INFO: (0x04: 0x000B): Rebuild started:
unit=1
May  7 13:57:48 fire kernel: twa0: ERROR: (0x04: 0x003A): Drive power on
reset detected: port=0

The rebuild message is fine, but keeps getting "Drive power on reset
detected: port=0"

In the 3ware BIOS, it shows all drives as "active" (ie. powered on and
connected), so don't know why the kernel thinks it's powered down?  Does it
mean something else?

If I just "wait" for about 20 minutes, the drives start rebuilding:

Unit  UnitType  Status         %RCmpl  %V/I/M  Stripe  Size(GB)  Cache
AVrfy
------------------------------------------------------------------------------
u0    RAID-1    REBUILDING     37      -       -       74.4951   OFF    OFF
u1    RAID-1    REBUILDING     13      -       -       372.519   OFF    OFF


(it's in Unit one above, 37% complete).  So even though it's getting this
"Drive power on reset detected" it eventually rebuilds it's self. ?

Any ideas what this message means?  I thought it was an error, but seems
fine since it's rebuilding it's self. ?

Thanks.