Verify SAN Disk

Luxadm is an utility, which discovers FC devices (luxadm probe).
# luxadm probe
No Network Array enclosures found in /dev/es

Found Fibre Channel device(s):
Node WWN:200600a0b829a7a0 Device Type:Disk device
Logical Path:/dev/rdsk/c4t600A0B800029A7A000000DC747A8168Ad0s2

I then run a luxadm on the device. Below you can see that I do indeed have two paths to the device.
1 controller = one path, 2 controllers = 2 paths

# luxadm display /dev/rdsk/c4t600A0B800029A7A000000DC747A8168Ad0s2
DEVICE PROPERTIES for disk: /dev/rdsk/c4t600A0B800029A7A000000DC747A8168Ad0s2
Vendor: SUN
Product ID: CSM200_R
Revision: 0619
Serial Num: SG71009283
Unformatted capacity: 12288.000 MBytes
Write Cache: Enabled
Read Cache: Enabled
Minimum prefetch: 0x1
Maximum prefetch: 0x1
Device Type: Disk device
Path(s):

/dev/rdsk/c4t600A0B800029A7A000000DC747A8168Ad0s2
/devices/scsi_vhci/ssd@g600a0b800029a7a000000dc747a8168a:c,raw
Controller /devices/pci@1f,4000/SUNW,qlc@5,1/fp@0,0
Device Address 203700a0b829a7a0,1
Host controller port WWN 210100e08bb370ab
Class secondary
State STANDBY
Controller /devices/pci@1f,4000/SUNW,qlc@5/fp@0,0
Device Address 203600a0b829a7a0,1
Host controller port WWN 210000e08b9370ab
Class primary
State ONLINE

-Check the state is online

for more details got to http://devnull.typepad.com/devnull/