if checking status of a device, it shows some paths in asb:iopf dead, that is cause due to an error in the SAN network, that affect the path shwoing this status.
root@solaris :/root # powermt display dev=emcpower2a
Pseudo name=emcpower2a
Symmetrix ID=000445501078
Logical device ID=3714
state=alive; policy=SymmOpt; queued-IOs=0
==============================================================================
————— Host ————— – Stor – — I/O Path — — Stats —
### HW Path I/O Paths Interf. Mode State Q-IOs Errors
==============================================================================
3078 pci@700/pci@2/pci@0/pci@3/pci@0/pci@3/SUNW,emlxs@0,1/fp@0,0 c9t5000097500016D1Dd10s0 FA 8eB asb:iopf dead 0 38
3076 pci@600/pci@1/pci@0/pci@4/pci@0/pci@3/SUNW,emlxs@0,1/fp@0,0 c5t5000097500016D19d10s0 FA 7eB active alive 0 6
3072 pci@600/pci@1/pci@0/pci@4/pci@0/pci@3/SUNW,emlxs@0/fp@0,0 c4t5000097500016D19d10s0 FA 7eB active alive 0 3
3075 pci@700/pci@2/pci@0/pci@3/pci@0/pci@3/SUNW,emlxs@0/fp@0,0 c8t5000097500016D1Dd10s0 FA 8eB asb:iopf dead 0 29
Normally it affects not only one path, but all related to all paths related to the same SAN zoning.
root@solaris :/root # powermt display dev=all| grep -i iopf
3075 pci@700/pci@2/pci@0/pci@3/pci@0/pci@3/SUNW,emlxs@0/fp@0,0 c8t5000097500016D1Dd6s0 FA 8eB asb:iopf dead 0 29
3078 pci@700/pci@2/pci@0/pci@3/pci@0/pci@3/SUNW,emlxs@0,1/fp@0,0 c9t5000097500016D1Dd6s0 FA 8eB asb:iopf dead 0 49
3078 pci@700/pci@2/pci@0/pci@3/pci@0/pci@3/SUNW,emlxs@0,1/fp@0,0 c9t5000097500016D1Dd11s0 FA 8eB asb:iopf dead 0 45
3075 pci@700/pci@2/pci@0/pci@3/pci@0/pci@3/SUNW,emlxs@0/fp@0,0 c8t5000097500016D1Dd11s0 FA 8eB asb:iopf dead 0 17
3078 pci@700/pci@2/pci@0/pci@3/pci@0/pci@3/SUNW,emlxs@0,1/fp@0,0 c9t5000097500016D1Dd12s0 FA 8eB asb:iopf dead 0 42
3075 pci@700/pci@2/pci@0/pci@3/pci@0/pci@3/SUNW,emlxs@0/fp@0,0 c8t5000097500016D1Dd12s0 FA 8eB asb:iopf dead 0 31
3078 pci@700/pci@2/pci@0/pci@3/pci@0/pci@3/SUNW,emlxs@0,1/fp@0,0 c9t5000097500016D1Dd13s0 FA 8eB asb:iopf dead 0 58
you can check which empower devices are affected and run the below command one by one.
root@solaris :/root # powermt set mode=active dev=emcpower2 force root@solaris :/root # powermt set mode=active dev=emcpower3 force root@solaris :/root # powermt set mode=active dev=emcpower4 force