Looks like the path to the storage that the host is using is down or offline and its trying to failover to another path.
2013-09-13T00:16:37.428Z cpu0:8705)WARNING: NMP: nmpCompleteRetryForPath:348:Retry cmd 0x12 (0x4124403c1d40) to dev "naa.60060160e7311b00c4fe11f33544df11" failed on path "vmhba1:C0:T0:L4" H:0x1 D:0x0 P:0x0 Possible sense data: 0x5 0x24 0x0.
H:0x1 represents No connect.
It is ti with failover multipathing sequence. check out this KB article