A customer of mine is seeing a lot of these errors on ESX 4.1 as well as ESX 5.1. Some hosts are running on 4Gb FC, others on 8Gb FC. The hosts are connected to several VNXs and can't be related to a single VNX.

Does anyone have any ideas of what this can be? Thus far EMC as well as VMware have no clue what causes this.