Ever since the dawn of time the storage administrators have been indoctrinated with redundancy. You have to have everything at least twice in order to maintain uptime and be able to achieve this to a level of around 99,999%. This is true in many occasions however there are exceptions when even dual fabrics (ie physically separated) share components like hosts, arrays or tapes.. If a physical issue in one fabric is impacting that shared component the performance and host IO may even impact totally unrelated equipment on another fabric and spin out of control.
Tag CloudBNA bottleneckmon brocade buffer credits cisco cloud data centre decoding disk encoding errors Ethernet event fabric fabrics FabricWatch FCoE fibre channel fillwords fill words firmware FOS future hba HDS Hitachi isl linux maintenance management MAPS microsoft open source optical performance resilient security SFP storage support switches T10 T11 VMware zoning