For an active-passive dual-ported FC disk array:1. What can cause switchover besides the failure of active controller? Login to the port, any SCSI commands or only read/write commands? Can you give me some product names, if any, in each category? 2. What is the granularity of the active-passive on the whole array or on each disk (i.e., port 1 is active for disk 1 but passive for disk 2 and port 2 is active for disk 2 but passive for disk 1)? Or, do ports have to be either the active or passive for the whole array?
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This was first published in July 2003