I had always thought that with mpxio, it load-balances IO request across your storage ports but this article http://christianbilien.wordpress.com/2007/03/23/storage-array-bottlenecks/ has got me thinking its not true.
"The available bandwidth is 2 or 4Gb/s (200 or 400MB/s – FC frames are 10 bytes long -) per port. As load balancing software (Powerpath, MPXIO, DMP, etc.) are most of the times used both for redundancy and load balancing, I/Os coming from a host can take advantage of an aggregated bandwidth of two ports. However, reads can use only one path, but writes are duplicated, i.e. a host write ends up as one write on each host port. " Is this true? -- This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
