A disk storage system has high throughput between a disk adapter of a disk controller
and a disk array. The disk adapter of the disk controller is connected to the disk
array through switches. Data on a channel between the switch and a RAID group is
multiplexed in the switch to be transferred onto a channel between the switch and
the disk adapter and data on the channel between the switch and the disk adapter
is demultiplexed in the switch to be transferred onto the channel between the switch
and the RAID group. A data transfer rate on the channel between the disk adapter
and the switch is made higher than that on the channel.
