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Serial ATA technology, 4th edition

ManualsBrandsHP ManualsComputer AccessoriesHP Smart Array E200/128 BBWC 2-ports Int PCIe x4 SAS Controller
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Figure 6: Internal drives connect directly to a controller.
External
Figure 7 shows a topology for connecting a 4-lane-wide port on a controller to an external storage enclosure. This
storage enclosure example contains an internal 36-port expander that supports cascading an additional enclosure
in a 1+1 configuration.
Figure 7: This external port topology can support cascading to an additional enclosure.
Dual-path SATA implementations use a single-domain method of providing tolerance to cable failure. Dual paths
can prevent a single point of failure in complex enterprise configurations such as cascaded JBODs. This