Method used to connect the storage device's controller enclosures and disk enclosures

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Visit the following website and refer to the networking assistant: http://support.huawei.com/onlinetoolsweb/sna/?language=en

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Protocol type used when controller enclosures and disk enclosures are cascaded using 6 Gbit/s mini SAS cables
Protocol type when controller enclosures and disk enclosures are cascaded using 6 Gbit/s mini SAS cables: The SAS protocol is used. The total rate reaches up to 4 x 6 Gbit/s, as each SAS channel consists of four PHYs and the rate of each PHY is 6 Gbit/s.

Whether a 2.5-inch disk enclosure and a 3.5-inch disk enclosure can be connected to the same loop
A 2.5-inch disk enclosure and a 3.5-inch disk enclosure cannot be connected to the same loop. They must be connected to different SAS ports.

What's the plan for configuring disk enclosures of V3 storage systems?
You can use eDesigner, a storage configuration tool to plan the configuration of V3 storage disk enclosures. To obtain eDesigner, click Link.

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