Cabling Mixed DE3-24 and DE2-24 Disk Shelves to ZS4-4 Controllers
Refer to the diagrams in this section to upgrade a system DE2-24 disk shelves by introducing one or more DE3-24 disk shelves. In the following diagrams, the DE2-24 disk shelves have three I/O Module ports, while the DE3-24 disk shelves have four ports. See Cabinet and Cabling Guidelines for disk shelf intermixing guidelines.
Note - Adding DE3-24 disk shelves uses SAS-3 cabling, but retains the SAS-2 legacy cabling methodology. Replacing SAS-2 HBAs with SAS-3 HBAs does not affect cabling interconnect.
Upgrade - Replace DE2-24 with DE3-24 at Disk Chain End
Figure 459 Clustered ZS4-4 controllers with two HBAs connected to one DE3-24 and three DE2-24 in two chains
Upgrade - Replace DE2-24 with DE3-24 in Disk Chain Middle
Figure 460 Clustered ZS4-4 controllers with three HBAs connected to one DE3-24 and six DE2-24 in three chains
Upgrade - Add Exclusive DE3-24 Disk Chain
Figure 461 Clustered ZS4-4 controllers with four HBAs connected to two DE3-24 and six DE2-24 in four chains
