Cabling Mixed DE3-24 and DE2-24 Disk Shelves to ZS5-4 Controllers
Refer to the diagrams in this section to upgrade or add to a system with 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.
Add a DE3-24 to DE2-24 Disk Shelves at Chain End
In this example, a DE3-24 (right chain, first disk shelf) is added to a single DE2-24 disk shelf chain. Left chain is not changed.
Figure 453 Clustered ZS5-4 controllers with two HBAs connected to one DE3-24 (right chain, first disk shelf) and three DE2-24 in two chains
Add/Replace DE3-24 to/from DE2-24 Disk Shelves at Chain Middle
In this example, a DE3-24 (right chain, second disk shelf) is added/replaced to/from a DE2-24 disk shelf chain in the middle. Remaining two chains on the left are not changed.
Figure 454 Clustered ZS5-4 controllers with three HBAs connected to one DE3-24 (right chain, second disk shelf) and six DE2-24 in three chains
Add Exclusive DE3-24 Disk Shelves Chain
In this example, a chain of two DE3-24 (right chain) is added. Remaining three chains on the left are not changed.
Figure 455 Clustered ZS5-4 controllers with four HBAs connected to two DE3-24 (right chain) and six DE2-24 in four chains
