The following example shows the steps for adding a fifth Drive Enclosure to an existing string.
In this example, the string connects to SAS HBA port 0 on the Controller nodes. Depending on the string number and the configuration of the Controllers in your system, the string connects to SAS HBA port 0 or SAS HBA port 1 on the Controller nodes.
- Using a mini-SAS to mini-SAS cable, connect one end of the cable to I/O module 0, port 2 on the third Drive Enclosure (DE 3) in the string.
- Connect the other end of the cable to I/O module 0, port 0 on the fifth Drive Enclosure (DE 5).
- Using a mini-SAS to mini-SAS cable, connect one end of the cable to I/O module 1, port 2 on DE 3.
- Connect the other end of the cable to I/O module 1, port 0 on DE 5.
Figure 1: Connections for fifth Drive Enclosure in string
- Legend
1 I/O module 0, port 2 on DE 3 3 I/O module 1, port 2 on DE 3 2 I/O module 0, port 0 on DE 5 4 I/O module 1, port 0 on DE 5
- From a command line, issue fscli topology —list —violations.If there are topology violations, correct them prior to proceeding.
- Ensure that the cables do not obstruct access to the replaceable units in the Drive Enclosure and the Controllers.