Controller Connection Ports and String Numbers

Factory configurations of the Oracle FS System adhere to specific connection guidelines. In the factory configuration, Drive Enclosures are distributed among all of the available strings. The number of available strings depends upon the number of SAS HBAs installed on the Controllers.

One SAS HBA

The following table shows the relationship between the connections on the Controllers with one SAS HBA installed and the distribution of Drive Enclosure strings.

Table 1 One SAS HBA per Controller
String Number	SAS HBA/PCIe slot	Port number on the SAS HBA
1	HBA 0/Slot 3	0
2	HBA 0/Slot 3	1

The following figure shows an example of a Controller with one SAS HBA.

Figure 1: One SAS HBA per Controller, string numbers, and port numbers

Legend

1 String 1, PCIe3 slot 3, SAS HBA port 0

2 String 2, PCIe3 slot 3, SAS HBA port 1

Two SAS HBAs

The following table shows the relationship between the connections on the Controllers with two SAS HBAs installed and the distribution of Drive Enclosure strings.

Table 2 Two SAS HBAs per Controller
String Number	SAS HBA/PCIe slot	Port number on the SAS HBA
1	HBA0/Slot 3	0
2	HBA 1/Slot 6	0
3	HBA 0/Slot 3	1
4	HBA 1/Slot 6	1

The following figure shows an example of a Controller with two SAS HBAs.

Figure 2: Two SAS HBAs per Controller, string numbers, and port numbers

Legend

1 String 1, PCIe3 slot 3, SAS HBA port 0	3 String 3, PCIe3 slot 3, SAS HBA port 1
2 String 2, PCIe3 slot 6, SAS HBA port 0	4 String 4, PCIe3 slot 6, SAS HBA port 1

Three SAS HBAs and String Numbers

The following table shows the relationship between the connections on the Controllers with three SAS HBAs installed and the distribution of Drive Enclosure strings.

Table 3 Three SAS HBAs per Controller
String Number	SAS HBA/PCIe slot	Port number on the SAS HBA
1	HBA 0/Slot 3	0
2	HBA 1/Slot 6	0
3	HBA 2/Slot 2	0
4	HBA 0/Slot 3	1
5	HBA 1/Slot 6	1
6	HBA 2/Slot 2	1

The following figure shows the relationship between the Controller connection ports with three SAS HBAs.

Figure 3: Three SAS HBAs per Controller, string numbers, and port numbers

Legend

1 String 1, PCIe3 slot 3, SAS HBA port 0	4 String 4, PCIe3 slot 3, SAS HBA port 1
2 String 2, PCIe3 slot 6, SAS HBA port 0	5 String 5, PCIe3 slot 6, SAS HBA port 1
3 String 3, PCIe3 slot 2, SAS HBA port 0	6 String 6, PCIe3 slot 2, SAS HBA port 1