Connecting P6500 EVA controllers to the disk enclosures (2C6D)
Y-cables (see Figure 52 (page 63)) are used to connect the P6500 and enable each controller port
to act as two ports. The Y-cables provide connectivity to each SAS domain (indicated as DP-1 and
DP-2 on the cables in the diagrams). The short end (P0 in Figure 52 (page 63)) is the input to a
controller port. Each long end (P1 and P2) is an output to a disk enclosure port. Each individual
connectivity point from the Y-cable is the start of a SAS domain (P1 and P2 in Figure 52 (page
63)).
Figure 52 P6500 Y-cable
2. Port number label1. Pull tab (may also be a release bar)
1. Divide the disk enclosures into two groups. The first group contains the disk enclosures below
the controller enclosure (domain DP-1); the second group contains the disk enclosures above
the controller enclosure (domain DP-2).
2. Connect the top and bottom disk enclosures in each SAS domain. As shown in Figure 53 (page
64), there are two redundant paths in each SAS domain. In SAS domain DP-1, the first
redundant path is port P1 of I/O module A on the top disk enclosure and port P2 of I/O
module A on the bottom disk enclosure. The second redundant path is P1 of I/O module B
on the top disk enclosure and P2 of I/O module B on the bottom disk enclosure. The same
redundant paths are made in SAS domain DP-2.
Connecting P6500 EVA controllers to the disk enclosures (2C6D) 63
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