IBM DS6000 Series manual Indicators, Cabling

Figure 2-13 DS6000 expansion enclosure SBOD controller card

Indicators

On the right-hand side, contained in an orange box, each SBOD controller card has two status indicators located below a chip symbol. The upper indicator is green and indicates that the SBOD controller card is powered on. The lower indicator is amber and indicates that this SBOD controller requires service.

Cabling

Examples of how the expansion enclosures are cabled are shown in Figure 2-14and Figure 2-15 on page 37.

In Figure 2-14,the server enclosure has two expansion enclosures attached to the disk exp loop (loop 0). The server enclosure itself is the first enclosure on loop 0. The upper controller in the server enclosure is cabled to the upper SBOD card in the expansion enclosure. The lower controller is cabled to the lower SBOD card. In each case cables run from the disk exp ports to the in ports of the SBOD card. A second expansion enclosure has been added by running cables from the out ports on the first expansion enclosure to the in ports on the second expansion enclosure. At the bottom of the diagram, dotted lines indicate the potential cabling to add more expansion enclosures to that loop.

Cables from disk exp ports on Server enclosure to extend loop 0

First expansion enclosure on loop 0

(second enclosure on loop 0)

Second expansion enclosure on loop 0

(third enclosure on loop 0)

Figure 2-14 Expansion enclosure cabling (Disk Exp ports on loop 0)

In Figure 2-15,the server enclosure has two expansion enclosures attached to the disk contrl loop (loop 1). The first expansion enclosure plugged into the disk contrl ports is the first enclosure on loop 1. The cabling from the server enclosure to the first expansion enclosure on this loop is slightly different. Each controller attaches to both SBOD cards, which is why

36DS6000 Series: Concepts and Architecture