Overview of Oracle ZFS Storage Appliance Racked System ZS4-4

The Oracle ZFS Storage Appliance Racked System ZS4-4 is a pre-racked and pre-cabled system comprising two clustered ZS4-4 controllers and up to eight DE2-24C disk shelves in the base cabinet. Up to two expansion cabinets with up to 10 DE2-24C disk shelves each can be connected to the base cabinet, for a total of 28 disk shelves.

Configurations are offered in multiples of two disk shelves, as well as half-rack expansion: 2 disk shelves (minimum), 4, 6, 8, 10, 12, 13 (half rack), 14, 16, 18, 20, 22, 23 (half rack), 24, 26, and 28 (maximum). Each ZS4-4 controller supports two, three, or four SAS HBA cards. However, four SAS HBA cards must be installed in each ZS4-4 controller to support disk shelves in the expansion cabinet(s).

If the clustered ZS4-4 controllers contain four SAS HBAs each, they support a high-availability configuration of:

• Four chains of two disk shelves per disk chain in the base cabinet for a total of eight disk shelves, and

• One to two expansion cabinets, each cabinet supporting two chains with a maximum of five disk shelves per disk chain, for a total of 10 disk shelves for one expansion cabinet or 20 disk shelves for two expansion cabinets.

The base cabinet is self-contained and pre-cabled following the required cabling methodology. The section "Cabling Tables and Diagrams" describes how pre-racked systems are cabled, as well as how to expand your system in the future.

Each cabinet contains 42 rack units (RUs), with RU01 on the bottom. Each ZS4-4 controller occupies three rack units, and its location is referenced by the bottommost rack unit number. The top controller is referred to as Controller 1 and is located in RU20 in the base cabinet, and the bottom controller is Controller 0 in RU17. The following figure shows the slot number for each HBA card, as well as the port numbers in each card.

Figure 645  ZS4-4 HBA Slot Numbers (Back View)

Each DE2-24C disk shelf occupies four rack units, and disk shelves are racked from the bottom of the cabinet to the top for stability. Therefore, the first disk shelf is in RU01, the second in RU05, and so on. As shown in the following figure, the DE2-24C disk shelf has two I/O Modules (IOMs) with three ports each. Controller 1 uses Port 0, and Controller 0 uses Port 2. In all cabling configurations, Port 1 is never used.

Figure 646  DE2-24C HBA Connections (Back View)