Overview of ZS4-4 Racked System Capacity Configurations
Capacity configurations take advantage of high-capacity disk shelves and are available in a base cabinet, or a base cabinet with up to two expansion cabinets. Two ZS4-4 controllers and up to 28 Oracle Storage Drive Enclosure DE2-24C disk shelves can be supported, as shown in the following table.
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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. Four SAS HBA cards must be installed in each ZS4-4 controller to support disk shelves in the expansion cabinet(s).
Clustered ZS4-4 controllers that contain four SAS HBAs each support a high-availability configuration consisting of:
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Four chains of two disk shelves per disk chain in the base cabinet for a total of eight disk shelves, and
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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 cabinets are self-contained and pre-cabled following the required cabling methodology. Pre-racked system cabling tables and diagrams, which can also be used for planning future system expansion, are provided in the section Cabling Tables and Diagrams for ZS4-4 Racked System Capacity Configurations.
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 727 ZS4-4 Controller 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 728 DE2-24C Disk Shelf HBA Connections (Back View)
