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Oracle® ZFS Storage Appliance Customer Service Manual
For ZS3-x, 7x20 Controllers, and DE2-24, Sun Disk Shelves
The chassis has the following boards installed.
PCIe Risers: Each riser supports two PCIe cards that are customer-replaceable. There are two risers per system, each attached to the rear of the motherboard.
Motherboard: The motherboard is a FRU and includes CPU modules, slots for 18 DIMMs, memory control subsystems, and the service processor (SP) subsystem. The SP subsystem controls the host power and monitors host system events (power and environmental). The SP controller draws power from the host 3.3V standby supply rail, which is available whenever the system is receiving AC input power, even when the system is turned off.
Power Distribution Board: The power distribution board is a FRU and distributes main 12V power from the power supplies to the rest of the storage controller. It is directly connected to the connector break out board and to the motherboard through a bus bar and ribbon cable. It also supports a top cover interlock kill switch. The power supplies connect directly to the power distribution board.
Connector Break Out Board: The connector break out board is FRU and serves as the interconnect between the power distribution board and the fan power boards, storage drive backplane, and I/O board. It also contains the top-cover interlock "kill" switch.
Fan Power Boards: The two fan power boards are FRUs and carry power to the system fan modules. In addition, they contain fan module status LEDs and transfer I2C data for the fan modules.
Storage Drive Backplane: The storage drive backplane is a FRU and includes the connectors for the storage drives, as well as the interconnect for the I/O board, power and locator buttons, and system/component status LEDs. The system has a 12-disk backplane. Each drive has an LED indicator for Power/Activity, Fault, and Locate.
Figure 2-29 7120 Controller I/O Components
The following figure and legend show the storage controller internal cables.
Figure 2-30 7120 Controller Storage Drive Data Cable
Figure 2-31 7120 Controller Ribbon Cable
All sockets must be occupied by either a filler or a DDR3 DIMM. All DDR3 DIMMs must be identical. DIMMs are pre-installed in P0 slots D1, D2, D4, D5, D7, and D8.
Figure 2-32 7120 Controller CPU and Memory Components
The fan modules and LEDs are shown in the following illustration.
Figure 2-33 7120 Controller Fan Modules and LEDs
The following figure and legend show the power distribution and associated components.
Figure 2-34 7120 Controller Power Distribution Board and Associated Components