ZS3-4 Internal Components
The components of the ZS3-4 controller are shown in the following figure and identified in the legend.
Figure 31 ZS3-4 Controller Components
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ZS3-4 Internal Boards - The ZS3-4 controller chassis contains the following field-replaceable units (FRUs). FRUs are not customer-serviceable, and should only be replaced by trained Oracle service technicians.
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Motherboard - The motherboard includes CPU modules, slots for eight DIMM risers, 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's 3.3V standby supply rail, which is available whenever the system is receiving AC input power, even when the system is turned off.
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Power Distribution Board - The power distribution board distributes main 12V power from the power supplies to the rest of the system. It is directly connected to the Vertical PDB card, and to the motherboard through a bus bar and ribbon cable. It also supports a top cover interlock ("kill") switch. In the controller, the power supplies connect to the power supply backplane which connects to the power distribution board.
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Vertical PDB Card - The vertical power distribution board, or Paddle Card serves as the interconnect between the power distribution board and the fan power boards, hard drive backplane, and I/O board.
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Power Supply Backplane Card - This board connects the power distribution board to power supplies 0 and 1.
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Fan Power Boards - The two fan power boards are FRUs and carry power to the controller fan modules. In addition, they contain fan module status LEDs and transfer I2C data for the fan modules.
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Drive Backplane - The six-drive backplane includes the connectors for the drives, as well as the interconnect for the I/O board, Power and Locator buttons, and system/component status LEDs. Each drive has an LED indicator for Power/Activity, Fault, and Locate.
ZS3-4 System Drives - The ZS3-4 controller has two system boot drives in slots 0 and 1, configured as a mirrored pair. Read-optimized cache devices can be installed in controller slots 2 through 5, or installed in DE2-24 disk shelf slots.
Note - Read cache devices must be installed in either the controller or a DE2-24 disk shelf. Read cache devices cannot be installed in both controller and disk shelf slots at the same time. For software requirements and slot configuration rules, see Disk Shelf Configurations.
Figure 32 ZS3-4 Controller System Drive
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ZS3-4 4x4 SAS-2 HBA - The 4x4 SAS-2 HBA, installed in the ZS3-4, provides connectivity to external DE2 and Sun Disk Shelves. The HBA logical ports are numbered 3-0, top to bottom:
Figure 33 ZS3-4 Controller 4x4 SAS-2 HBA Port Numbers
See ZS3-4 PCIe I/O Cards for slot placement.
ZS3-4 CPU and Memory - The ZS3-4 controller supports 16GB DDR3 DIMMs installed on all eight risers, accommodating 1TB of memory.
Figure 34 ZS3-4 Controller DIMM Risers
Refer to the service label on the cover for DIMM placement information. On every memory riser, slots D0, D2, D4, and D6 must be populated; optionally, slots D1, D3, D5, and D7 may be populated as a group on all installed memory risers. All DIMMs in the system must be identical.
Figure 35 ZS3-4 Controller DIMM Placement
DIMM names in appliance logs and the Maintenance > Hardware view are displayed with the full name, such as /SYS/MB/P0/D7.
ZS3-4 Fan Modules - The Fan Modules and Fan Module LEDs of the controller are shown in the following figure. The following LEDs are lit when a fan module fault is detected:
Figure 36 ZS3-4 Controller Fan Modules
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Front and rear Service Action Required LEDs
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Fan Module Service Action Required (TOP) LED on the front of the controller
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Fan Fault LED on or adjacent to the faulty fan module
The system Overtemp LED might light if a fan fault causes an increase in system operating temperature.