Use the information on this page as a preparation reference for servicing replaceable components of 7420 controllers. Refer to the following for procedural instructions:
Controller Tasks - replace system controller components
Disk Shelf Tasks - replace disk shelf components
The Sun ZFS Storage 7420 Appliance consists of either a single storage controller, or two storage controllers in a high availability cluster configuration, and one to 24 Sun Disk shelves. Refer to the http://www.oracle.com/us/products/servers-storage/storage/unified-storage/index.html for the most recent component specification.
The 3U chassis form factor dimensions are as follows:
The 500GB boot drives (HDDs) reside in slots 0 and 1 as a mirrored set, and Sun Storage Readzilla 512GB solid state drives (SSDs), may optionally fill, in order, slots 2 through 5. Each storage controller may have 0, 2, 3, or 4 Readzilla devices.
The following graphic shows the 7420 rear panel. Base configuration HBAs are not depicted in this illustration.
The 7420 storage controller chassis has the following boards installed. Field-replaceable units (FRUs) should only be replaced by trained Oracle service technicians.
Motherboard - The motherboard is a FRU and 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.
Power Distribution Board - The power distribution board is a FRU and 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 storage controller, the power supplies connect to the power supply backplane which connects to the power distribution board.
Vertical PDB Card - The vertical power distribution board, or Paddle Card is a FRU and serves as the interconnect between the power distribution board and the fan power boards, hard drive backplane, and I/O board.
Power Supply Backplane Card - This board connects the power distribution board to power supplies 0 and 1.
Fan Power Boards - The two fan power boards are FRUs and carry power to the storage controller fan modules. In addition, they contain fan module status LEDs and transfer I2C data for the fan modules.
Drive Backplane - The six-drive backplane is a FRU and 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.
The components of the storage controller are shown in the following figure and identified in the table.
The 7420 appliance supports two or four CPUs, with two memory risers required by each CPU. Four or eight 4GB or 8GB DDR3 DIMMs are installed on each riser, accommodating up to 256GB of memory for two CPUs, or up to 512GB for four CPUs. Empty CPU sockets must have memory riser fillers installed for proper cooling.
The new 7420 controller has different CPU options and memory risers, but is visually identical to the existing 7420 controller (with 1.86GHz or 2.00GHz CPUs). The new 7420 controller supports the following configurations:
Two, four, or eight 8GB DDR3 DIMMs installed on each riser, accommodating 128GB, 256GB, or 512GB of memory for 2.0Ghz CPUs.
Four or eight 8GB DDR3 DIMMs installed on each riser, accommodating 256GB or 512GB of memory for 2.0GHz and 2.4Ghz CPUs.
Four or eight 16GB DDR3 DIMMs installed on each riser, accommodating 512GB or 1TB of memory for 2.4Ghz CPUs.
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.
The Fan Modules and Fan Module LEDs of the storage controller are shown in the following figure. The following LEDs are lit when a fan module fault is detected:
Front and rear Service Action Required LEDs
Fan Module Service Action Required (TOP) LED on the front of the server
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.
The Sun Fishworks Cluster Controller 200 belongs in the Cluster slot (C) only. SAS HBAs must all be of the same type, installed in slots 1 and 8, with an optional third SAS HBA in slot 2, and an optional fourth SAS HBA in slot 7. PCIe slots should be populated in the following order: 9 (if used), 0 (if used), 7, 2, 6, 3, 5, 4.
The serial management connector (SER MGT) is an RJ-45 connector and provides a terminal connection to the SP console.
The network management connector (NET MGT) is an RJ-45 connector and provides a LAN interface to the SP console.
There are four RJ-45 Gigabit Ethernet connectors (NET0, NET1, NET2, NET3) located on the motherboard that operate at 10/100/1000 Mbit/sec. These network interfaces must be configured before use.
The following tables show the configuration options for a single standalone 7420 controller or two clustered 7420 controllers. All PCIe cards are low-profile, and must be fitted with low-profile mounting brackets.
This table describes 7420 standalone base configurations. Note: both 7100566 and 7100568 include a cluster card and can be configured as a single standalone or two clustered configuration.
This table describes 7420 cluster base configurations.
This table describes NIC/HBA options for 7420 single and cluster configurations.
This table describes the supported single and clustered PCIe configuration option summary for 7420.
The 7420 does not contain primary storage within its chassis, and therefore connects to external storage shelves and cages.
The 7420 single and cluster controller configurations allow one to four chains of 1 to 6 Sun Disk Shelves. Any combination of disk-only and Logzilla-capable shelves may be combined within the chain in any order. The cabling configurations are unchanged. Half-populated shelf configurations are not supported.
See Disk Shelf Overview for component specifications and diagrams.