16U Reserved feature
The following new 16U Reserved feature allows clients to create all-in-one solutions to run their entire business or independent application or cloud solutions:
•FC 0617 is “16U Reserved” space in the rack for client-owned components to be installed in the Z rack.
•Allows for clients to integrate other hardware into the single 19-inch rack, which lowers data center footprint requirements.
•Reserved space can be especially useful for space-constrained data centers or to keep rack-mounted HMC and other rack-mounted equipment together with the Z server.
This appendix includes the following topics:
G.1 General rules
Consider the following general rules regarding the 16U Reserved feature:
•A system with FC 0617 can have 0, 1, or 2 PCIe+ I/O drawers.
•FC 0617 can be ordered as part of a factory new build or as field MES upgrade.
•Upon ordering, 16 EIA rack units are reserved to prevent further I/O upgrades that require PCIe+ I/O drawers 3 or 4.
•The feature code must be installed before any extra components are added to keep the machine under warranty.
•Feature cannot be removed after it is ordered.
•A set of ballast plates is provided and installed in the bottom of the rack (to mitigate potential tipping hazard) for configurations with 0 or 1 PCIe+ I/O drawers.
•Requires two extra PDUs to be installed in the lower vertical locations on each side of the rear of the rack:
– If MES is ordered and second PCIe+ I/O drawer is installed, no other PDUs are required.
– Specific PDU plugging locations must be used for the equipment installed (as described in IBM 3907 Installation Manual for Physical Planning, GC28-6974).
•A set of 32 1U air flow filler plates (for front and rear side of the rack) is included for cosmetics and to manage proper airflow.
•Cable management spine hardware is included with the 16U Reserved feature.
The front and rear of the system with the 16U Reserved defined location are shown in Figure G-1. The rear of the system view displays the cable management spine that is mounted at the center of the rack.
Figure G-1 16U Reserved space for customer use
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Note: The configuration that is shown in Figure G-1 on page 466 is for reference only. The optional device that is installed in the rack is for presentation purposes only. Actual fillers might differ from the fillers that are shown.
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G.2 Basic physical requirements
The following basic physical requirements must be met:
•Components fit within a 19-inch rack EIA rail-to-rail width (465 mm usable), and accommodate round rail holes
•Component rails fit within a 718 mm (928.25-inch) EIA rail-to-rail depth
•Content cannot extend beyond the face of the front (25 mm) and rear (100 mm) vertical EIA rails
•Components include front-to-rear airflow
•One unit cannot weigh more than 20.4 kg (45 lbs) per EIA location
Example: a 4U unit can weigh up to 81.6 kg (180 lbs)
•Component to be installed shows safety certification labels that are required for server components in your country (UL, TUV, and so on)
•Components should be populated from lowest open EIA and move up to avoid tipping hazards (similar to other racks or shelving)
•No liquid-based systems to be added because humidity monitoring is active
•FC 0167 effectively caps the number of PCIe+ I/O drawers to a quantity of two; therefore, this FC should not be ordered if it is expected that future MESs that require a third or fourth PCIe+ I/O drawer will be added
A sample usage of the 16U Reserved feature that uses various components for a single solution is shown in Figure G-2 on page 468. Equipment that can be considered to use the space include the following examples:
•Rack mount HMC
•Rack mount TKE workstation
•V7000 Storage
•V9000 Storage
•Network/SAN switches
•Future products
Figure G-2 Example of FC 0617 populated in the z14 ZR1 rack
•Intelligent Power Distribution Units (PDUs) two or four per system, depending on the configuration, switchable (Ethernet controlled). A breakout of a single PDU is shown in Figure G-3.
Figure G-3 Intelligent PDU breakout
The PDUs are mounted at the rear right and rear left sides of the rack and can exit the top or bottom of the rack. Each PDU features a single phase line cord. The number of line cords that are required depends on the system configuration.
The total loss of one PDU has no effect on system operation. Systems that specify two line cords can be brought up with one line cord and continue to run.
The larger systems that have a maximum of four PDUs installed must include four installed line cords. Systems that specify four line cords can be started with two line cords on the same side with sufficient power to keep the system running. The number of PDUs that are installed (which is dependent on the number of I/O drawers that is installed) is listed in Table G-1.
Table G-1 I/O drawers and PDU and line cords
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Number of I/O drawers
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Number of PDUs and line cords
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0
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2
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1
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2
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2
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4
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3
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4
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4
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4
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Note: FC 0617 16U Reserved requires four PDUs and four line cords, regardless of the number of I/O drawers.
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The following general electrical power requirements must be met:
•50/60 HZ AC
•Voltage ranges 200 V - 240 VAC single-phase wiring
•Two or four line cords, depending on the number of PDUs that are installed
•For HMC tower models, a customer-supplied outlet must provide 100 V - 130 V or 200 V - 240 V 50/60 HZ, single-phase AC power
•For the rack-mount HMC models, the customer must supply a PDU that provides C13 outlets for the three C13/C14 power jumper cables
The internal PDU power cabling for a configuration with no PCIe+ I/O Drawers and no FC 0617 16U Reserved is shown in Figure G-4. This configuration requires one pair of PDUs.
Figure G-4 PDU cabling with no PCIe+ I/O drawers installed
A configuration with one PCIe+ I/O drawer and no FC 0617 16U Reserved is shown in Figure G-5.
Figure G-5 PDU cabling with one PCIe+ I/O drawer installed
A configuration with two PCIe+ I/O drawers is shown in Figure G-6. The second pair of PDUs is installed and require two more power feeds from the customer.
When the FC 0617 (16U Reserved) is ordered, the bottom pair of PDUs is used to supply power outlets for the equipment that is installed in the designated space. When this feature is ordered, the maximum number of I/O drawers that is installed is two.
Figure G-6 PDU cabling with two PCIe+ I/O drawers installed
A configuration that includes PCIe+ I/O drawers 3 and 4 is shown in Figure G-7. This configuration requires four PU SCMs to be installed.
Figure G-7 PDU cabling with three or four PCIe+ I/O drawers installed
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