Draft statement of work

Power & Cooling Requirements (TR-1)

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7.1Power & Cooling Requirements (TR-1)

Offeror will minimize the power and cooling required by the proposed systems. Offeror may provide documentation for the estimated total amount of power in kW (kilowatts) required by the complete Dawn and Sequoia systems including any subsystems (e.g., SN, LN, RAID disks, external networking, etc.) and the estimated total amount of cooling in BTU (British Thermal Units) required by the complete Dawn and Sequoia systems. These estimates may be based on the actual proposed configuration and not gross over estimates based on “worst case assumptions and maximal configurations.” In Offeror proposal, Offeror may indicate the basis for these estimates (e.g., engineering estimates of individual components and power supply efficiencies or simulation results or actual measurements, etc.) and the degree of uncertainty in them (e.g., ±5%, +10%/-5%). Offeror may list separately room air and any liquid cooling required for each system, in relation to the heat load created by operation of each system. Offeror may provide monthly updates to such estimates and review the basis for such updated estimates with Offeror until system installation. In addition, full system estimates for a fully configured system (with maximum amount of SDRAM, I/O subsystems, etc) may be provided. This documentation may break down the power and cooling loads to individual racks for each component part of the system.

7.1.1Rack Power and Cooling (TR-1)

For racks with air cooling solutions that require all the cooling from air provided by the facility, each rack will not require more than 50 kW of power, and corresponding cooling, assuming front to back or bottom to top air cooling. If the rack requires more than the above power envelopes, then Offeror will propose less dense solutions and/or alternative cooling apparatus that reduces the intake air cooling load. Offeror will fully describe the liquid cooling apparatus and the implications for siting and facilities modifications (e.g., chilled water feeds, flow rates).

7.1.2Rack PDU (TR-1)

Rack PDU will minimize the number of 480V circuit breakers required in wall panels at LLNL siting location. Specifically, redundant power feeds may not be proposed. One (1) power feed per rack would be ideal. In addition, the amperage of the required circuit breakers should be calibrated so that the utilization is maximized, but below 80% of the rated load during normal operation with user applications running. If the equipment in the rack requires more power during power-up (so called surge power), the rack PDU may not be calibrated to this surge power, but rather to the normal operating power with user applications running.

The Rack PDU will have on-off switches or switch rated circuit breakers to allow system administrator to power down all components in a rack with switches or circuit breakers in the PDU.

7.2Floor Space Requirements (TR-1)

Offeror will minimize the floor space required by the proposed systems. Offeror may provide a proposed floor plan of the proposed Dawn and Sequoia systems that fits into the space requirements specified below and showing the placement of all system components including, but not limited to: node racks, input/output device racks, interconnect racks, external networking frames, and RAID disk device frames.

7.2.1Dawn Floor Space Requirement (TR-1)

The Dawn system may be installed in B453 east end of the west main computer room and may be less than 9,000 ft² as accommodated by this computer floor. This includes, all system components including, but not limited to: node racks, input/output device racks, interconnect racks, external networking racks, and RAID disk device racks.

7.2.2Sequoia Floor Space Requirement (TR-1)

The Sequoia system may be installed in B453 west end of the east main computer room and may be less than 15,000 ft². This includes, all system components including, but not limited to: computer racks, input/output device racks, interconnect racks, external networking frames, and RAID disk device frames.

In the event Offeror has to provide additional hardware to achieve performance requirements specified in the subcontract, this equipment may be installed on this floor as well.

7.3Rack Height and Weight (TR-1)

System racks will not be taller than 84” high (48U) and not place an average weight load of more than 250 lbs/ft² over the entire footprint of the system, including hot and cold isles. If Offeror proposes a rack configuration that weighs more 250 lbs/ft² over the footprint of the rack, then Offeror will indicate how this weight can be redistributed over more area to achieve a load less than 250 lbs/ft².

7.4Rack Seismic Protection (TR-2)

Proposed system racks may be seismically qualified (in accordance with IEEE 344, ICC AC 156, or similar) and may be appropriately anchored to resist seismic load in accordance with the following criteria and requirements. The seismic anchorage design may conform to 2006 International Building Code using the following variables and may address both sliding and overturning of system racks:

Occupancy Category IV (I_E = 1.5)
Site Class C
Geographic Coordinates: 37°41'13.59"N, 121°42'13.89"W
Computer Floor Height = 0.5 Roof Height

The following two approaches meet the above rack seismic protection requirements. However the conventional rack tie down approach should only be proposed if the IsoBase approach cannot be made to work.

Use of WorkSafe Technologies’ IsoBase isolation platforms. Note that use of IsoBase isolation platforms requires coordination with the manufacturer of the platforms for items including, but not limited to, installation coordination, platform openings for ventilation, added cable and wire lengths to accommodate seismic displacement, and attachment of nylon strap restraints at the base of the system racks.
Use of conventional tension rod seismic tie down anchorage. With conventional anchorage, the tension rods may be secured to the existing strip system of floor-anchored channel struts. If selected, LLNL can provide locations, details and strength limits of the channel system. Use of ductile steel components is required, and shear transfer for horizontal loads may be achieved through use of floor clips attached to the existing 24” square Tate FF 3000 cast aluminum access floor panels.

Adjacent racks in a row may be interconnected with a minimum of four corner bolts. Bolts may be ¼” diameter minimum and may be ASTM A 307 Grade A bolts, or equal. Bolts may be provided with suitable nuts and washers. Racks will be delivered pre-drilled. Field-drilling of holes for interconnection may not be made on the computer room floor prior to installation of ANY equipment.

System rack bases may have removable wheels and leveling feet, as well as at least corner anchorage points with sufficient strength and stiffness to transfer the seismic demands determined by the Offeror’s Structural Engineer. If the racks have wheels, they may be adjusted or removed from racks prior to permanent installation so that they do not touch the floor or IsoBase™.

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