Tri-Laboratory Linux Capacity Cluster 2 (tlcc2) Draft Statement of Work
Mean Time Between Failure (MTBF) Calculation (TR-1)
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Mean Time Between Failure (MTBF) Calculation (TR-1)The Offeror will provide the MTBF calculation for each FRU and node type. The Offeror will use these statistics to calculate the MTBF for the provided aggregate TLCC2 SU hardware. This calculation will be performed using a recognized standard. Examples of such standards are Military Standard (Mil Std) 756, Reliability Modeling and Prediction, which can be found in Military Handbook 217F, and the Sum of Parts Method outlined in Bellcore Technical Reference Manual 332. In the absence of relevant technical information in the proposal, the Tri-Laboratory community will be forced to make pessimistic reliability, availability, and serviceability assumptions in evaluating the proposal. End of Section 4 5Facilities InformationA portion of existing facilities at the Tri-Laboratory sites will be used for siting the TLCC2 SU. The following sections give detailed facilities information about the Tri-Laboratory sites and facilities based requirements for SU and cluster aggregations of SU. LLNL Facilities InformationAt LLNL, SU will be sited in on both the east and west main computer floor in B453 (see Figure ). This entire facility has approximately 18,000 ft2 and 2.5 MW of power and associated cooling available for this purpose for the SU compute, networking and peripherals. The computer floor is 48” raised floor with 250 lbs/ft2 loading capability. However, racks with up to 500-lbs/ft2 floor loading can be accommodated with additional floor bracing. The overall SU aggregations average floor loading (including isles between rows) cannot exceed 250 lbs/ft2. In addition, rolling weight of racks during installation cannot exceed 250 lbs/ft2. Power will be provided to racks by under floor electrical outlets supplied by LLNS to Offeror’s specifications. Circuit breakers and PDUs are available in wall panels that can be modified to Offeror’s specifications. All other cables must be contained in cable trays supplied by LLNS to Offeror’s specifications. Straight point-to-point cable runs can NOT be assumed. LLNS will provide floor tile cut to Offeror’s specifications. In addition, it is anticipated that the Offeror’s equipment will be placed in adjacent rows so that air intakes in racks from adjacent rows are abutting with Offeror’s specified separations and hot air exhausts in racks from adjacent rack rows are abutting with Offeror’s specified separations. That is, the racks will be placed so that there are HOT and COLD aisle ways between racks with chilled air entering in the COLD isles and warmed air exiting in the HOT aisles. Offerors will describe any unique cooling solutions that allow for more efficient utilization of computer floor space and provide information on facilities impacts. LLNS will provide 2’x2’ grated floor tiles with 80% void in “cold aisles” to product up to 2,500 CFM airflow per tile. During installation, racks will transit from Offeror’s delivery trucks through 12’ (W) x 12’ (H) roller doors to an interior delivery dock. Note that the delivery dock height is 45” and can only accommodate one tractor-semitrailer rig at a time. The racks will transit down a 300’ long 9’ 8” (W) x 8’ 6” (H) hallway. The racks must transit several doors of size 7’ 10” (W) x 7’ 10” (H) and ride a freight elevator up one floor. The freight elevator doors are 8’ 4” (W) x 8’(H), the elevator area is 8’ (W) x 12’ (D) and the maximum loading of the freight elevator is 10,000 lbs. Racks may be staged on the B453 computer floor for unloading from packaging or unpackaged on the interior delivery dock. This facility will need modifications for siting TLCC2 SU. SU siting costs are considered part of the TCO. LLNS anticipates the construction work to be completed within sixty days of final facilities configuration agreement with Offeror. LANL Facilities InformationAt LANL, most SUs will be sited in the SCC, Building 2327. This entire facility has approximately 20,000 ft2 and 3.2 MW of power and associated cooling available for this purpose for the SU compute, networking and peripherals. The computer floor is 42” raised floor with 300 lbs/ft2 loading capability. There is a 16 ft. ceiling and an 18’6” ceiling plenum. The overall SU aggregations average floor loading (including aisles between rows) cannot exceed 250 lbs/ft2. In addition, rolling weight of racks during installation cannot exceed 250 lbs/ft2. Power will be provided to racks by under floor electrical outlets supplied by LANL to Offeror’s specifications. All other cables must be contained in overhead cable trays to hide them from view. Straight point-to-point cable runs can NOT be assumed. LANL will provide floor tile cut to Offeror’s specifications. In addition, it is anticipated that the Offeror’s equipment will be placed in adjacent rows so that air intakes in racks from adjacent rows are abutting with Offeror’s specified separations and hot air exhausts in racks from adjacent rack rows are abutting with Offeror’s specified separations. That is, the racks will be placed so that there are HOT and COLD aisle ways between racks with chilled air entering in the 6ft or wider COLD aisles and warmed air exiting in the 4ft wide HOT aisles. The average airflow per floor tile in the SCC is 800-1500 CFM and the cooling limit is 24 kW per rack. A few SUs delivered to LANL will be sited in the LDCC, Building 1498. This facility has 24” raised computer floor with 250 lb/ft2 loading capability. There is a 10 ft. ceiling. The average airflow per floor tile in the LDCC is 600-800 CFM. The air-cooled limit is only 10 kW per rack, so higher density liquid cooled solutions are preferred, particularly if the racks are otherwise the same as those proposed for LANL’s SCC facility. Electrical power distribution in both buildings normally uses 208V/120V 3-phase PDUs. Higher voltage such as 480V is possible but only as raw power (not on UPS), so it is not preferred as a total solution. Download 437.31 Kb. Share with your friends:
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