Evolocity II Installation Guide.book - Abel Keogh

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2 Preparing for Installation Preparing the Site Component EPDU 120 EPDU 250 UPS Control Unit* UPS Battery* Icebox Cabling (per host) Unit Weight 3 lbs. (1.3 kg) 3 lbs. (1.3 kg) 25 lbs. (11.3 kg) 80 lbs. (36.2 kg) 5 lbs. (2.2 kg) 1 lb. (0.4 kg) Note Inspect the floor intended to support the cluster to determine that it has sufficient structural integrity to carry the load applied by the cluster—to ensure safety, consult a structural engineer. The most ideal solution is to install a raised floor specifically designed for computer centers. A flooring system of this type provides the maximum convenience and safety, allowing you to run cables under the floor and providing a means by which cold air may be forced into rack enclosures to ensure efficient cooling. Cooling Requirements Clustered computers produce potentially large amounts of heat that can drastically reduce the life span of your cluster components. Although Evolocity II clusters operate at approximately 22° F (11° C) cooler than standard 1U and 2U solutions, you should take adequate steps to prevent the cluster from overheating. Warning! Hosts require substantial cooling targeted specifically at each host. Hosts that are not cooled sufficiently may shut down or suffer irreparable damage. One of the most significant factures in ensuring adequate cooling is room size. A large room with high ceilings allows heat to rise away from the computing equipment, providing plenty of airflow in and around the cluster. If you purchased a cluster that contains more than five hosts, it may be necessary to equip your room with an additional, commercial air-conditioning unit. Most computer rooms maintain an average temperature between 60–68° F (16–20° C). If your cluster produces enough heat to overwhelm your present cooling system, additional cooling is a must. The room should have sufficient air conditioning capacity to support the cooling needs of the entire cluster and use controls that prevent excessive temperature fluctuation. To ensure that the equipment used to cool the cluster is adequate, determine the total power consumption (in watts) of all devices in the room and convert that number to British Thermal Units (BTUs). This is accomplished using the formula watts x 3.412 = BTU. For specific altitudinal cooling requirements, refer to the table on page 3. Evolocity II Installation Guide
EXIT CHANGE SELECT A1 1 2 3 4 5 6 7 8 9 EXIT CHANGE SELECT 10 A2 A1 1 2 3 4 5 6 7 8 9 10 A2 Preparing for Installation 3 Preparing the Site Static pressure is equally as important as temperature. Linux Networx recommends the static pressure be no less than 0.5 inches as measured in front of the rack enclosure. This will require a high-volume air grate such as the “Tate Access Floor GrateAire” (part number 8515). The recommended air volume is 350 Cubic Feet per Minute (CFM) per each five hosts in the subrack. The following is a comparison between a typical floor grate (on the right) that allows approximately 25% air flow and the Tate Access Floor GrateAire (on the left) that allows approximately 75% air flow. Altitude Feet Inches Mercury ALTITUDE CORRECTION CHART STANDARD AIR—ALT. 0 FT. 29.92" HG. 70° F .0740 DENSITY Lbs/sq In Atmosphere Specific Volume Cu Ft/Lb Relative Density Correction Factor Air Density Lbs/Cu Ft Cfm Transfer Factor Cfm Correction Factor 0 29.92 14.70 13.340 1.000 0.0750 1.080 1.000 100 29.81 14.64 13.389 0.996 0.0747 1.076 1.004 200 29.70 14.58 13.439 0.993 0.0745 1.073 1.007 300 29.60 14.52 13.488 0.989 0.0742 1.068 1.011 400 29.49 14.46 13.538 0.985 0.0739 1.064 1.015 500 29.38 14.40 13.587 0.981 0.0736 1.060 1.019 600 29.28 14.36 13.636 0.978 0.0734 1.057 1.022 Evolocity II Installation Guide
Page 2 and 3: i Notice Notice This manual and the
Page 4 and 5: iii Introduction Annotations Annota
Page 6 and 7: v Training Training Training from L
Page 8 and 9: vii Other Limitations and Disclaime
Page 12 and 13: 4 Preparing for Installation Prepar
Page 14 and 15: 6 Preparing for Installation Prepar
Page 16 and 17: 8 Host Installation Host Placement
Page 18 and 19: 10 Cabling the Cluster Evolocity II
Page 20 and 21: 12 Cabling the Cluster Evolocity II
Page 22 and 23: 14 Powering Hosts On and Off Evoloc
Page 24 and 25: 16 Powering Hosts On and Off Indica
Page 26 and 27: 18 Glossary Evolocity II Installati
Page 28 and 29: 20 Linux Networx Limited Warranty T
Page 30 and 31: 22 Linux Networx Limited Warranty O
Page 32: 24 N number, host 8 P power consump

Evolocity II Installation Guide.book - Abel Keogh

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