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Many data centers historically didn't putmuch more thought into their deployment of server racks beyond basic functionalityand the upfront costs of the rack itself. When compared to a data center’scomplex mechanical, electrical, and technical systems, a server rack is low onthe totem pole of strategic commodities. But this perception is belied by a few simple facts.Server racks house millions of dollars worth of hardware, safeguarding allprocessed data, transactions, and intellectual property. They are thedefinition of “physical” infrastructure—welded steel that serves as yourenterprise’s last line of physical security. Finally, and most importantly, nocooling approach can exist without taking the server rack into account. Server RackCoolingThe only ASHRAE temperature standard exists at theequipment inlet—the front door of the rack. While the cooling process doesn’tnecessarily start there, nowhere is it more important. IT professionals, whenconsidering a rack manufacturer and product, need to understand how thatproduct contributes to productive cooling. Here are some telltale questions andscenarios: ·        Does the rack product have properfeatures for conventional,convective cooling? Server manufacturers recommend a 64%perforation pattern on the front door for optimal airflow·        Does the rack have inherent features thatcontribute to hot air recirculation? Racks as narrow as 24” have openings along the perimeter thatmust be sealed to separate hot and cold air paths. Blanking panels should beinstalled in all vacant rack spaces (RU). ·        Does the rack manufacturer have coolingproducts that scale? If, through a hardware refresh, a 4kW rack load becomes12kW, does your rack manufacturer have a supplementalcooling solution? Can you add capacity without a majoroverhaul?·        Does your rack manufacturer offer nextgeneration cooling technologies (In-Row, In-Rack, Liquid Cooling) forday-one high density loads? A recent study by Emerson states that future datacenters will be designed to support between 10-20kW per rack—far beyond thecapabilities of conventional cooling designsYour choice of manufacturer and product today can save youtime and heartache in the future. 42U’s sales engineers are server rack anddata center power/cooling experts. They will collaborate with you to determinewhich of the leading rack manufacturers’ enclosures will best secure your keyIT assets as well as address current and future capacity issues. 42U can helpyou ensure that the racks you select are the best solution for your current andfuture capacity and security needs. Server Rack ConsiderationsSpace utilization, flexibility, and leadtime are also important rack talking points. The following recommendationsspeak to these points. Installthe maximum footprint possible. Servers continuallyget smaller and more powerful. Meanwhile, the support requirements at the racklevel continue to increase: more power circuits, larger whips, more cables tomanage. Installing the maximum practical footprint, in terms of width anddepth, provides the most flexibility in the future for ever-changing hardwarerequirements. The rack footprint, of course, must beweighed alongside real estate policies and costs. Data center floor space isexpensive, and larger cabinets will consume more of it.   Makeuse of “Tool-less” features.  At one time, users needed a tool belt to work on server racks.Now, a number of manufacturers offer “tool-less” rack features to simplifyinstallation. Rack PDUs, cable managers, shelves, and other rack components(like side panels and roofs) can be installed without screwdrivers or smallhardware. These tool-less features are not ubiquitous,so please consult 42U for more information on participating manufacturers andproducts. Understandall rack features.  Each manufacturer’s solution is different. If you areconsidering a new product, make use of spec sheets and engineering drawings tounderstand the differences.  Forinstance: · Dimensions: Cabinet depth includes both the front and rear doors. Clarifypublished depth versus useable depth.  · Mounting Rails: Most racks have a preset position of 29” from the front to rear EIA rails. But ultimaterail spacing depends on your equipment. Do you need different spacing? Can therails be preset at the manufacturer to accommodate your needs? · Cable Management: Are there sufficient openings (either below or above) toaccommodate cable ingress and egress? Are wider/deeper cabinets available for networkingcabinets? · Power Distribution: Does your rack have built-in hardware for PDU installation? Ifnot, specify mounting hardware at the time of order. · Hardware: Are you connecting cabinets together? Bolting them to the floor?This hardware is traditionally sold separately from the rack and must bespecified by the user. · Transport: Do you need casters to get racks from the loading dock to thedata center? Understandyour manufacturer’s capabilities. Some manufacturershave limited product offerings. They have a few SKUs with no customization.Other manufacturers have assemble-to-order programs, where they can turn anynumber of rack configurations quickly. Users can specify unique components (like doors and roofs) and addancillary products (like casters, cable managers, and powerstrips) to bepre-installed. The unit arrives at your site ready to use. In these cases, your manufacturer can saveyou time and money on integration. The42U Advantage42U treats your dataseriously.  We are aligned with the leadingserver rack and enclosure manufacturers and tailor solutions to address allrackmount requirements. From off-the-shelf for tight deadlines to specializeddesign for project rollouts, 42U has the enclosure expertise for your datacenter project.