That's another reason I went with a variable unit, I was in the process of virtualizing and knew I wouldn't needs as much cooling down the road.
________________________________ From: John Cook [mailto:[email protected]] Sent: Thursday, November 10, 2011 11:15 AM To: NT System Admin Issues Subject: RE: Server room cooling units This is also a prime opportunity to push virtualization (if you don't already utilize the technology) as you will be able to go with smaller units, you'll lower your ongoing heat/electrical and reduce your future hardware outlays. John W. Cook System Administrator Partnership For Strong Families 5950 NW 1st Place Gainesville, Fl 32607 Office (352) 244-1610 Cell (352) 215-6944 MCSE, MCP+I, MCTS, CompTIA A+, N+, VSP4, VTSP4 From: James Kerr [mailto:[email protected]] Sent: Thursday, November 10, 2011 12:07 PM To: NT System Admin Issues Subject: Re: Server room cooling units +1 on the redundancy. My server room is about 12x12 and I have a 3 ton [1] air cooled unit a 1 ton water cooled unit as a backup (normally off) and the buildings AC. James. [1] Yes I know that 3 ton is too big for such a small area so I have some of its cool air venting into a hallway also, so the compressor doesn't die. Servers make for some heat and based on the heat generation I needed a 3 ton. On Thu, Nov 10, 2011 at 11:17 AM, Erik Goldoff <[email protected]<mailto:[email protected]>> wrote: Both Freon based, ammonia based, water tower ? +1 on the installer, maintenance and support is crucial. If you *need* 15 tons, I would consider TWO 8 ton units. With a single unit it's all or nothing, and the nothing part will suck if it happens to you. Erik Goldoff IT Consultant Systems, Networks, & Security ' Security is an ongoing process, not a one time event ! ' From: [email protected]<mailto:[email protected]> [mailto:[email protected]<mailto:[email protected]>] Sent: Thursday, November 10, 2011 11:04 AM To: NT System Admin Issues Subject: Server room cooling units Greetings! Currently, I have two HVAC bids regarding the expansion of our server room. (It will seem strange to have that room below 80 degrees, and I am not kidding with that number!). We have two proposals and with two different units, both 15 tons. One is by Stulz, and one is by Liebert. Anyone care to offer their opinions/experiences/etc on the advantages one has over the other? Thank you... -- Richard D. McClary Jr Infrastructure Architect, Information Technology Group ASPCA(r) 1717 S. 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