This approach allows us to continue our operations regardless of machine I tried the vertical approach, but manufacturing the required plenum to keep the air clean to the rear machines cost too much for this project, but it’s not off the table for the next Lee When I open the door I can literally watch the machine temps go up, but I can keep it open for 15-20 minutes before the core temps reach Ahhh. Used mac minis mac os x#We require Mac OS X because the products we make support Windows, Linux and Mac so we have data centers with thousands of machines configured with all 3 OS’s running constant build and test operations 24 hours a day 365 days a year.Īs for device failure, we treat these machines like pixels in a very large display, if a few fail, it’s ok, the management software disables them until we can switch them out. These Mac Machines all run OS X in a NetBooted environment. There were plenty of discussions of Virtual environments and other “Bare Motherboard”/Google Datacenter-type solutions, but the fact is, the Apple EULA requires that Mac OS X run on Apple Hardware, since we are a software company we adhere to these rules without exception. Well, I guess I’m just like a challenge -), but seriously, the company I work for has a need to have large numbers of machines to build and test the software we make. these machines all run SSD’s and I ordered them with AppleCare, so I hope to never have to change a drive -)Īs for the reason I built this. I would like to answer some of the questions posted. Thanks for the great write up Hack A Day. Used mac minis professional#The final result is a professional looking rack that can replace a rack of Xserves, and has capacity to be upgraded in the future. This allows each shelf of four to plug into a single outlet. The solution: a one to four Y cable for the Minis. This would have required a lot of PDUs, and a lot of cables. Since this deisgn was for a data center, the Minis would have to draw power from a Power Distribution Unit (PDU). This was all integrated into the door of the rack.Īnother challenge was getting power to all of the Minis. To provide sufficient airflow, built a custom cooling door out of four car radiators fans, connected to a 40A DC motor controller. Plastic inserts were designed to ensure that exaust wasn’t sucked into the intake of an adjancent Mini.Īn array of 160 computers is going to throw a lot of heat. Once challenge of this was managing the exaust air of each Mini. Nobody made a 1U shelf to hold four Minis, so worked with a vendor to design his own. That’s 640 real cores, or 1280 if you count HyperThreading.įirst, Steve had to tackle the shelving. His solution was to stick 160 Mac Minis into a rack. Used mac minis cracked#If the Screen/LCD is cracked or has any issues, please cite this as a Screen Issue in "Functional Condition > Has Functional Issues".Needed an alternative to the Xserve, since Apple stopped making it. May have heavy scratches on the Screen/LCD. May have heavy or deep scratches, heavy scuffs, and/or multiple dings or dents on the casing of the device. If the Screen/LCD is cracked or has any issues, please cite this as a Screen Issue in "Functional Condition > Has Functional Issues". May have a few small, light scratches on the Screen/LCD. May have a few small dings or dents on the casing of the device. Fair Noticeable casing scratches and/or scuffs. If it has any casing dings, casing dents, or screen scratches then please mark it as Fair. Good Light casing scratches and/or scuffs (not on the Screen/LCD), but no major flaws. If it has light scratches or scuffs, then please mark it as good.
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