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Dec 7 |
answered | How do I protect business critical data against fire? |
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Feb 4 |
awarded | Yearling |
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Sep 8 |
answered | How should I burn in hard drives? |
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Dec 6 |
comment |
How do you monitor a monitoring server? I think I'm writing using psychological terms that don't mean what you think they mean. Behavioural psychology, and aviation psychology have a lot to tell system engineers. The field was developed heavily in WWII to get 18-20 year old crews to fly state-of-the art aircraft without crashing, and to still have attention left over for their real military tasks. That's why aircraft have a master caution light, not a "everything is okay" light. TLDR (I don't think that word means what you think it means) |
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Dec 5 |
comment |
How do you monitor a monitoring server? Regular OK messages aren't that useful: you cannot reliably condition a person to make an action in the absence of a stimulus. |
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Nov 24 |
comment |
Are there any free auto-starting VM products? phpVirtualBox is a great web front end to VirtualBox. Startup/shutdown scripts are included on their website |
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Nov 24 |
comment |
How to create Virtual Machine from live system? Ouput from VMWare converter works with most VM's. I just finished virualizing an elderly server. It worked well. |
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Nov 20 |
comment |
Computer controlled winch Use a thermal switch (thermostatic switch) to power an electric door striker (latch). Buy one that triggers at say 85F, attatch it to your hot rack, and the door will pop open if the power fails, for the server room overheats. BTW this is a really cool idea. The strikers normally run on 24V, so it's a wall wart, some simple wiring, the thermal switch and the striker. Strikers come in fail closed and fail open. You want fail open. |
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Nov 16 |
revised |
Terminal server for Linux typos |
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Nov 16 |
answered | Terminal server for Linux |
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Nov 16 |
comment |
Tool to trace mac address back to a switch port That 3Com feature was very good; CPU by port is a lifesaver sometimes too.. |
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Nov 16 |
comment |
Disable thumb drives, but allow other mass storage USB devices on Linux There are ugly security issues with flash based drives. They can't really be erased, or trusted to be erased. Portable HDD's on the other hand are easy to erase and securely destroy. |
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Nov 16 |
revised |
Power and Cooling Cost compared with Server/Hardware Cost Trued to make it a bit punchier |
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Nov 16 |
revised |
Power and Cooling Cost compared with Server/Hardware Cost corrected stupid mistakes in the math |
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Nov 16 |
revised |
Power and Cooling Cost compared with Server/Hardware Cost corrected annual assesment, added formatting to highlight my main point |
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Nov 11 |
comment |
Power and Cooling Cost compared with Server/Hardware Cost Guys, I used 2.6 in my example because that's about what a "datacenter" put together out of "the usual" pieces achieves. Take one industrial/office building, (make it energy inefficient; it will be) add big air conditioning (don't use an economizer, or ambient air), have lots of fluorescent lighting (which is left on), set the thermostat for 20C machine space, and you're looking at 2.6ish just like that. The last place we measured got 2.3 and is probably one of the best ones in town. If you even know what PUE is, you probably know that 1.2-1.3 is possible. Most people don't. |
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Nov 11 |
answered | Power and Cooling Cost compared with Server/Hardware Cost |
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Jul 26 |
awarded | Commentator |
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Jul 26 |
comment |
What's the benefit of using “containers” in the datacenter as opposite to regular installation Most container systems convert from air to water and have water cooling, they don't use lots of air to cool a big space. Water carries heat more efficiently than air does. Water cooling infrastructure over 1Mw or so is the same tech all thermal power stations use; and very mature and efficient, of and it scales. |
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Apr 1 |
awarded | Editor |
