Redundancy for pumps is easy at data center scales, but the very real problem over non-trivial equipment lives is leaks.
Way back when, we used concrete pumping hoses for chilled water to CRAC units, to facilitate relocation of the units and reduce the risk of leaks after an earthquake. Worked pretty well, they had a huge safety factor compared to concrete pressures, and they were easy to test before placing into service. Seismic performance was very predictable, and it all worked well. Then, a bad (metallurgicly) batch of fittings came in, and two or three years into operation the fittings separated from the hoses and two or three floors of data center were flooded.
Same things have happened to copper pipes, victaulic fittings and welded connections on steel pipes, PEX pipes... everything imaginable.
Water cooling is great, but there are a lot of weak links in the chain from a risk management perspective.
Shame nothing ever came of HP's technology to "print" water droplets on the die and use some latent cooling in data centers.
Very similar experience at KU's research reactor-- a LEED Gold building now sits in its place.
However, the original reactor was quite tiny-- less than 100kWt IIRC. I think "cleanup" took about a week, although I didn't go back into the building for another couple years.
That said, a few tons of concrete and a little extra waste isn't exactly the same order of magnitude.
I thought British standards frowned on three phase power panels for anything but three phase (and maybe 400V) loads.
In the US it is common if you need more than 400A 120/240V single phase, although getting a 480V residential service would be very unusual, unless you have acreage.
The statistics don't seem to draw real conclusions, aside from conflicting grossly with each other. Fatalities at home with kids appear to be on the order of 3-10,000 per year, total accidental fatalities are unlikely to be more than twice that number. 10-200,000 Defensive gun uses a year are claimed depending on what sources you believe.
Really the debate has gotten to the point of stupidity, this from someone who prefers more gun control. The extremes fight it out without ever having a rational debate. The simple solution is to eliminate the shield laws for gun manufacturers and instead set a statutory limit per death that is high enough that they want to be good citizens. Not perfect, but maybe achievable.
In fairness, the alternate is that when "society" isn't inherently polite then you need non-polite means to communicate with the spectrum. I am beginning to wonder when we cross the line.
Sadly, it seems like the opposite will happen, at least from my perspective with traditional office servers. We will migrate from a 90% Linux environment to a 100% Windows environment because of shortcomings in samba. It just isn't worth the pain anymore.
High voltage lines I would give more credence to, between the sound of corona discharge at medium voltage, and to a much lesser level the electric field of 220kV + lines. I have also seen places with high magnetic field due to the use of ground return, where things become magnetized.
Noise might be a hard one to pidgeonhole as such, but I would class all of these things as mental rather than physical root causes.
You can pay a lot of taxes, but (in the US at least) you can do a solo-401k retirement plan, which will let you save $37k with zero taxes and $17k with just 15%. You can also deduct expenses, and if you are creative with your business structure you can avoid some other taxes.
FWIW, at least Audiotechnica offers iPhone compatible mic/controller in their noise cancelling models. A DJ or studio set isn't exactly the target market though.
If using a USB-C or lightning connector that can source power, it might not be an entirely bad thing. Bought the Bose in-ear noise cancelling headphones, and the biggest annoyance is the little power brick. Go digital with power from the phone, and you actually improve both products.
But, this change would really piss me off; I would want at least one generation of dual-mode operation so I can phase out my new headphones over a reasonable life.
Most of those processes can't just start and stop on demand, unless they are grossly inefficient, have no pollution control measures, and/or are grossly oversized. It all comes down to where you take your inefficiencies.
A memorable life experience was seeing a debate between Timothy Leary and G. Gordon Liddy. If you want to know what a life of using LSD is like, Leary was the poster child.
Of course, another memorable life experience was a mushroom shake in Haad Rin at the full moon party, but I digress...
Persecuted individuals are one class, as are people who shouldn't speak on a topic because it might include privileged or sensitive information where context of a real name would cause problems. Even on/., I find myself self-censoring posts because it wouldn't be that hard for someone to figure out who exactly I am, even without/.'s complicity.
Most people cannot survive running their own business, period. That said, skilled professionals who can should come out ahead doing independent contract work over full-time employment. You break even with around 1,000 billable hours in a year typically, if you can control your billing rate effectively. If you can't control your rate (or negotiate well), you end up needing to work about 1,600 billable hours to break even.
Target billing rate should be full-time equivalent salary/2080 hours*3.0, or roughly your current salary divided by 700.
Contracting of non-core functions does make sense for small and mid-sized companies. Large companies really should have in-house expertise though. When they contract the work out it is really just an MBA fantasy.
Your mindset improves efficiency and makes project execution more effective, but it likely isn't in your own best interests (and arguably not in the company's best interest either).
In my field, young engineers often avoid delegating-- thinking that they can do the task faster-- often rightly. The problem is that the strategy doesn't scale, nor does it make effective use of resources. It is much more effective for thre people to put in an extra 5 hours each in a week than one person do 10.
Where you run into trouble is when you are truly gifted and want to work to 100% of your potential. Generally speaking, it isn't worth the pain.
Things also break down where there is only one person with a specific skill set in a company. My solution for being the only Linux-savvy person in the office is to switch to Windows.
St. Louis has a lot of good things going for it, but it is still a city in decline. The suburbs isolate you from some of the issues, if you live and work close by, but you lose out on all the things that the city really has to offer, and there are a lot of non-functioning aspects to deal with. General unemployment is also pretty high, although I can't speak to Tech.
Everything in a hospital or modern medical office building is on the network, from access control systems to drug dispensers to refrigerators to the crash cart to the televisions to the CCTV cameras. Much of the equipment is VLAN'd, so to fully p0wn the building you would need to break through many many systems, but the reporting and auditing features pale in comparison to what the financial industry has been doing for the past three decades.
The solutions traditionally applied are defense in depth, and secondary supervisory systems that ensure inputs and actions are within a certain anticipated range and fail to a "safe" state. Redundant systems get much more ambiguous with medical equipment, and it does have a substantial impact on cost. Defense in depth from what I can tell is limited to VLANs to segregate HIPPA and non-HIPPA information, along with some of the basics on physical security.
Bottom line is the healthcare industry is about 20 years behind the times, and current "state of the art" is likely at least 10 years behind what it would need to be to be "secure."
People under 30 think they are invincible; why would they ever need to go to the hospital?
In truth, the only barriers are a few systems that have double-custody protection, and that is piss-poor protection when both systems go back to the same TER. Implanted devices scare the living shit out of me though; no fail-safe, no double-custody, etc.
Malpractice suit? Wrongful death lawsuit? Contract killing? Free medication? Lots of opportunity for money. A junkie isn't the most likely person to hack their medication dispenser or a Pyxis, but there are people that might have a vested interest.
Born in same area, same date, same first three letters of last name-- expect collisions. That is how the formula works for allocation, and I am sure real-time checking wasn't done due to "low probability."
Slashdot Mirror
Redundancy for pumps is easy at data center scales, but the very real problem over non-trivial equipment lives is leaks.
Way back when, we used concrete pumping hoses for chilled water to CRAC units, to facilitate relocation of the units and reduce the risk of leaks after an earthquake. Worked pretty well, they had a huge safety factor compared to concrete pressures, and they were easy to test before placing into service. Seismic performance was very predictable, and it all worked well. Then, a bad (metallurgicly) batch of fittings came in, and two or three years into operation the fittings separated from the hoses and two or three floors of data center were flooded.
Same things have happened to copper pipes, victaulic fittings and welded connections on steel pipes, PEX pipes... everything imaginable.
Water cooling is great, but there are a lot of weak links in the chain from a risk management perspective.
Shame nothing ever came of HP's technology to "print" water droplets on the die and use some latent cooling in data centers.
Very similar experience at KU's research reactor-- a LEED Gold building now sits in its place.
However, the original reactor was quite tiny-- less than 100kWt IIRC. I think "cleanup" took about a week, although I didn't go back into the building for another couple years.
That said, a few tons of concrete and a little extra waste isn't exactly the same order of magnitude.
QC25s do a pretty good job against a broad spectrum. Worth trying out. Crying kids, conversation, etc.
I thought British standards frowned on three phase power panels for anything but three phase (and maybe 400V) loads.
In the US it is common if you need more than 400A 120/240V single phase, although getting a 480V residential service would be very unusual, unless you have acreage.
In the us, failure to declare foreign assets is tax evasion.
The statistics don't seem to draw real conclusions, aside from conflicting grossly with each other. Fatalities at home with kids appear to be on the order of 3-10,000 per year, total accidental fatalities are unlikely to be more than twice that number. 10-200,000 Defensive gun uses a year are claimed depending on what sources you believe.
Really the debate has gotten to the point of stupidity, this from someone who prefers more gun control. The extremes fight it out without ever having a rational debate. The simple solution is to eliminate the shield laws for gun manufacturers and instead set a statutory limit per death that is high enough that they want to be good citizens. Not perfect, but maybe achievable.
In fairness, the alternate is that when "society" isn't inherently polite then you need non-polite means to communicate with the spectrum. I am beginning to wonder when we cross the line.
Sadly, it seems like the opposite will happen, at least from my perspective with traditional office servers. We will migrate from a 90% Linux environment to a 100% Windows environment because of shortcomings in samba. It just isn't worth the pain anymore.
High voltage lines I would give more credence to, between the sound of corona discharge at medium voltage, and to a much lesser level the electric field of 220kV + lines. I have also seen places with high magnetic field due to the use of ground return, where things become magnetized.
Noise might be a hard one to pidgeonhole as such, but I would class all of these things as mental rather than physical root causes.
You can pay a lot of taxes, but (in the US at least) you can do a solo-401k retirement plan, which will let you save $37k with zero taxes and $17k with just 15%. You can also deduct expenses, and if you are creative with your business structure you can avoid some other taxes.
FWIW, at least Audiotechnica offers iPhone compatible mic/controller in their noise cancelling models. A DJ or studio set isn't exactly the target market though.
If using a USB-C or lightning connector that can source power, it might not be an entirely bad thing. Bought the Bose in-ear noise cancelling headphones, and the biggest annoyance is the little power brick. Go digital with power from the phone, and you actually improve both products.
But, this change would really piss me off; I would want at least one generation of dual-mode operation so I can phase out my new headphones over a reasonable life.
Most of those processes can't just start and stop on demand, unless they are grossly inefficient, have no pollution control measures, and/or are grossly oversized. It all comes down to where you take your inefficiencies.
A memorable life experience was seeing a debate between Timothy Leary and G. Gordon Liddy. If you want to know what a life of using LSD is like, Leary was the poster child.
Of course, another memorable life experience was a mushroom shake in Haad Rin at the full moon party, but I digress...
Persecuted individuals are one class, as are people who shouldn't speak on a topic because it might include privileged or sensitive information where context of a real name would cause problems. Even on /., I find myself self-censoring posts because it wouldn't be that hard for someone to figure out who exactly I am, even without /.'s complicity.
Posting to fix fat finger mod.
Most people cannot survive running their own business, period. That said, skilled professionals who can should come out ahead doing independent contract work over full-time employment. You break even with around 1,000 billable hours in a year typically, if you can control your billing rate effectively. If you can't control your rate (or negotiate well), you end up needing to work about 1,600 billable hours to break even.
Target billing rate should be full-time equivalent salary/2080 hours*3.0, or roughly your current salary divided by 700.
Contracting of non-core functions does make sense for small and mid-sized companies. Large companies really should have in-house expertise though. When they contract the work out it is really just an MBA fantasy.
Boeing was news back in May.
Your mindset improves efficiency and makes project execution more effective, but it likely isn't in your own best interests (and arguably not in the company's best interest either).
In my field, young engineers often avoid delegating-- thinking that they can do the task faster-- often rightly. The problem is that the strategy doesn't scale, nor does it make effective use of resources. It is much more effective for thre people to put in an extra 5 hours each in a week than one person do 10.
Where you run into trouble is when you are truly gifted and want to work to 100% of your potential. Generally speaking, it isn't worth the pain.
Things also break down where there is only one person with a specific skill set in a company. My solution for being the only Linux-savvy person in the office is to switch to Windows.
St. Louis has a lot of good things going for it, but it is still a city in decline. The suburbs isolate you from some of the issues, if you live and work close by, but you lose out on all the things that the city really has to offer, and there are a lot of non-functioning aspects to deal with. General unemployment is also pretty high, although I can't speak to Tech.
Everything in a hospital or modern medical office building is on the network, from access control systems to drug dispensers to refrigerators to the crash cart to the televisions to the CCTV cameras. Much of the equipment is VLAN'd, so to fully p0wn the building you would need to break through many many systems, but the reporting and auditing features pale in comparison to what the financial industry has been doing for the past three decades.
The solutions traditionally applied are defense in depth, and secondary supervisory systems that ensure inputs and actions are within a certain anticipated range and fail to a "safe" state. Redundant systems get much more ambiguous with medical equipment, and it does have a substantial impact on cost. Defense in depth from what I can tell is limited to VLANs to segregate HIPPA and non-HIPPA information, along with some of the basics on physical security.
Bottom line is the healthcare industry is about 20 years behind the times, and current "state of the art" is likely at least 10 years behind what it would need to be to be "secure."
People under 30 think they are invincible; why would they ever need to go to the hospital?
In truth, the only barriers are a few systems that have double-custody protection, and that is piss-poor protection when both systems go back to the same TER. Implanted devices scare the living shit out of me though; no fail-safe, no double-custody, etc.
Malpractice suit? Wrongful death lawsuit? Contract killing? Free medication? Lots of opportunity for money. A junkie isn't the most likely person to hack their medication dispenser or a Pyxis, but there are people that might have a vested interest.
Since all anybody really cares about is the last four digits, we could simplify it at the same time...
Born in same area, same date, same first three letters of last name-- expect collisions. That is how the formula works for allocation, and I am sure real-time checking wasn't done due to "low probability."
...yeah, but think of the poor sea life!