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Why not just build a Datacenter that is quiet?
On Sep 23, 2015 05:34, Nick Hilliard wrote:
What are people using for ear protection for datacenters these days? I'm
down to my last couple of corded 3M 1110:
http://www.shop3m.com/3m-corded-earplugs-hearing-conservation-1110.html
These work reaso
It is interesting where this conversation turned. But for history's sake...
NAC started on PM2e with Microcom's, and then USR Sportster. I remember USR
sending us PROM chips to change from 28.8 to 33.6. After that, PM3's. We were
early PM3 users, working with Megazone on an almost continuous bas
The rock has turned over for a moment and I have crawled out. It is good to see
the sunlight from time to time.
Those who know me know my life has gotten away from networking and that sort of
thing, and I am fully immersed in datacenter design and construction for IT
type loads (blades, compute
Mainly because I own it, and the people who use it. The server has been around
10+ years and has tight oversight. SPF is proper. This is a recent issue.
From: Scott Helms [mailto:khe...@zcorum.com]
Sent: Thursday, February 12, 2015 10:51 AM
To: Alex Rubenstein
Cc: Josh Luthman; NANOG list
hat there is no
spamming going on from here.
So, it’s not a question of adding a filter or not using gmail; it is not me who
is using gmail in this problem.
From: Josh Luthman [mailto:j...@imaginenetworksllc.com]
Sent: Thursday, February 12, 2015 9:32 AM
To: Alex Rubenstein
Cc: NANOG list
Is there anyone on-list that can help me with a world -> gmail email issue,
where email is being considering spam by gmail erroneously?
Thanks.
Correct. I've used T-Mo WiFi calling in numerous countries on three continents,
and they are all treated as is you are in your 'home' country.
> That is my understanding. Wifi calling is treated as on-net "home" calling.
> > Just a question on T-Mobile and wifi. If you are traveling to a roa
> > On Tue, Dec 16, 2014 at 12:32 PM, Alex Rubenstein > > wrote:
> > >
> > > I just with Wifi calling was ubiquitous.
> >
> > isn't it in every android phone since ~1yr ago?
Perhaps they are, but AT&T and Verizon don't allow it, because they are
terrible.
These work well, I have an ATT in my house. However, in a broad deployment
(like in a datacenter with lots of discreet visitors) it is pointless, because
ATT requires registration of any phone connected and it is limited to 10.
I just with Wifi calling was ubiquitous.
> Assuming you have good
What timing.
I live in 07874. Out here, only 50 miles from New York City, we have a problem.
Verizon's network in this area is older than most people who are subscribed to
this list. The copper is literally falling off the telephone poles, and in
conversations with linemen, they are instructed
Anyone selling IP over ATM / Frame Relay in North NJ Verizon LATA 224 that
could carve a PVC real fast?
Just because you say the debate should be ended doesn't mean it's true, or that
you are even correct.
> To end the debate, my staff master electrician says just replace the breaker.
Your staff electrician missed half the answer, which would be to replace the
breaker AND the receptacle. But you
> > Go look at any standard household lamp. It has a 5-15P on the end of
> > it, which could be plugged into an outlet rated for 20 amps (5-20R),
> > with 16 gauge lamp cord rated for 10 amps or less.
>
> Mine all seem to be NEMA 1-15P, some (most?) with 18 AWG wire.
>
> Have I been shortchanged?
Go look at any standard household lamp. It has a 5-15P on the end of it, which
could be plugged into an outlet rated for 20 amps (5-20R), with 16 gauge lamp
cord rated for 10 amps or less.
It all depends on the connected load.
> * w...@typo.org (Wayne E Bouchard) [Tue 18 Mar 2014, 23:53 CET]:
Strictly speaking, no, you cannot do this. The diameter of the pattern of the
pins are different 20 to 30 amps.
If no electrical inspectors are looking, yes, you can bend the pins and "make
it work." I've done it, others have done it, but you shouldn't do it and it is
a clear electrical code vi
We had gear in the MFS Colo in Whippany, NJ. We had a couple routers (2501's
and a 4700M), a couple PM3's, and some other crap. Near us were TNT's and Total
Controls from ANS (remember them??).
Yeah, it got warm in there, especially when the single 10 ton AC unit failed
(about every other day)
> we cannot assume that the connection between isp and cpe is a single entity.
>
> a typical example will be the guy who run the dslam and the guy who run the
> bras belong to two different companies in market which mandate open
> access.
... which is very, very common.
> >> Not necessarily. When the CPE is configured through DHCP (or PPP?),
> >> the ISP can send the secret.
> >
> > Which can be seen, in many cases, by other parties
>
> Who can see the packets sent from the local ISP to the CPE directly
> connected to the ISP?
The NSA, FBI, CIA, DHS. Or, the ISP
I have, and would.
> -Original Message-
> From: Phil Bedard [mailto:bedard.p...@gmail.com]
> Sent: Monday, October 07, 2013 8:50 PM
> To: Michael Thomas; nanog@nanog.org
> Subject: RE: nanog.org website - restored
>
> Yeah isn't there some cloud provider like Amazon, Rackspace, or MS wil
> From: Sam Moats [mailto:s...@circlenet.us]
>
> I give up trying to resist, I am now firmly in the tin foil hat club.
And therein lies the problem.
> Case in point.. And I'm going to name drop, but do not consider this a shame.
> I have been looking at various filtering technologies, and was looking at
> Barracudas site. I went on with my day, but noticed that filtering vendors
> start showing up on random websites. Fast forward 24 hours later
> Ohh we had some of those at JVNCNet, a real piece of crap.
Wow. JVNCnet. Haven't heard that name in a long, long time.
Yet, here, where I live, only 47 road miles from New York City, I have a cable
company who sells me metered (yes, METERED) DOCSIS, for nearly $100/month,
35/3. The limitation is like 100 GB/month or something (the equivalent of the
amount of Netflix or AppleTV my kids watch in a weekend) No alte
> Honestly, I expect replies to this question to range between zero and none,
> but I have to ask it.
Surprise!
> I understand the CALEA tap mechanism for most ISPs, generally, works like
> this:
>
> * we outsource our CALEA management to company X
> * we don't even know there's been a reque
> > So, you are comfortable just giving up your right to privacy? It's just the
> > way
> it is?
>
> If you want to exercise your right to privacy, use end to end encryption and
> onion remixing networks to hamper traffic analysis.
Whoa.
These are two completely separate issues. I concur with
> Approaches like
> http://www.wired.com/science/discoveries/news/2006/04/70619
> obviously don't scale to small time operators. But if you can vaccuum up close
> to the core at full wire speed (and there is no reason to think you can't,
> since
> there are switches which deal with that) you don't
> > Has fingers directly in servers of top Internet content companies,
> > dates to 2007. Happily, none of the companies listed are transport
> > networks:
>
> I've always just assumed that if it's in electronic form, someone else is
> either
> reading it now, has already read it, or will read i
> Yeah, perhaps not as elegantly worded as I would have hoped, but there are
> many reasons things "go down". Just one of those elements is the internet
> part, there's also transport, power, and other elements that combine to
> make this complex system called the internet. If you N+N or N+1 your
> Would you rather your ISP not maintain their devices? Are the
> consequences "so bad" of a 30 minute outage that your business
> is severely impacted?
>
> - Jared
You had me up until that line.
That should be expanded a little ...
First, I'd say, yes - many businesses would be severely impa
> I have a 700VA 9130 rackmount that I recently bought to give it an eval run
> (although the first was a dud). There is a 3kVA model. For my small load it
> reports a PF of 0.91 online.
PF, as in power factor? That has nothing to do with UPS efficiency.
nsive testing on this.
I don't know if anyone does this at the very-small level. I know GE's smallest
unit is 300 kva for eBoost.
"Question everything, assume nothing, discuss all, and resolve quickly."
-- Alex Rubenstein, AR97, K2AHR, a...@nac.net, latency, Al Reuben --
--Net Access Corporation, 800-NET-ME-36, http://www.nac.net --
> Just go -48vdc. None of these pesky UPS problems :)
Well, you still have 1/2 the UPS - the inverter section. It's not a silver
bullet.
> I would be interested to know how the power outages due to the storm
> have negatively affected air pollution and the smog problem in the area.
> Due to generators burning huge amounts of diesel, generators which
> undoubtedly have no meaningful air pollution control to speak of.
Well, that isn'
Probably ATT. Many areas of NJ had zero service from them for days.
- Original Message -
From: Jima
To: nanog
Sent: Wed Nov 07 09:32:25 2012
Subject: RE: Sandy seen costing telco, cable hundreds of millions of dollars
On Tuesday, 2012-11-06, Frank Bulk wrote:
> So which wireless carri
I had to summarize this recently for a news article I was interviewed for, so I
figured I forward:
--
Of our three datacenters, this is what we saw:
Parsippany 1 (OCT) - The worst we saw here was several sub-second power hits.
UPS's held without problem, and we did not transfer to generator a
If anyone is in need of emergency connectivity, VM's, colo, showers, whatever,
please contact me. All of our offices in Northern NJ are accessible and online
and can support any sort of emergency need.
-Original Message-
From: Emily Ozols [mailto:win...@team-metro.net]
Sent: Tuesday,
We have operated with several types of floor in four locations over the last 15
years (Raised, VCT, painted, and polished concrete).
Personally, I like the look of the polished concrete the best. It's relatively
cheap and easy to do. Epoxy and VCT tend to get hurt over time and require
consider
> The only slight snag in his argument is that the addresses are not unused.
> Not announced != Not used.
And for the definitive answer on this block, the official response is:
http://www.whatdotheyknow.com/request/internet_protocol_ipv4_address_a and
http://www.whatdotheyknow.com/request/internet
I can't agree with this. You are assuming a cost-plus model. Many things are
market-priced.
If you are the only game in town, and you have a great product, you sell it for
the most you can. You aren't a charity.
The customer always has the option to not buy your product.
- Original
25 B'way is in the process of being shuttered.
- Original Message -
From: Pierce Lynch
To: Abdelkader Chikh Daho
Cc: nanog@nanog.org
Sent: Thu Apr 19 11:22:17 2012
Subject: RE: Colocation in New York for a POP
Abdelkader,
I have had good experiences with TeleHouse America and their
Bankruptcy liquidation.
- Original Message -
From: Mark Stevens
To: nanog@nanog.org
Sent: Mon Mar 05 13:46:15 2012
Subject: Global Naps?
Global NAPs seemingly shutdown all tandem services last week and it is
causing major congestion issues with routing calls. Anyone have more
infor
Years ago, on my own, when I used to attend, I used to call the venue about a
month in advance and explain to them what was about to happen. Sort of a
warning, per say. I explained, in detail, who NANOG was comprised of (I often
would use the term "operators of the internet"). I explained even i
Not entirely on-list-topic, but still relevant.
http://news.cnet.com/8301-13579_3-20116336-37/apple-co-founder-chairman-steve-jobs-dies/?tag=cnetRiver
> I'd like to ask the list what products people are using to monitor
> their environments.
www.controlbyweb.com has some nifty stuff that we use extensively.
Perhaps there should be a DC track at NANOG?
One of the reasons I have not gone in years.
I have much knowledge and experience to share, but no one to share it with.
>
> I would love to be a part of this list if there is one!!!
>
> Cooling is not as easy as just pumping cold air into a room...
I think is would be short term. The home user is not going to continuously
upload data. They will do an initial sync, then incrementals.
People are doing this today with success. This is not a new thing.
Sent via Blackberry while presumably driving with one hand
- Original Message -
Yeah, I was going to respond to the original post but can't find it.
The statement made by Mr. Wallace borders on insulting. The devastation in my
county alone is something I have never seen. Thousands of houses destroyed,
tens of thousands displaced. Businesses completely wiped out. A major
th
Switch las vegas makes the same claim.
KY is def prone to the affects of a hurricane. But if you have a roof and
reasonable drainage, you will be ok.
Sent via Blackberry while presumably driving with one hand
- Original Message -
From: Jay Ashworth
To: NANOG
Sent: Wed Aug 24 17:46:
I don't know that is true. I believe voice network was overwhelmed. Wireless
data and sms had no issue or interruption whatsoever.
Sent via Blackberry while presumably driving with one hand
- Original Message -
From: chris
To: Sule, Mohammed
Cc: nanog@nanog.org
Sent: Tue Aug 23 14:3
> All the actual EE's I know are most impressed with the PowerWare (now
> Eaton Power) designs. For insance their 5110 is a line-interactive
> design built with quality components. The last I looked APC did not
> have a line-interactive design in this price range; they were all the
> "standby" de
> Of course, if he had local AC power available, it would kinda defeat one of
> the points of having PoE, which is to be able to put switches where there
> isn't a convenient AC drop to begin with.
But wait, there is more...
Maybe you want your POE devices (like phones) to stay alive during a pow
> > My home backups are somewhat large and not yet offsite due to their size.
> > (~4.7TB).
> >
We (NAC) run a rather large ZFS thing to sell cheap 'scratch space.' When I say
large, I think it surpasses well over 100 TB at this point.
So for me, it was easy. At home, my stuff spins on disk (n
> Damn, and people claim I'm nuts!
I know I am, thanks.
> You know, you could go whole hog and multihome.
Trust me, if I could, I would certainly do dark to my house.
> I've got 1 cabinet and 1 two-post rack in the basement. I'm also
> building out a small patch panel in a closet on the sec
I am in the process of building a house. I designed a room that can accommodate
three 24 x 36 inch cabinets or four post racks. I will likely install a APC
2200 watt UPS in the bottom of two of the racks, and the third will be a
cross-connect field, patch panels, etc.
The room will have a small
Yeah, you are correct.
But it was still a dumpster. We recycle a lot of metal around here :)
Sent via Blackberry while presumably driving with one hand
From: Matt Taber
To: Alex Rubenstein
Cc: 'bl...@csulb.edu' ; 'hect...@pobox.com'
; &#x
We recently dumped about 40 into a dumpster.
I shed a tear.
Sent via Blackberry while presumably driving with one hand
- Original Message -
From: Matthew Black
To: hect...@pobox.com ; NANOG list
Sent: Thu Jul 28 11:19:11 2011
Subject: Re: 3Com Total Control documentation
My sympath
> More to the point, as I note in another reply, you don't want to be *the
> lineman
> down the road with his hands on a "dead" wire*.
>
> Pretty much the *first paragraph* in NEC 700 (700.6) says this:
>
> """
> Transfer equipment shall be designed and installed to prevent the inadvertent
> int
> I think we're missing something, which is where these ATS's are
> installed.
>
> I don't think most utilities allow (largeish) ATS's to do a closed
> transition from a genset to the utility grid, but I may be wrong.
> There may be other ATS's in your facility that do a closed transition
> though
> It makes little sense to sync to the grid when the generator is only
> used when the grid is down - and unless you run your generators 24/7
> your UPS will have to make up for the comparatively long time it takes
> for the generator to start, so it's rather useless to sync the
> generator when th
> It ismy understanding also that most commercial grade gensets have
> built into the ATS logic that when utility power comesback online, that
> the transfer back to utility power is coordinated with the ATS driving
> the generator until both frequency and phases are within a user
> specified rang
Or:
This content is currently unavailable
The page you requested cannot be displayed right now. It may be temporarily
unavailable, the link you clicked on may have expired, or you may not have
permission to view this page.
> -Original Message-
> From: D'Arcy J.M. Cain [mailto:da...@dr
And we have yet to see what happens with backend transactions between private
institutions that have large blocks laying around, and them realizing that they
have a marketable and valuable thing. We may all say it won't happen, we may
even say we don't want it to happen, or that it shouldn't be
Cheap and reliable. Cisco 7507, RSP4 or RSP8 or whatever, with ChanDS3 cards,
running 12.0S.
> -Original Message-
> From: Chris [mailto:behrnetwo...@gmail.com]
> Sent: Monday, January 10, 2011 9:52 AM
> To: nanog@nanog.org
> Subject: How are you aggregating WAN customers these days?
>
> I just see this as a natural progression of what happens of a single
> player with a captive audience due to mergers and attrition. They know
> their customers aren't going anywhere. The only way to "fix" it would be
> to go back to the days when there were a bunch of competing local
> providers.
> btw, one thing I do not recall seeing on this thread is that 208v avoids one
> of
> the common problems with 120v, which is the third harmonic issue.
>
> With the cheaper switching power supplies, one will often see significant 3rd
> harmonics in the waveforms(*). The 3rd harmonic, across a 3
> > GFCI breakers are often required on large services, most large (new)
> > 480v services I have seen (1000A and larger) a have Ground fault
> > breakers,
>
> Actually, my recollection is that large new services include arc suppression
> rather than ground fault (480V service may be floating in a
> Also note that *your* electrical engineer may de-rate the circuits capacity
> due to the fact that switching power supplies generate numerous artifacts on
> the lines. These are all advanced (electrical) engineering topics.
>From a practical, real-world standpoint, these are not concerns today.
> GFCI breakers are very common, the slightly less common version are arc
> fault breakers which are starting to show up more as well.
Partly because of a code requirement. Houses burning down, etc. Somehow, we all
survived for a long time without them, but now there is a huge requirement.
Perha
> *Way* more power than the equivalent transmitters and TV sets. Even if
> you add in the cable headends, I suspect.
Yeah, but...
This is really not comparable.
Transmitters and TV sets require that everyone watch what is being transmitted.
People (myself included) don't like, or don't want th
> On 12/2/10 9:20 AM, Mark Kent wrote:
> > "Why do we install 120v instead of 208v?" was asked over a year ago
> > either here or on cisco-nsp. It generated a long discussion, but it
> > should have been cut short as early in the thread someone said all
> > that had to be said: "because we are idi
> > you mean 240V AC 50HZ and move from 120V 60Hz? (or also 50Hz)
>
> In US, I think everything is 60Hz. But I mean 208v single phase.
> (Which is what you get when you combine two 120v single phase legs out of
> three phase, I believe. I am not an expert on AC...)
That would be considered a 2
> I really want to move all newly installed internal and customer racks over to
> all 208v power instead of 120v. As far as I can remember, I can't remember
> any server/switch/router or any other equipment that didn't run on 208v AC.
> (Other than you may need a different cable) Anyone have any e
Uh... huh?
> Just so we are all straight and clear - wikileaks hit is not a
> 'Distributed' DoS, its a simple DoS - I dont use intermediaries or
> botnets. Sun Nov 16 - 15:28 EST
That would be just about 2 weeks ago.
>
> I'm not saying the problems are the same, but I am saying that a
> backplane making cooling "hard" is not a good excuse, especially when
> the small empty chassis costs $10K+.
And, not to mention that some vendors do it sometimes.
"The 9-slot Cisco Catalyst 6509 Enhanced Vertical Switch (6
> While this question has many dimensions and there is no real
> definition of either I suspect that what many people mean when they
> talk about a DC routers is:
>From the datacenter operator prospective, it would be nice if some of these
>vendors would acknowledge the need for front-to-back coo
We use products from Veris. If you could be more specific as to what you want
to meter (and where, and types / brands of panels), I could point you further.
> I am looking for suggestions on devices that can
> monitor(A)/meter(kw/h) power usage in a data center. Getting a
> metered PDU everywhe
> I'm aware of some (regular?) depeering issues. The NANOG archives have
AFAIR, there has never been a black-holing, just disappearance of routes. If
you are properly multihomed, this is irrelevant and you continue to eat your
ice cream and chuckle while they fight it out. It's amusing, really.
> > Even better would be all two pole 2 pole 480's or 2 pole 600's, then
> > we wouldn't need neutrals.
>
> Oh, yeah! Nothing sounds like more fun than working in a room full of
> 480 or 600 delta. I LIKE neutrals. (Sort of like I like continuing to
> have a functioning heart.)
Nobody said delta.
> I have a pure curiosity question for the NANOG crowd here. If you run
> your facility/datacenter/cage/rack on 120 volts, why?
Because we are stupid.
> I've been running my facility at 208 for years because I can get away
> with lower amperage circuits. I'm curious about the reasons for using
>
#x27;t, and had scores of contractors who say they know something and don't,
is in a much better position to talk about this than a PE who designs comfort
cooling systems.
"Question everything, assume nothing, discuss all, and resolve quickly."
-- Alex Rubenstein, AR97, K2AHR, a...
I wonder if having a spare card there would have been cheaper than this outage
and resulting flights and labour?
>
> Yup, there is a defective card in the Bahamas. They should be flying in
> this
> morning to have it replaced.
> It's been out since yesterday evening.
>
And it gets better:
AT&T to reduce workforce by 12,000 - AT&T Inc. will layoff 12,000 of its
employees, or 4 percent of its total workforce, in response to recent economic
pressures.
Sprint/Nextel has had negative net income of $326mm, $829mm, and $505mm for the
last three quarters.
Verizon s
> The AT&T (BellSouth) remotes around here installed in the last 10 years
> or so typically have natural gas generators installed, and the COs have
> a pair of generators for redundancy. Even many of the cell towers have
> generators. The telco infrastructure is pretty well backed up (I don't
> k
> I deliberated for a while on whether to send this, or not, but I figure
> it might be of interest to this community:
>
> http://techliberation.com/2008/12/04/telecom-collapse/
Good god. If there is even the mention of a LEC bailout, I am going to go
insane and probably shoot someone (those w
> So why do SPs keep depeering Cogent? Serious question, why? I'm not
> aware of any Intercage-like issues with them. I've actually considered
> them as a potential upstream when we expand into a market they serve.
Because some SP's still have a sour taste in their mouth about what Cogent did
> Google not counting electricity losses from power cords etc gives the
> image that it doesn't really want to account everything and want to
> skew the numbers as much as possible.
I don't agree with this.
It is commonly accepted that when computing DCIE/PUE, the point of
"demarcation" (used th
I only quickly read this, but have the following question, should google
like to answer it...
Of the six datacenters, where are they all physically located?
Someone should get on the bandwagon of having a PUE standard that is
climate based. A PUE of 1.3 in the Caribbean is way impressive than 1.3
I am looking for a Comcast tech to help us solve what may be a simple issue.
Normal channels have failed.
Find me at [EMAIL PROTECTED] please .. thanks!
We operate a transit box, and there are still quite a few of them out
there. Pushing hundreds and hundreds of megs.
http://news.anthologeek.net/
> -Original Message-
> From: Edward B. DREGER [mailto:[EMAIL PROTECTED]
> Sent: Wednesday, August 06, 2008 2:48 PM
> To: Robert E. Seastrom
>
We've started using ControlByWeb, specifically
http://www.controlbyweb.com/temperature/index.html .. POE, and handles
four probes. We just don't use their probes, we buy them elsewhere (it's
plain old one wire).
> -Original Message-
> From: Mike Tancsa [mailto:[EMAIL PROTECTED]
> Sent: F
> I hate to break the news to the New York bashers, but New York is one
of
> the safest American cities. This is not a controversial statement.
While I generally agree with what Rod is saying, saying "NYC is safe" is
like saying "all routers are cisco"
There are safe areas, and there are not safe
> I hate to break the news to the New York bashers, but New York is one of
> the safest American cities. This is not a controversial statement.
While I generally agree with what Rod is saying, saying "NYC is safe" is
like saying "all routers are cisco"
There are safe areas, and there are not safe
> > Sad that the little Telcove DC here in Lancaster, PA, that Level3
> > bought a few months ago, has weekly full-on generator tests where
> > 100% of the load is transferred to the generator, while apparently
> > large DCs that are charging premium rates, do not.
>
> Perhaps they do. Wouldn't
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