gmane.org.operators.dc-ops

Re: Hey, look!

david raistrick — 2013-03-13T20:31:53


what's a datacenter?  I don't think I've touched hardware in like 4+ 
years now... ;)


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Hey, look!

Jay Ashworth — 2013-03-13T15:43:49

It's the semi-moribund datacenter ops list!

Nothing's happening in datacenters anymore, eh?   Damn AWS.  :-)

To remind everyone this list (which isn't mine) is here, let me toss four
URLs over the transom, for the benefit of those who haven't run across them.

If you run a datacenter, you should probably keep an eye on:

  https://www.datacenterknowledge.com/

and

  http://www.telecomramblings.com/

Both are industry blogs which take different approaches to the space;
the former is about the stuff inside the walls, and the latter more 
about how you connect them to the people who matter.

===

For keeping track of when those links and services break, check out
the Outages mailing list and wiki:

  http://wiki.outages.org

We have a pretty decent collection of system status pages, along with
links to fiber and undersea cable maps, and other useful resources,
and our mailing lists, and contributions are always cheerfully accepted.

===

If you are in one, and wondering what you need in your Emergency Box,
y

The Verge article about Verizon's Sandy Cleanup Efforts inManhattan

Network IPdog — 2012-11-20T09:51:23

Et al,

I got some Copper going cheap. ;^(

I saw this on Reddit.... I figured I'd share it here too since no one else
did.

http://www.theverge.com/2012/11/17/3655442/restoring-verizon-service-manhatt
an-hurricane-sandy


Ephesians 4:32  &  Cheers!!!

A password is like a... toothbrush  ;^) 
Choose a good one, change it regularly and don't share it.



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The Verge article about Verizon's Sandy Cleanup Efforts inManhattan

Network IPdog — 2012-11-20T09:51:23

Et al,

I got some Copper going cheap. ;^(

I saw this on Reddit.... I figured I'd share it here too since no one else
did.

http://www.theverge.com/2012/11/17/3655442/restoring-verizon-service-manhatt
an-hurricane-sandy


Ephesians 4:32  &  Cheers!!!

A password is like a... toothbrush  ;^) 
Choose a good one, change it regularly and don't share it.



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Security Survey: Please Participate

Sockrider, Gary — 2012-09-17T17:17:32



[http://www.swiftpage1.com/CampResource/2T0ZVZBHI4PY5TEG/header.jpg]




________________________________
Arbor Networks would like to invite you to participate in our annual Infrastructure Security Survey - a survey of service providers, enterprises, government agencies, universities and other network operators around the world.

The purpose of the survey is to gauge and report on general security issues, practices, procedures and observations from the industry. All data gathered from the survey will be compiled in the aggregate and published as Arbor’s 8th annual infrastructure security report and accompanying presentations. Individual responses are treated anonymously and no respondent names will appear in the report or presentations. As a reference, you may access a copy of our 7th annual report here: http://pages.arbornetworks.com/rs/arbor/images/WISR2011_EN.pdf<http://www.swiftpage1.com/SpeClicks.aspx?X=2T0ZVZBHI4PY5TEG00Y9WW>

To participate in this year's survey, please click on the following li

Inside DCs

Jay Ashworth — 2012-02-21T14:41:05

We all know that there are some concerns that are important to you if you're
operating -- or operating in -- an outside data center, like a colo.

Are there any specific considerations that are important to you in the 
reverse situation: things that matter to a corporate DC but not to a 
commercial one?

One specific point: anyone got any comparative safety information for
diesel vs LPG fueled gensets?  (80-100KW range)

Cheers,

Extreme Networks' latest switch

Network IP Dog — 2012-01-12T19:54:33

Hi!

Anybody have any experience with Extreme Networks' latest switch, the
BlackDiamond X8?

They state it takes up one-third of a data centre rack and has a switching
capacity of over 20Tbps, 
or 1.28Tbps per slot. It can support 768 wire-speed 10G Ethernet ports.

Ephesians 4:32  &  Cheers!!!


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Re: proximity/HID card system recommendations?

Jay Ashworth — 2011-12-09T02:23:56

----- Original Message -----


Are you required to be certified, and does your certifying agency require that
such a system be designed or installed by a contractor who has their own 
certifications?

Cheers,

Re: General opinions about AC cooling..

Michael Balasko — 2011-12-09T00:21:10

So like someone said, it depends.  Depends on power densities per rack, the outside climate, what your goals are etc. With lame disclaimer in place I do know that hot aisle containment is the way to go. Overhead is king, and underfloor is like AM radio, decent and will run be around forever but if you can do the overhead option(FM) that is the way to go.

Take a peek at the book of faces open compute stuff for ideas -

http://opencompute.org/specs/


http://www.42u.com/cooling/data-center-containment-strategies.htm

and the guys that are REALLLLLLYYY Doing it right.


http://www.switchnap.com/pages/all-things-switch/the-supernaps.php



Michael Balasko
CCSP,CCNP,MCSE,SCP
Network Specialist II
City of Henderson
240 Water St.
Henderson, Nv 89015

Coincidence, n.:
  You weren't paying attention to the other half of what was going on.

On Nov 28, 2011, at 11:07 AM, Eric Tykwinski wrote:

What do you guys think about ditching crac units and raised flooring?

We’re still in the planning stages of building out a

proximity/HID card system recommendations?

randal k — 2011-12-08T23:46:54

Datacenter Ops!

We're looking at integrating our multiple datacenters' door lock / badging
systems into a single system. We use HID proximity cards everywhere, so it
needs to work with those (and hopefully some generic readers?). We're after
something that is hierarchical, that has a centralized control point, that
then pushes configs to the controllers that manage each facility. Of course
it all needs to be IP enabled. We are very much interested in
do-it-yourself, as the "integration and installation" quotes from the
vendors we've seen tend to be astronomical.

Anybody have any experience on this that they'd like to share?

Thanks!
Randal
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Re: General opinions about AC cooling..

Matt Addison — 2011-12-02T04:34:49

We ended up doing water underfloor, overhead just got too much market
pushback in the research we did- even if pex looks good on paper.

Even with in row and containment you'll still end up with a couple of CRAC
units with compressors and water cooled condensers to maintain humidity,
since you'll typically want to run the chilled loop at a non condensing
temperature so you don't need to collect condensate at every inrow.

Sent from my iPad

On Nov 30, 2011, at 11:32, randal k <rkohutek+dc-Re5JQEeQqe8AvxtiuMwx3w< at >public.gmane.org> wrote:

Eric,
Slab floors and in-row are all the rage these days. With containment, they
can be extremely efficient. The biggest upside for us as a public colo
facility is being able to build tremendous outside plant up front (water
tower, pumps, chillers) and then being able to incrementally add-on
targeted in-row cooling as needed. Also, the water-only in row units are
dirt cheap (they're a coil+fans, no compressor).

It also avoids the inevitable under-floor rats nest - going over

Re: General opinions about AC cooling..

randal k — 2011-11-30T16:32:17

Eric,
Slab floors and in-row are all the rage these days. With containment, they
can be extremely efficient. The biggest upside for us as a public colo
facility is being able to build tremendous outside plant up front (water
tower, pumps, chillers) and then being able to incrementally add-on
targeted in-row cooling as needed. Also, the water-only in row units are
dirt cheap (they're a coil+fans, no compressor).

It also avoids the inevitable under-floor rats nest - going overhead forces
you to plan & use troughs, which makes things easier down the road. Also
better on my knees :)

We learned our lesson the hard way - investing into a water+glycol solution
with DX cooling in each CRAC. More compressors, more maintenance, more
expensive CRACs (they have compressors + lot-o-logic :(  ... bleh.

On the other hand, a lot of folks are wary of overhead water.

I'm very interested in everyone's input here as well :-)

Randal
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Re: General opinions about AC cooling..

Kaj Niemi — 2011-11-29T11:09:10

Hi,


This is IMHO a 'it depends' kind of thing ;-) It might be good to know what
size of a facility you're looking at (100 m2, 1000 m2, 5000 m2).

Personally I've built DCs underground with inline cooling every N
cabinets/row and did not use raised flooring. There are a few things to
remember, namely when adding additional rows and inline units one needs to
carefully balance the network feeding the inlines both for volume and
pressure. Inline gets really expensive really fast, too, if you're not
careful. One needs to take in account (if you're into PUE gaming) that each
inline unit also consumes electricity.

A busway/busbar system gives you more flexibility on where to put your power
per row instead of using dedicated cabling direct from PDU. At the same time
if the busbar fails or PDU breaker trips where the busbar is connected it'll
take a quite large hit to your power distribution within the room.

I think your roof will be very heavily utilized if you place copper, fiber
and busway up there. Planning t

General opinions about AC cooling..

Eric Tykwinski — 2011-11-28T19:07:53

What do you guys think about ditching crac units and raised flooring?

 

We're still in the planning stages of building out a new Data Center.  

Since we are going for a Busway system for power, the only need for raised
flooring would be AC units.

We talked about doing in row AC units, but are now leaning more to redundant
commercial units, like Trane 30's.

Mainly the reason being outside air economizers, and other options that can
be built in from the factory.

I would guess as long as the filtration is good, there shouldn't be any
issues with the halon system or particles.

 

I don't see any issues with this setup, but would like to hear opinions from
both sides if possible.

 

Sincerely,

 

Eric Tykwinski

TrueNet, Inc.

P: 610-429-8300

F: 610-429-3222

 

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Cacti / APC PDUs and Fibrechannel

Jay Ashworth — 2011-11-07T14:38:02

I've set up Cacti for my new colo install, and mostly, it seems to be working
out pretty well for me.  I've got a couple of ACP 7841 PDUs though, that I'd
like to monitor the current draw through, and I can't seem to come up with 
a working template.  Anybody got one?

In a related story, has anyone got any good pointers to HOWTOs on setting up
FC-AL loops?  I've got adapters in all my machines, and I'd like to move my
Openfiler traffic from my 2960s over to that loop (I had an EMC24 switch I 
bought surplus, but it appears to be zorched).

And if I *do* move that traffic there, how would I measure it?

(Well, it's Datacenter 101 for *me*... :-)

Cheers,

Request for participation - Arbor 2011 Worldwide Infrastructure Security Report.

Dobbins, Roland — 2011-10-14T15:42:44

[Apologies if you've already seen this announcement in other forums.]

Request for participation - Arbor 2011 Worldwide Infrastructure Security Report. 

-----

Folks,

We're in the process of collecting survey responses for the 2011 Worldwide Infrastructure Security Report (WWISR); this is the Seventh Edition of the Report, and we'd really be grateful for your participation!  This is the only security-focused survey we're aware of which is specifically oriented towards those who design, build, operate, and defend public-facing network infrastructure/applications/services, and provides an opportunity to share your experiences and perspectives with your peers within the operational community, as well as to benefit from their shared experiences and perspectives.

The 2011 Infrastructure Security Survey is up and available for your input.  You can register and complete the survey via this URL, which will redirect your browser to the survey tool (the survey itself is accessed via http/s):

<http://www.arbornetw

Re: Starline Busway power distribution

Kaj Niemi — 2011-10-05T09:13:29

SKS Connecto makes busbar trunking systems for industrial use and their
stuff can also be used in data centers. They're available in 125A-630A,
three-phase 480V feeds. SKS is priced more competitively than Starline (in
my experience).



Kaj

From:  Eric Tykwinski <eric-list-W7A0uRPXpNhBDgjK7y7TUQ< at >public.gmane.org>
Date:  Fri, 30 Sep 2011 12:12:10 -0700
To:  "dc-ops-li9M/SLukx2qCAfHTHLC4A< at >public.gmane.org" <dc-ops-li9M/SLukx2qCAfHTHLC4A< at >public.gmane.org>
Subject:  [dc-ops] Starline Busway power distribution


Since Tom Walsh mentioned this in one of his posts, we¹ve been looking into
the system.
Does anyone know of any competitors or similar power distribution systems
out there?
 


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Re: Starline Busway power distribution

Tore Anderson — 2011-10-03T06:52:04

* Eric Tykwinski


Canalis by Schneider Electric is pretty common here in Scandinavia.

Re: Starline Busway power distribution

Matt Addison — 2011-10-02T00:36:57

PDI have a competing system which goes up to 400A/busway, and has a
monitoring option.

Sent from my mobile device, so please excuse any horrible misspellings.

On Sep 30, 2011, at 15:51, Eric Tykwinski <eric-list-W7A0uRPXpNhBDgjK7y7TUQ< at >public.gmane.org> wrote:

Since Tom Walsh mentioned this in one of his posts, we’ve been looking into
the system.

Does anyone know of any competitors or similar power distribution systems
out there?



Sincerely,



Eric Tykwinski

TrueNet, Inc.

P: 610-429-8300

F: 610-429-3222



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Starline Busway power distribution

Eric Tykwinski — 2011-09-30T19:12:10

Since Tom Walsh mentioned this in one of his posts, we've been looking into
the system.

Does anyone know of any competitors or similar power distribution systems
out there?

 

Sincerely,

 

Eric Tykwinski

TrueNet, Inc.

P: 610-429-8300

F: 610-429-3222

 

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40G/100G for enterprise data centers

David Newman — 2011-09-29T22:09:43

For an article I'm writing for Network World, I would be grateful to
interview network architects as to how (or whether) 40G and/or 100G
Ethernet will change enterprise data centers and/or enterprise campus
networks.

Interviews can be with or without attribution, and can be conducted over
email or phone.

Please contact me offlist if interested. Thanks in advance.

Regards,
David Newman
Network Test