Microsoft building container based datacenter
Just a followup to the previous conversations on power and rack density I see that Microsoft has announced that one floor of their new Chicago datacenter will be container based. Each 40 foot container will house 1,000 to 2,000 systems with between 150 and 220 containers on the first floor. Main links: http://www.datacenterknowledge.com/archives/2008/Apr/01/microsoft_embraces_data_center_containers.html http://datacenterlinks.blogspot.com/2008/04/miichael-manos-keynote-at-data-center.html http://mvdirona.com/jrh/perspectives/2008/04/02/FirstContainerizedDataCenterAnnouncement.aspx Related link: http://www.datacenterknowledge.com/archives/2008/Apr/04/microsofts_198_megawatts_of_motivation.html -- Simon J. Lyall | Very Busy | Web: http://www.darkmere.gen.nz/ "To stay awake all night adds a day to your life" - Stilgar | eMT.
Re: Inventory and workflow management systems
On Apr 4, 2008, at 11:16 PM, vijay gill wrote: What software solution do people use for inventory management for things like riser/conduit drawdown, fiber inventory, physical topology store, CLR/DLR, x-connect, contracts, port inventory, etc. Any experiences in integrating workflow into those packages for work orders, modeling, drawdown levels, etc. /vijay Seen loads of the running, (Granite's Xpercom which I have used a lot in the POS industry and which is a pain, Telcordia which back then was known to be even worse...), none of them was worth a dime... Then I saw that brilliant combination which was Comptel + Visionael, it did mass provisioning and inventory systems for a whole national DSL unbundling architecture in France. Takes some time and patience to mix/tune them together, but once done ... Greg VILLAIN Independant Network & Telco Architecture Consultant +33 6 87 48 66 14
Comcast problems?
Anyone know what's going on with Comcast? From my house, I can reach a few sites with TCP (fortunately, that includes my office, so I could set up a web and email proxy). If I use traceroute, I can get more or less anywhere. If I use a UDP-based traceroute, I can get responses back from the first 8 hops. If I use a TCP-based traceroute, I get nowhere. The fact that I get different behavior for different protocols makes me suspect they're having trouble with equipment designed to control p2p traffic. Their help phone line simply speaks of an outage. Service has come back occasionally, but not for long. The problem has been going on since about 6am. Does anyone have any data? --Steve Bellovin, http://www.cs.columbia.edu/~smb
Re: Comcast problems?
On Sat, Apr 5, 2008 at 1:44 PM, Steven M. Bellovin <[EMAIL PROTECTED]> wrote: > The fact that I get different behavior for different protocols makes me > suspect they're having trouble with equipment designed to control p2p > traffic. Their help phone line simply speaks of an outage. Service > has come back occasionally, but not for long. The problem has been > going on since about 6am. > > Does anyone have any data? wasn't it sandvine last time? did you try calling them as well? All joking aside, one hopes that these sorts of things show that the 'p2p control' soutions are far from perfect and far from 'well baked' and likely still very ill-advised. -Chris
Re: Comcast problems?
I didn't save any of my Wireshark traces, but this is what I observed (I'm behind Charter at home but visiting my brother in NJ - Comcast territory). All attempts to check my e-mail (neither Charter nor Comcast) showed the syns going out but no syn acks coming back. Then, after a few minutes (pop server time outs I guess) I started seeing fins coming back from the pop server that matched my connection requests. Saw that occur with various http connection attempts as well. Of course, the only reason I can send this reply out is that they appear to be back up. Any chance of getting a non-nonsensical RFO from someone? Ted At 02:16 PM 4/5/2008, you wrote: On Sat, Apr 5, 2008 at 1:44 PM, Steven M. Bellovin <[EMAIL PROTECTED]> wrote: > The fact that I get different behavior for different protocols makes me > suspect they're having trouble with equipment designed to control p2p > traffic. Their help phone line simply speaks of an outage. Service > has come back occasionally, but not for long. The problem has been > going on since about 6am. > > Does anyone have any data? wasn't it sandvine last time? did you try calling them as well? All joking aside, one hopes that these sorts of things show that the 'p2p control' soutions are far from perfect and far from 'well baked' and likely still very ill-advised. -Chris
Re: Comcast problems?
Ted Fischer wrote: I didn't save any of my Wireshark traces, but this is what I observed (I'm behind Charter at home but visiting my brother in NJ - Comcast territory). All attempts to check my e-mail (neither Charter nor Comcast) showed the syns going out but no syn acks coming back. Then, after a few minutes (pop server time outs I guess) I started seeing fins coming back from the pop server that matched my connection requests. Saw that occur with various http connection attempts as well. Of course, the only reason I can send this reply out is that they appear to be back up. Any chance of getting a non-nonsensical RFO from someone? TCP performance on my Comcast connection in the Bay Area was horrible last night. tcpdump showed lost segments, dup acks, etc. Moreover, the UDP traceroute I did showed high packet loss, with outbound traffic from my connection draining to ATT (AS7012) immediately upstream. Today, the performance is much better, with traffic draining to Level(3)(AS3356) and no ATT in the picture. michael
