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Thread: Telecity

  1. #46
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    Quote Originally Posted by uk26 View Post
    So its better to choose a provider who already has a direct feed with BT to keep costs down?

    the two providers we have, i don't think they have BT
    From their looking glass, AI Networks look to see BT via AS3257 (GTT). The path from BT back to AI is either AS3257 or AS174 (Cogent).

    Not sure if Joe has a publicly accessible looking glass, but BT see TeleMagic via AS2914 (NTT). The TeleMagic web site says that they use NTT and Cogent for IP transit, so the outbound route will be one of those two.
    Freethought Internet
    Freethought Internet Limited registered in London No. 5862996. Registered office: The Old Church Hall, 2A Cromwell Street, Lincoln, LN2 5LP. VAT number GB 987 0952 66.

  2. #47
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    Thanks Ed-Freethought for the info.

  3. #48
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    Ed Is correct and we dont currently peer with BT. They have a bandwidth requirement for peering which we havent met yet. We are in the middle of an aquisition which with the combined traffic and your usage if it is high enough will likely push us to the point that we meet the requirement and we would then peer with BT.

  4. #49
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    We are not a large user by any means, at the other data centre we only transfer 12.8TB per month so not a lot really. Last 24 Hours based on 95% In 10.68mbps / Out 10.17mbps

    Most of our usage is VoIP related and during peak times i suspect this to be peaking at 15-20Mpbs Up/Down

    if BT is based not on actual usage but per Mb commitment, then we may be able to help out by purchasing a higher commitment above the 50Mbps already ordered.

    I suspect our 42U rack to be full within 12 months however like always i suspect we will hit the power limit before the ability to fill every U of space.


    Quote Originally Posted by Joe-HT View Post
    Ed Is correct and we dont currently peer with BT. They have a bandwidth requirement for peering which we havent met yet. We are in the middle of an aquisition which with the combined traffic and your usage if it is high enough will likely push us to the point that we meet the requirement and we would then peer with BT.
    Last edited by uk26; 24th January 2016 at 10:45 AM.

  5. #50
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    Trying to work out how many servers i can put into the rack with 2Kw of power.

    We will be using a Dell Poweredge 1950 v3 for the software router and Dell R430 for servers

    I suspect the R430 to use no more then 1.2amp MAX but the 1950 maybe 2Amps (Dell 1950 Dual 750Watt PSU and R430 Dual 550Watt) based on the total watt for each server totals 1300 watts or 1.3KW max power

    is it me or based on the power of 2kw, its unlikely you will ever be able to actually make full use of the rack?

  6. #51
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    Quote Originally Posted by uk26 View Post
    Trying to work out how many servers i can put into the rack with 2Kw of power.

    We will be using a Dell Poweredge 1950 v3 for the software router and Dell R430 for servers

    I suspect the R430 to use no more then 1.2amp MAX but the 1950 maybe 2Amps (Dell 1950 Dual 750Watt PSU and R430 Dual 550Watt) based on the total watt for each server totals 1300 watts or 1.3KW max power

    is it me or based on the power of 2kw, its unlikely you will ever be able to actually make full use of the rack?
    You can use the Dell ESSA and DCCP calculators at ESSA | Dell to get a pretty good idea of power usage (assuming that you don't have the hardware all in one place yet and so you can't just measure it).

    You might be able to fill a 2kW rack with the R230 (depending on spec), but anything more than that and you're going to have lots of empty space.

    We generally use 20-24A in a full rack.

    Why does filling the rack matter though? Surely you buy based on how much space+power you need now/in the near future and then buy more when you run out of one or both?
    Freethought Internet
    Freethought Internet Limited registered in London No. 5862996. Registered office: The Old Church Hall, 2A Cromwell Street, Lincoln, LN2 5LP. VAT number GB 987 0952 66.

  7. #52
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    just trying to plan ahead really, shame to be forced to get a second rack when the first is only half used but due to power usage you cant put more hardware in.

    i think the max Volta do is 4Kw per rack which is around 16amp


    Quote Originally Posted by Ed-Freethought View Post
    You can use the Dell ESSA and DCCP calculators at ESSA | Dell to get a pretty good idea of power usage (assuming that you don't have the hardware all in one place yet and so you can't just measure it).

    You might be able to fill a 2kW rack with the R230 (depending on spec), but anything more than that and you're going to have lots of empty space.

    We generally use 20-24A in a full rack.

    Why does filling the rack matter though? Surely you buy based on how much space+power you need now/in the near future and then buy more when you run out of one or both?

  8. #53
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    Quote Originally Posted by uk26 View Post
    just trying to plan ahead really, shame to be forced to get a second rack when the first is only half used but due to power usage you cant put more hardware in.
    Surely adding more power is just a contract change? i.e. there's no difference in the provisioning of the 2kW and 4kW racks

    Quote Originally Posted by uk26 View Post
    i think the max Volta do is 4Kw per rack which is around 16amp
    That seems rather low for a modern data centre!
    Freethought Internet
    Freethought Internet Limited registered in London No. 5862996. Registered office: The Old Church Hall, 2A Cromwell Street, Lincoln, LN2 5LP. VAT number GB 987 0952 66.

  9. #54
    Registered User Array
    Quote Originally Posted by Ed-Freethought View Post
    Surely adding more power is just a contract change? i.e. there's no difference in the provisioning of the 2kW and 4kW racks

    !
    Correct, up to the max of 4Kw

    Quote Originally Posted by Ed-Freethought View Post
    That seems rather low for a modern data centre!
    i thought the max at Telecity and the like was a max of 16amps

  10. #55
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    Quote Originally Posted by uk26 View Post
    i thought the max at Telecity and the like was a max of 16amps
    Depends which TC site, have a feeling in some of the older places like MER & SOV getting 16amp racks is nigh on impossible
    Simon Gunton
    The views expressed in the above post are mine alone and not necessarily those of anyone else

  11. #56
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    You can definitely get more than 4kW in a rack @ Volta. It may be that your footprint has a max of 4kW, but we have quoted customers for 4kW+ in Volta on many occasions. I believe their busbar system allows a quick swap from single phase to 3 phase power and the in row cooling means they can provision very high density racks. Hell on their website it is stated they can provide 20kW racks!

    Like I said, it might be as simple as they have put you in a pod where the maximum power is 4kW a rack due to the location of the in-row coolers. Might be worth double checking with your account manager.
    Volkan Dil | EX Networks - www.exn.uk
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  12. #57
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    Thanks, i think we should be ok on 4KW for a good while. but its worth finding out from our account manger. he is at our office in the morning so i will ask.

    Quote Originally Posted by EXN-Volkan View Post
    You can definitely get more than 4kW in a rack @ Volta. It may be that your footprint has a max of 4kW, but we have quoted customers for 4kW+ in Volta on many occasions. I believe their busbar system allows a quick swap from single phase to 3 phase power and the in row cooling means they can provision very high density racks. Hell on their website it is stated they can provide 20kW racks!

    Like I said, it might be as simple as they have put you in a pod where the maximum power is 4kW a rack due to the location of the in-row coolers. Might be worth double checking with your account manager.

  13. #58
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    Quote Originally Posted by uk26 View Post
    i thought the max at Telecity and the like was a max of 16amps
    Most of the Telecity data centres aren't modern by any stretch of the imagination though - many are ~15 years old and some were originally Redbus Interhouse or Globix sites!

    These older sites were generally built out for 8A/rack or less! Parts of them have been refurbished in the mean time of course, but there are limits to what you can do.

    The only really modern sites that they had were PowerGate and Joule House. Some bits of Harbour Exchange were quite new from when they joined HEX 6-7 and HEX 8-9 a couple of years ago.

    Volta is a new site which whilst it used to be operated as a data centr by Reuters and then BT, was completely gutted and refitted from scratch for its current guise. One of the big reasons that Volta took it one was the amount of power available to the building (along with the good connectivity).

    Truly modern data centres should be good for at least 7.5kW per rack.
    Ricky likes this.
    Freethought Internet
    Freethought Internet Limited registered in London No. 5862996. Registered office: The Old Church Hall, 2A Cromwell Street, Lincoln, LN2 5LP. VAT number GB 987 0952 66.

  14. #59
    Registered User Array
    thank god i posted on this forum on this subject otherwise i would have signed contracts with Telecity and had limits imposed on us.

    i'm impressed with the turn around at Volta, within a few hours of signing the contract, the cross connect orders was placed and the work completed that night. they even had the contract to me the same day as requested unlike telecity 3 to 4 days.

    Quote Originally Posted by Ed-Freethought View Post
    Most of the Telecity data centres aren't modern by any stretch of the imagination though - many are ~15 years old and some were originally Redbus Interhouse or Globix sites!

    These older sites were generally built out for 8A/rack or less! Parts of them have been refurbished in the mean time of course, but there are limits to what you can do.

    The only really modern sites that they had were PowerGate and Joule House. Some bits of Harbour Exchange were quite new from when they joined HEX 6-7 and HEX 8-9 a couple of years ago.

    Volta is a new site which whilst it used to be operated as a data centr by Reuters and then BT, was completely gutted and refitted from scratch for its current guise. One of the big reasons that Volta took it one was the amount of power available to the building (along with the good connectivity).

    Truly modern data centres should be good for at least 7.5kW per rack.
    markcastle likes this.

  15. #60
    Array
    Meridian is dependant on the floor. Our original Cage was 16kw across 4 racks so 4kw per rack. We now have 20kw across 8 racks but with the option of more power if we need it.

    Volta are pretty good at provisioning to be fair. They quote 5 days on a cross connect but often provision it the same night!

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