Poll: Is the majority of your backbone in

Be advised that this is a public poll: other users can see the choice(s) you selected.

+ Post New Thread
Page 1 of 2 12 LastLast
Results 1 to 15 of 17
Hardware Thread, Cabling choice Fibre/Cat 5 or something else in Technical; Hi Was wondering what peoples opinions are on this. I am going to be looking at changing the schools backup ...
  1. #1
    ranj's Avatar
    Join Date
    Feb 2006
    Location
    Birmingham
    Posts
    733
    Thank Post
    101
    Thanked 42 Times in 32 Posts
    Rep Power
    25

    Cabling choice Fibre/Cat 5 or something else

    Hi

    Was wondering what peoples opinions are on this.

    I am going to be looking at changing the schools backup solution from tape backups to NAS storage. The plan is to have the NAS box on the other side of the school as an off site backup effecitively.

    Problem is the distance is about 150-200 metres. Fibre is what a lot of companies are recommending just because there is less likely for faults and copper maximum distance is only 100m but could be extended by using a hub for example.

    What sort of costs do you think would be to run some sort of cable, be it copper or fibre about 150metres. I would want a secondary cable run as well as a redundancy.

    It be interested to hear other peoples views on this.

  2. #2

    Geoff's Avatar
    Join Date
    Jun 2005
    Location
    Fylde, Lancs, UK.
    Posts
    11,850
    Thank Post
    110
    Thanked 598 Times in 514 Posts
    Blog Entries
    1
    Rep Power
    227

    Re: Cabling choice Fibre/Cat 5 or something else

    Fibre, given the distance and what the link is going to be used for.

  3. #3

    Join Date
    Nov 2006
    Posts
    547
    Thank Post
    0
    Thanked 1 Time in 1 Post
    Rep Power
    0

    Re: Cabling choice Fibre/Cat 5 or something else

    Fiber 8O

  4. #4

    webman's Avatar
    Join Date
    Nov 2005
    Location
    North East England
    Posts
    8,421
    Thank Post
    644
    Thanked 967 Times in 667 Posts
    Blog Entries
    2
    Rep Power
    328

    Re: Cabling choice Fibre/Cat 5 or something else

    Definately fiber, considering the 100m limit of Cat5e/6.

  5. #5

    broc's Avatar
    Join Date
    Jan 2006
    Location
    England
    Posts
    2,046
    Thank Post
    104
    Thanked 401 Times in 265 Posts
    Rep Power
    151

    Re: Cabling choice Fibre/Cat 5 or something else

    Fibre, for distance reasons but also I believe there are some electrical wiring regulations that prohibit connecting buildings with copper data cables, not sure of the details exactly (earthing, different power phases & lightning strikes comes to mind).

    We implemented something similar to what you are proposing a year or two ago when we ran fibre into our sports hall from the main school building. This was justified for staff in PE to be able to use electronic registration but it also let me install a budget SATA based server in a store cupboard for DR backups. We have just installed fibre to a couple of demountables in the playground too as they had to dig a trench for power & alarm cables anyway.

  6. #6

    plexer's Avatar
    Join Date
    Dec 2005
    Location
    Norfolk
    Posts
    13,683
    Thank Post
    755
    Thanked 1,715 Times in 1,526 Posts
    Rep Power
    438

    Re: Cabling choice Fibre/Cat 5 or something else

    Fibre here for all external backbone connections.

    For maximum redundancy run 2 four core fibres via different routes?

    Ben

  7. #7
    Midget's Avatar
    Join Date
    Oct 2006
    Location
    In a Server Room cutting through a forest of Cat5e
    Posts
    1,298
    Thank Post
    5
    Thanked 59 Times in 49 Posts
    Rep Power
    40

    Re: Cabling choice Fibre/Cat 5 or something else

    We have lots and lots of fibre each link at 1GB/s. If i get some more money and learn how to do it, i'll try to upgrade some of them to 2GB/s

  8. #8
    limbo's Avatar
    Join Date
    Aug 2005
    Location
    Birmingham
    Posts
    460
    Thank Post
    2
    Thanked 41 Times in 36 Posts
    Rep Power
    26

    Re: Cabling choice Fibre/Cat 5 or something else

    I would definately go fibre bearing in mind the amount of data - the closer you get to the 100m on copper the worse the packet loss can be so data can still get through at over 100m but anything from 80m onwards can be considerably slower.

    The Fibre itself is not hugely expensive - but it is what you stick at each end that can be the expensive bit. We upgraded our fibre links between our three main buildings (two 200m runs). These were 16core fibres and we are currently using eight cores accross each run to give 2 x 4Gb links.

    Of the toal cost less than a third was the fibre - the rest was the kit for each end.

  9. #9

    Join Date
    Jun 2005
    Location
    Kendal, Cumbria
    Posts
    616
    Thank Post
    60
    Thanked 67 Times in 44 Posts
    Rep Power
    43

    Re: Cabling choice Fibre/Cat 5 or something else

    always, always, always fibre!!!

    Indeed, the regulations do not allow for copper between separate buildings. Something to do with earthed voltage differences AFAIK. This was discussed on here last year I think but I can't find the relevant thread at present.

  10. #10

    bossman's Avatar
    Join Date
    Nov 2005
    Location
    England
    Posts
    4,035
    Thank Post
    1,262
    Thanked 1,107 Times in 785 Posts
    Rep Power
    338

    Re: Cabling choice Fibre/Cat 5 or something else

    A hub! do people still use these outmoded pieces of equipment?
    well all i can repeat is what other people on the forum are advising and that is fibre 10G spec if you can get it.

  11. #11
    krisd32's Avatar
    Join Date
    Feb 2006
    Location
    Longridge, Preston
    Posts
    545
    Thank Post
    85
    Thanked 68 Times in 47 Posts
    Rep Power
    43

    Re: Cabling choice Fibre/Cat 5 or something else

    I asked a similar question last year the distance wasn't the same but the principals will be!
    http://www.edugeek.net/index.php?nam...ewtopic&t=3732

  12. #12
    tosca925's Avatar
    Join Date
    Aug 2005
    Location
    Midlands
    Posts
    1,547
    Thank Post
    4
    Thanked 4 Times in 4 Posts
    Rep Power
    22

    Re: Cabling choice Fibre/Cat 5 or something else

    Fiber all through the backbone.

  13. #13

    Join Date
    Jul 2006
    Location
    London
    Posts
    2,963
    Thank Post
    160
    Thanked 153 Times in 117 Posts
    Rep Power
    50

    Re: Cabling choice Fibre/Cat 5 or something else

    All fibre here, the only copper link we've got just goes upstairs which is about 20 metres.

    About the external CAT5 though (I asked this on the other thread but didnt get a reply) why then have our cablers been allowed to run external CAT5 to a few terrapin buildings here? There would be no point running fibre to them as theres only 1 PC in each, and the distance from the other building is only a few metres

  14. #14

    plexer's Avatar
    Join Date
    Dec 2005
    Location
    Norfolk
    Posts
    13,683
    Thank Post
    755
    Thanked 1,715 Times in 1,526 Posts
    Rep Power
    438

    Re: Cabling choice Fibre/Cat 5 or something else

    Probably because no-one told them not too?

    That seems to be quite common, who were the cabling company?

    Ben

  15. #15

    Ric_'s Avatar
    Join Date
    Jun 2005
    Location
    Boston, MA
    Posts
    7,601
    Thank Post
    110
    Thanked 771 Times in 599 Posts
    Rep Power
    183

    Re: Cabling choice Fibre/Cat 5 or something else

    The reason for not running copper outside is that it is prone to lightning strikes... thus you need surge protectors. You also need to use high quality, external-grade cable which is significantly more expensive than your standard solid-core stuff.



SHARE:
+ Post New Thread
Page 1 of 2 12 LastLast

Similar Threads

  1. Help with iPod choice please.
    By Kyle in forum General Chat
    Replies: 17
    Last Post: 4th January 2007, 11:14 PM
  2. Network Switch Manufacturers - Your choice
    By u8dmtm in forum Hardware
    Replies: 28
    Last Post: 22nd March 2006, 03:53 PM
  3. Opinion on SLT final choice of laptops.
    By tosca925 in forum Hardware
    Replies: 13
    Last Post: 30th January 2006, 12:09 PM
  4. RIS OS Choice
    By paul in forum Windows
    Replies: 2
    Last Post: 3rd August 2005, 12:19 PM

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •