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Hardware Thread, Fiber for Fiber Channel in Technical; Just want a quick check Need to replace some FC leads for shorter ones but can't make out the information ...
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    glennda's Avatar
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    Fiber for Fiber Channel

    Just want a quick check

    Need to replace some FC leads for shorter ones but can't make out the information on the current lead. I think i need OM3 50/125um for 8GB F/C (1m in length).

    That sound ok?

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    glennda's Avatar
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    *Bump*

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    What's the kit they are being plugged in to? Maybe the spec of that will help?

    Ben

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    glennda (8th March 2012)

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    Yes that sounds OK to me. OM3 is generally green in colour and OM2 orange in colour, but I am sure you know this.

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    glennda's Avatar
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    Quote Originally Posted by plexer View Post
    What's the kit they are being plugged in to? Maybe the spec of that will help?

    Ben
    HP MSA2000 and HP 8/20Q FC switch

    Quote Originally Posted by Michael View Post
    Yes that sounds OK to me. OM3 is generally green in colour and OM2 orange in colour, but I am sure you know this.
    I Didn't know that! I think they bought something like this. But I think one of my Fibre leads is damaged as when you scan disks on one host you get no errors when scanning disk from other host you get errors every so often.

    That HP thing doesn't say the type of fiber
    Last edited by glennda; 8th March 2012 at 08:07 PM.

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    Fibre is generally quite robust, but due to the thinness of it, it's easy to kink. On your link the cables are orange, so they're probably OM2 50/125um or possibly OM2 62.5/125um. They look exactly the same and you can only tell from the print on the cable itself. I do sympathise though as I've come across cables where you can't tell as well.

    To be honest, you should be able to install OM3 50/125um even if OM2 50/125um is currently being used. They'll work just fine.

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    glennda (8th March 2012)

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    glennda's Avatar
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    Quote Originally Posted by Michael View Post
    Fibre is generally quite robust, but due to the thinness of it, it's easy to kink. On your link the cables are orange, so they're probably OM2 50/125um or possibly OM2 62.5/125um. They look exactly the same and you can only tell from the print on the cable itself. I do sympathise though as I've come across cables where you can't tell as well.

    To be honest, you should be able to install OM3 50/125um even if OM2 50/125um is currently being used. They'll work just fine.
    Awesome Thanks - just wanted to check myself

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    Off the top of my head, ours is 50/125 LC-LC OM2 running 4Gb/s on IBM DS3400
    I could check this on Monday.

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    I was consulting a DS3400 manual for something else and found:


    v The following are the recommended maximum cable lengths.
    – 1 Gbps: 500 meters 50/125 um fiber, 300 meters 62.5/125 um fiber
    – 2 Gbps: 300 meters 50/125 um fiber, 150 meters 62.5/125 um fiber
    – 4 Gbps: 150 meters 50/125 um fiber, 70 meters 62.5/125 um fibe

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