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Question

What is the best way to connect 2 Sans together tht are about 800 metres apart, within the same physical building (hosptal) for the purposes of replication.

Have the following:

Site 1 has 2 Silkworm 24000 switches with a Clariion attached an a few hosts.

Site 2 has 2 Brocade 200E's again with a Clariion and some hosts attached.

I want to replicate from 1 Clariion to the other, and have a resilient network.
Each site has 2 fabrics configured, how many more should i configure ?
Should I buy any additional switches, Directors or just connect the existing switches together ?

RRR · Accepted Answer

So there you go:make sure you buy some long wave (medium range if available) SFP's for your switches and of course single mode (9/125) cable.I wonder whether or not we've now answered the question.....

Mabro1 · Answer

Hi emcadmin,I am the moderator for this forum and I notice you have not yet received a reply or answer to your question. Unfortunately I do not have the technical information required to answer your question. I would advise you to log a Service Request with EMC thoru our PowerLink website, if this issue is urgent in order to get a more prompt response. Kind regards,Mark Browne

VKR-f4y7L · Answer

Hi ,I think if you can afford a direct connection between the switches that should be good enough. 2 resilient fabric would be enough .You can set-aside some ports as ISL on both the switches , connect them together and you should be able to zone both the clariions .Just make sure you change the port which you plan to use as E ports

RRR · Answer

800 meters is a bit too far to simply start using ordinary ports, so you would need to buy long wave SFP's to be able to push traffic over 800 meters. Per switch, per ISL you need a long wave SFP, so if you connect each set of 2 switches with 1 ISL, you need 4 lw SFP's (1 per switch). If you connect each set with a redundant set of 2 ISL's, you need 2 lw SFP's per switch, so 8 in total.

Allen Ward · Answer

As RRR mentioned this would definately be a longwave run, but the other thing you have to make sure you plan for (budget for) if you are going to do this is single mode fiber to make the run. If you are running multiple connections over 800 meters you should know before you buy cab;es that longwave is going to require 9 micron single mode fiber (usually the yellow stuff not the orange stuff) to make the connection.

Assuming you are not going to buy 800 meter patch cables (*lol*) any good fiber installer should know this anyway, but I just wanted to make sure since a lot of people who don't work with long distance (or FICON on the mainframe) aren't aware of single mode.

faisalchoudry · Answer

I'd forgotten about this - going back a couple of years - thanks all for your help and advise back then, the job went fine. I've checked this post off as 'answered'.

faisalchoudry · Answer

I've never noticed that button before ..... for most helpful posts ! ....now I know.

RRR · Answer

I'm trying not to beg, but did you reward the most helpful posts as well as correct and helpful ? Thanks

RRR · Answer

Spread the word

dynamox · Answer

https://community.emc.com/thread/127108

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