>>>>> "Ed" == Ed Quinn <[email protected]> writes:
Ed> I'm looking for some free advice and was referred here by an Ed> expert. Ed> What I'd like to set up is a link between two data centers. The Ed> idea is to connect two clustered hosts running a DEC operating Ed> system that provides load-balancing and volume shadowing across Ed> cluster members. I run that O/S at only one office in Portland Ed> right now but I'm trying to develop a disaster-avoidance concept. Ed> The software specs call for a 10 mbps or better link so a cheap Ed> 802.11g bridge looked good on paper. Location 1 is on a hillside Ed> with an unobstructed line of sight to a neighborhood three miles Ed> away and about 100 feet lower in elevation. I've got a couple Ed> Ubiquiti Bullet2 wireless units (2.4GHz) and am thinking about Ed> getting a couple 24dBi grid parabolic antennas such as Pacific Ed> Wireless DC24HDPF1PF-EZ. If I could get a couple laptops talking Ed> reliably then I'd have a demo for my boss. If not, then I'd have Ed> some almost-new gear to contribute to a worthy 501(c)(3) Ed> organization. Ed> So before I go embarrass my self too seriously I wanted to get Ed> your reaction. Would a setup like this be supportable from a Ed> networking point of view? Or should I be looking at heavier Ed> artillery? Pointers to FAQs are welcome, too. We did a link with 100mW radios, a 24dBi and a 19dBi antenna over 6 miles between Mt Tabor and Council Crest park a few years ago. I'd say a link if you have good line of sight and the fresnel zone is not obstructed too much. I am not sure what kind of throughput we had. At the time, I recall being tickled to pass traffic. I haven't checked the FCC regulations recently, but you might consider higher powered radios. The NanoStation2's go up to 400mW, though you'll need a pigtail to connect them to your antennas. The current bullets have somewhat lower transmit power. Given the modest cost of putting together a test rig, a few hundred dollars, it seems worth a try, considering the alternatives. It is possible that 2.4GHz noise will be a problem. You might consider 5.8 GHz as well. We might be willing to loan you a couple 27 dBi 5.8GHz antennas for a day, maybe in exchange for a couple NanoStation5's if the experiment fails. ;-) -- Russell Senior, Secretary [email protected] --~--~---------~--~----~------------~-------~--~----~ The Personal Telco Project - http://www.personaltelco.net/ Donate to PTP: http://www.personaltelco.net/donate Archives: http://news.gmane.org/gmane.network.wireless.portland.general/ Etiquette: http://www.personaltelco.net/index.cgi/MailingListEtiquette List information: http://lists.personaltelco.net To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] -~----------~----~----~----~------~----~------~--~---
