> What's the current architecture? > > tv Tony,
Good question. For this portion of the data center it is more traditional. By that I mean these 6509 switches provide the Layer 2 connections to the servers. The 6509s have dual uplinks to an Agg layer. The Agg layer hosts the default gateways using HSRP. All connections are copper. They're a home run connection from the servers to a patch panel near the switches. Then a small jumper from the patch panel to the switch. -chris > ----- Original Message ----- > From: <[email protected]> > To: <[email protected]> > Sent: Thursday, December 17, 2009 4:25 PM > Subject: [c-nsp] Data Center switch replacement > > >> Sometimes the simplest things can grow into the biggest projects. >> >> For those of you that provide or support large data centers, I have a >> situation that I'd like to pick your brains about. >> >> We have some older switch gear that needs replaced because line cards >> are >> beyond MTBF and several have failed recently. Because of these outages >> the >> need to upgrade isn't a hard sell. We already have the new gear on hand. >> >> The challenge is in the migration to these new switches. The four >> switches >> are deployed as pairs. One switch of a pair is the primary link for >> servers and the other switch is the secondary link for servers. >> >> I have two options I'm kicking around. The first and most disruptive is >> to >> power down a switch, unplug the cables, remove the switch from the rack, >> install the new switch and plug the server connections in. My clients >> are >> pushing hard against this option because of the downtime involved. The >> second option is to stand up the new switches in other places within the >> data center and run patch panel to patch panel connections. This would >> provide for much less down time (est. 30 seconds per server) but would >> incur a pretty hefty cabling cost. Of course, money is an issue. >> >> In the end I realize someone will have to evaluate the trade off and >> tell >> me to either execute and take the customers down or pay the piper, buy >> the >> additional cabling and minimize the impact to the customers. >> >> I'm curious to know how other folks have approached this situation >> before? >> How do you move 600+ server connections from an old switching >> environment >> to a new switching environment? Since we're experiencing outages, time >> is >> a piece of the equation. >> >> Thanks, >> -chris >> >> _______________________________________________ >> cisco-nsp mailing list [email protected] >> https://puck.nether.net/mailman/listinfo/cisco-nsp >> archive at http://puck.nether.net/pipermail/cisco-nsp/ > > _______________________________________________ > cisco-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ > _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
