"Does that mean that potentially that 1 mainframe has the equivalent of at least 130 network cards? I can see how most of the hardware is virtualized, but the networking I don't quite see, yet. How does that part work?" ---------------------------------------------------------------------
(1) If these 130 servers communicated with each other a lot, then there is great savings by virtualization on the mainframe. On the mainframe IBM would have the traffic go on their Hypersockets, which basically passes it through memory. A good example of this is moving app servers and database servers on to the mainframe. Most of the traffic that they normally send is between each other. The same thing applies if they ftp data between themselves. (2) Even though there were 3,900 servers, they all may not have had 1 GB cards. Some were probably on 100 MB Ethernet. (3) Network traffic is like high way traffic. It varies greatly through the day. If IBM pooled servers that do processing based on geographic areas. Then they could end up with a nice mix. (4) Analyze the network traffic on your UNIX or Linux boxes. I'm sure you'll find that you're no where near capacity on your interfaces. If you are, it's most likely a spike that doesn't last that long. (5) By virtualizing servers and putting them on the mainframe, you cut down on the network traffic exponentially. The only network traffic you have is with servers and pc's that are not on that mainframe. (6) Trust me IBM did not randomly pick these 3,900 servers. -----Original Message----- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Lindy Mayfield Sent: Wednesday, August 01, 2007 6:22 PM To: LINUX-390@VM.MARIST.EDU Subject: Re: FW: IBM saves $250 million consolidating Linux servers on to mainframes | NetworkWorld.com Community Just curious, because I don't know how the hardware works, if 30 mainframes do the work of 3,900 servers, that means 1 mainframe does 130. Does that mean that potentially that 1 mainframe has the equivalent of at least 130 network cards? I can see how most of the hardware is virtualized, but the networking I don't quite see, yet. How does that part work? Lindy -----Original Message----- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Kelman, Tom Sent: 1. elokuuta 2007 20:49 To: LINUX-390@VM.MARIST.EDU Subject: Re: FW: IBM saves $250 million consolidating Linux servers on to mainframes | NetworkWorld.com Community This story is popping up all over the net. Money Magazine http://money.cnn.com/news/newsfeeds/articles/marketwire/0284973.htm PC World - no less http://www.pcworld.com/article/id,135331-c,servers/article.html Tom Kelman Commerce Bank of Kansas City (816) 760-7632 ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - This message is intended only for the personal and confidential use of the designated recipient(s) named above. If you are not the intended recipient of this message you are hereby notified that any review, dissemination, distribution or copying of this message is strictly prohibited. This communication is for information purposes only and should not be regarded as an offer to sell or as a solicitation of an offer to buy any financial product, an official confirmation of any transaction, or as an official statement of Lehman Brothers. Email transmission cannot be guaranteed to be secure or error-free. Therefore, we do not represent that this information is complete or accurate and it should not be relied upon as such. All information is subject to change without notice. -------- IRS Circular 230 Disclosure: Please be advised that any discussion of U.S. tax matters contained within this communication (including any attachments) is not intended or written to be used and cannot be used for the purpose of (i) avoiding U.S. tax related penalties or (ii) promoting, marketing or recommending to another party any transaction or matter addressed herein. ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
