You can not just take the isolated cpu-hw-cost and compare. Also include in HWcost all maint with HW, like connecting-power-cables-boxes and so on. With many blades you have to keep all these switches and cables in order. Just the simple case install a new server includes bying the HW, carry it into the server hall (you will need authorithy which often means you have to wait for the guy with the 'key') connect them (is there enough power in you diesel-backup?) add cables to a switch (which switch and who documents this) and the installing. There is some manhour here. By now you probably also have a different box, not the same as the existing ones, and you can not guarante exact same hw, maybe different drivers for new bios/network/disks/SCSI adapters...... Some customers requires exactly same setup for test-QA-prod, that may now be hard to get. Include all that and: When you have 200 Linux servers, do the calculation, and you will se that the z alternative will have about the same hw-cost as x86 blades.
If you also include the license costs, the z maybe comes out as the most cost-effective one. Cordialement / Vriendelijke Groeten / Best Regards / Med Vänliga Hälsningar Tore Agblad Volvo Information Technology Infrastructure Mainframe Design & Development SE-405 08, Gothenburg Sweden E-mail: [email protected] http://www.volvo.com/volvoit/global/en-gb/ ________________________________________ From: Linux on 390 Port [[email protected]] On Behalf Of Ivan Warren [[email protected]] Sent: Friday, June 19, 2009 01:39 To: [email protected] Subject: Re: FW: Rules of Thumb > In my Linux Installation Planning talks, I address this briefly. Until such > time as IFL processors cost the same as Intel processors, i.e. never, there > will always be some point along the spectrum of workload profiles where it > makes more sense to run a given application on midrange hardware and not the > mainframe. With the introduction of the z10, that point has moved > considerably, in favor of the mainframe. There is still going to be a > substantial grey area before that point, which is why each case needs to be > examined individually to make the correct decision. > > Amen ! --Ivan ---------------------------------------------------------------------- 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 ---------------------------------------------------------------------- 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
