You should do the total cost calculation first. We usually discover that about half the total cost of a server is manhours, then there is software(licenses) and monitoring backup and such things. Cost left for hardware always below 20%, sometimes quite below. And surprisingly the x86 platform doesen't differ much from this. Normally cheaper hardware, but more software licenses due to more cpucores. So in total it's more to choose the right application/load for each platform.
And ask t Z-guy if he by 'free capacity' means you can have it for free or with a discount :-) ________________________________________________ Tore Agblad System programmer, Volvo IT certified IT Architect Volvo Information Technology IMO Mainframe Databases & zOpen Gothenburg Dept. DE56430 SE-405 08, Gothenburg Sweden Telephone: +46-31-3233569 E-mail: [email protected] http://www.volvo.com/volvoit/global/en-gb/ -----Original Message----- From: Linux on 390 Port [mailto:[email protected]] On Behalf Of Alan Cox Sent: den 30 oktober 2012 11:42 To: [email protected] Subject: Re: Hurricane webserver On Tue, 30 Oct 2012 11:01:59 +0200 Roger Evans <[email protected]> wrote: > We are in the process of moving an apache webserver with windows to > nginx on zLinux. > > We use Redis and Memcached already on intel castoff machines. > Management is uncomfortable with this situation and wants us to get > everything on 24/7 supported hardware. My plan was to buy a 1-u intel > server with lots of memory and put both there. But our Z enthusiast > says we can put Redis and memcache on Z-Linux (under VM) without any > loss of functionality or performance (because we have extra capacity and > "paging on Z doesn't cost anything"). The idea of memcached is to use vast quantities of cheap PC memory to reduce latency to the very minimum. Putting it on Z seems bizarre given its got fast I/O and very very expensive memory which are exactly what memcached is not designed for. I'd have thought a pair of PC class boxes with ECC RAM would be a better fit. Alan ---------------------------------------------------------------------- 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 more information on Linux on System z, visit http://wiki.linuxvm.org/ ---------------------------------------------------------------------- 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 more information on Linux on System z, visit http://wiki.linuxvm.org/
