> AFAIK, low end zseries is about 1,200,000.
> 
> http://www-1.ibm.com/servers/eserver/zseries/linuxconfig/

mind you, that's a brand-new z900; including a year of support.

if you get a used Multiprise 3000; I hear they can be had for a few hundred
thousand. mind you; you'll still need the support contract, and a disk
array for it. (I think they come with only 3 SCSI disks).

Disk arrays for those things are not cheap, mind you. You could probably
cobble together some sort of SAN arrangement; but even over GigE, you're
really going to hurt the I/O performance of a 390; which is its main
strength.

Anyone know what a StorageTek, IBM, or EMC array for an S/390 costs? just
for a couple hundred GB. (I think they're just ordinary fiber-attached
arrays now).

then of course, there's the cost of doing backups. (which actually might not
be bad for only a couple hundred GB.)

so yeah; they beat discrete boxes for cost, and beat just about anything
else for I/O performance (which is what kills most webservers and dbase
servers anyway); but you have to look at replacing a couple of racks of
shiny new SPARCs, or a handful of racks of shiny new PCs before they become
really cost-effective.

of course, the bragging rights are what really make it worthwhile. :)

Carl Soderstrom.
-- 
Network Engineer
Real-Time Enterprises
(952) 943-8700