Linked by David Adams on Thu 3rd Mar 2011 20:23 UTC, submitted by Amy Bennett
Hardware, Embedded Systems IDC's newest survey of server vendors shows boxes running every kind of operating system -- except Unix -- sold more during the last three months of 2010. Sales of Linux servers rose 29 percent; Windows rose 16.8 percent, but most surprisingly, sales of mainframes shot up 69 percent " the highest growth rate IDC ever found on mainframes.
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Subcomputer
Member since:
2011-01-21

Yeah, I'm curious as to how Linux on the mainframe evolves in the future, since the systems really are that different.

There's really two reasons to be using a mainframe these days, and cpu power certainly isn't one of them. They really are designed for two things these days - massive database loads, and reliability. There's a reason a good percent of banks and insurance companies have mainframes, they have ridiculous levels of i/o compared to your average system.

As far as reliability, not only are the processors mirrored into a form of raid-1, with the z196 they've introduced raid for ram as well. Then of course you use parallel sysplex to mirror a few entire systems. There's always a market for reliability like that. It may not be large, but until x86 systems start offering similar facilities the mainframe won't be going away.

Reply Parent Score: 1

Kebabbert Member since:
2007-07-27

There's really two reasons to be using a mainframe these days, and cpu power certainly isn't one of them. They really are designed for two things these days - massive database loads, and reliability.
...
There's always a market for reliability like that. It may not be large, but until x86 systems start offering similar facilities the mainframe won't be going away.

I doubt x86 will offer similar reliability, as x86 is too buggy and bloated. To get reliability, you need Mainframes / SPARC / POWER / Itanium. For instance, some SPARC cpus can rollback and replay instructions if something went wrong, just like Mainframes. Such functionality does not help performance, and it cost a fortune to implement.

Reliability (Mainframes) and performance (x86) are contradictory, pick one of them.

Reply Parent Score: 2

kvarbanov Member since:
2008-06-16

I can pick third variable in this not-so-simple equation - cost. If you were to buy hardware (with or without software) you have to be perfectly aware what's going to run on top of it. If you are not sure, just buy a Dell appliance, for example, R710, and install whatever you wish on it - Red Hat, Novell suite, MS or even Solaris. That's a good deal in terms of price. Sun and IBM have nothing to offer against it, again price-wise.

Reply Parent Score: 1