Hi Terry, When we started our Linux on Z one of the first machines that has been moved to this platform is a datawarehouse database. This database holds some 500G (IIRC) and runs 2 entire IFL's. It could run even more if we had more IFL power available.
As for the reason why anyone would stay on for instance solaris. In some cases it can be "just because we've done this already". Or perhaps because of some tools that are in use. And in some cases there can be a problem with a software product that is not (yet) supported on Z or on the specific Linux release. I don't think it's related to the capabilities of Linux on Z as such. But sometimes tuning can be a problem because tuning in a shared environment can mean you'd have to find new settings and knobs. At the very least I'd move a large database to the mainframe to take advantage of the IO capabilities of the mainframe. But make sure you know and understand tuning before moving large databases (just to avoid a disapointed customer due to performance issues). But in the end it all has to do with cost. So make sure you get the numbers. And make sure you get ALL numbers, not only CPU or DASD but also the costs (or rather savings) in floorspace and power. Remember that you are not necessarily be better off with just one Linux machine on an LPAR. The added bonus is that you can run multiple machines, either on VM or multiple LPAR's, with shared resources (CPU, storage, floorspace, power etc). Some people tend to look only at one server for their calculations and ignore the fact that you can (and will) be sharing resources. So present the big picture to your management. As for my LPAR's, we run one or two large machines to account for the IFL's and storage of the LPAR. And a number of small little used machines that will hitch a ride on the spare capacity. And that will be your cost saver. After all, where can you find a test server that cost you almost nothing? I hope this helps you to convince your management to move to Linux on Z. Kind regards, Berry. Martin, Terry R. (CMS/CTR) (CTR) schreef: > Hi > > > > Are you seeing a fair number of shops running Oracle on Linux on Z and > if so have the results been favorable? The question comes about > because.... > > > > My management is hearing that when people move servers over to the Z > under Linux they are mostly moving servers that have very little usage > already and that databases like Oracle are staying put on the other > platforms such as Solaris in my case, giving them the impression that > the z/Linux cannot handle this. I know there are some situations where > this may be true but I do not believe on a whole this is necessarily > true. What do you think! > > > > Thanks, > > > > Terry > > > > > ---------------------------------------------------------------------- > 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
