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I believe the integrated file system (IFS) might be a little slower, but it's pretty performant from my experience.

Our biggest issue was always the limitation of object ownership. A single user profile used to be limited to ~1million objects they could own (Not sure if this is still true.). This wreaked havoc for large document management shops. We had one customer who had to create a new object owner every month because of this limitation. Moved docs to SAN and problem went away (But that's another story...).

I have not used MySQL in production on IBMi, but I've played with it a bit.

You can use all the standard MySQL engine mechanisms to store your database in the IFS. Or if you want to be able to share data between RPG/CL/Cobol apps and PHP/Node/Etc you can turn on the storage engine that lets you store your data in DB2 but access it also as native MySQL tables.

The real question would be what is your use case and what apps do you want to run ?

Regards,
Richard Schoen
Director of Document Management
e. richard.schoen@xxxxxxxxxxxxxxx
p. 952.486.6802
w. helpsystems.com

------------------------------

message: 3
date: Sat, 13 Jan 2018 09:55:37 +0100
from: john erps <jacobus.erps@xxxxxxxxx>
subject: Re: Running .Net Natively on IBMi

I have a question regarding IBM i / PASE and streamfiles.

In my understanding using streamfiles on IBM i / PASE is a great deal less performant than using streamfiles on other platforms such as Unix.
Because a streamfile on Unix is really a streamfile on disk, and the disk really stores a HFS.
Instead, the native storage mechanism used on IBM i is completely different (MI objects, SLS) and the HFS is just a logical presentation.
Therefore e.g. MySQL cannot be used on IBM i for production use because it's database is implemented using streamfiles.
Instead, the DB2 storage engine must be used for it to have acceptable performance.

Is this understanding correct?




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