[vasco]

Originally Posted by kbr

well it's a question of taste maybe, but I think Aix need a big in deep remodling...

I agree but AIX 6 is not it.
AIX 3.1.5 was _much_ better than SVR3 and SVR4, now it's more a question of taste (between AIX and Linux).

Linux is catching up with windows on the desktop, but at the same time is getting a windows flavor that I don't like much. Mac OS X is more or less the same.

Someone will have to take UNIX to the NeXT Level (:-)

[kbr]

and for Solaris the good point is that they give code to opensource community... for the rest i didn't worked enough with the system to have an opinion

[cdelgadop]

Hi

I have worked with both Linux flavors on pSeries and i think Suse is better than RedHat. While RedHat does not have support for JFS File Systems Suse does. Suse has a very nice support for Virtualization and Logical Partitioning.

About next step for UNIX, we have been seeing this next step for at least 4 years since the introduction of Logical Partitions in AIX arena. Then other UNIX took the same way. Now there's a battle between Solaris Zones and AIX Workload Partitions and HPUX nPars and vPars.

Thanks.

[vasco]

Originally Posted by cdelgadop

I have worked with both Linux flavors on pSeries and i think Suse is better than RedHat. While RedHat does not have support for JFS File Systems Suse does. Suse has a very nice support for Virtualization and Logical Partitioning.

I didn't knew that. I assumed that or they didn't support jfs at all or that both whould do. It's only jfs or jfs2 ??? What about concurrent VGs between AIX and Linux ? It's possible ?
Is there any problem in using ext3, reiser or xfs with SAN storage ? What about multipath (MPIO and others). - sorry, I'm dumping all the questions I had about linux on power.

Originally Posted by cdelgadop

About next step for UNIX, we have been seeing this next step for at least 4 years since the introduction of Logical Partitions in AIX arena. Then other UNIX took the same way. Now there's a battle between Solaris Zones and AIX Workload Partitions and HPUX nPars and vPars.
Thanks.

Yes, partitions are the hot subject now. But that's not what I mean about the NeXT Step ;-)
I mean from the UNIX point of view. SVR2/3 -> AIX was (for me) the next step at the time... Now what ?

[cdelgadop]

Hi

Yes. Redhat doesn't have support for IBM JFS and rather use ext3 as default FS. This is not bad at all. IBM JFS is ok but there's another options. SUSE does have support for JFS and since i have been working with JFS on AIX for many years is easier for me to work with such FS Type.

I'm not quite sure about concurrency between AIX and Linux. This would be a nice question in the IBM's HACMP forum. There's and option named SAN FS from IBM that claims to be solution for those heterogenous systems.

There's no problem at all with ext3, reiserFS (quite good) or XFS, i have configure them on IBM SVC and EMC2 Powerpath devices with no problem at all (just for LUNs on data Volume Groups, not for SAN boot devices) and, AFAIK, they're still working. They do have MPIO support.

Last time i worked on such configuration was with two JS21 blades with virtualization of some 800GB of DS4800 LUNs for two LPAR (for each JS21) for SAP DEV and QA enviroments. At Linux (SUSE) level i saw storage as normal SCSI disk and configured all FS as JFS ones.

Which one is the best ?. I don't know. People says reiserFS is nice for small files. Some pleople says XFS is good for RDBMS. I've never heard about ext3 and i've used just for internal disk as Linux install disks.

Next Step ???, ZFS. I think this is the Solaris killer app in the war of UNIX. I've worked some Solaris 8/9 and, unless yoor customer pay for a very expensive Veritas license, managing FS is a nigthmare. Now with this ZFS concept they're finnaly years ahead of AIX.