Saturday, July 2, 2011

Which is best to pursue Solaris, AIX or HP UNIX?

It depends on where you plan to spend your career. If you plan to work in the small to mid-tier type organizations, then the suggestion to develop expertise in RedHat is good advice. If you plan to go after larger organizations, then learning UNIX on the larger systems would be beneficial. I started out in NCR, moved to Solaris, and ended up in AIX, by what seemed to be a natural flow of market needs. Until Oracle decides it is going to go after the market that Sun once dominated, I wouldn't waste my time there. Don't get me wrong, of all the UNIXes, I love Solaris the best, but we are talking market forces here. HP just doesn't seem to have the presence it once had, but it seems to be hanging in there. AIX seems to be where the growth in UNIX lies. Solid AIX administration skills seem to be the most sought after, and its not really the expertise in the operating system, although I don't discount it, but the hardware. Knowing how to do the most with the least amount of hardware possible is a pSeries skill that is very sparse. People love throwing large amounts of hardware at large projects, and usually overbuy on one side (CPU), and shorten on another(Memory). Learning how to eek every last bit of worth out of a pSeries system is an art, and those who can master that can almost write their own ticket. 

When you talk storage, you have many players, in different segments of the storage market. Large storage is dominated by EMC, although Hitachi, IBM, and NEC all play in this space as well. Mid size storage has the same players, with NetApp playing in the NAS space of that market. 

All in all, nothing is going to replace solid experience. I haven't had a certification since Solaris 9. The last 2 organizations that looked at my resume` were only interested in verifying that I could do exactly what I said I could do. I never let them down. 

Meh, this is too much overload for a simple query. Don't paralyze yourself with the paper learning and certifications. They may be good to get your foot in the door, but eventually the time will come for you to put up or shut-up.

I agree that depends on many things. Redhat Linux will be find in small 
and mid-level enterprises true . But will be also found anywhere else. 
On large enterprises there is always a small tasks where they don't want to 
spend a hundred $$. 

So No. 1 .. You DO need some Linux background. 

AIX is showing more grow and market and a system administrator on Unix 
(AIX/HPUx) have a better salary than a Linux/Solaris. 

I work in a company where we hundreds of costumers using all flavors ... and 
can tell that at least 80% have AIX as main OS ... all of them have some 
Linux for task as (DNS, DHCP, Fileservers, SFTP) ... a few clients have pure 
linux... and the rest of the 20% is mostly HPUX for SAP and oracle... or 
solaris for oracle or avaya. 

Big middleware can give you a clue. 
websphere goes on AIX mostly 
db2 AIX.. 
oracle ... AIX... 
Avaya .. Sun 
SAP ... AIX or HPux 

This are just some example I know of. And you cannot consider middleware 
such apache... or mysql because even when they are widely used... they are 
mostly in small/mid level companies.