Mixed O/S 3 Tier Architecture for DataStage

Sreedhar · Post by **Sreedhar** » Fri Jun 04, 2010 3:45 pm

Hi,

Currently we are running DataStage on a 2 tier Arch.

We now want to move onto 3 tier Architecture.

Can I install DataStage engine on AIX and Services on Window Operating System box?

chulett · Post by **chulett** » Fri Jun 04, 2010 3:53 pm

Probably, but don't know for certain... others will.

ps. It is "tier" not "tire" by the way.

ray.wurlod · Post by **ray.wurlod** » Fri Jun 04, 2010 4:22 pm

Theoretically it's possible but IBM usually advise against mixing platform types.

Sreedhar · Post by **Sreedhar** » Fri Jun 04, 2010 4:33 pm

Do we have any documentation on how to go about that. Installing Services on Windows and Engine on AIX?

I have been looking in IBM's Website didn't find any.

ps: Sorry about that. Yes it is Tier

[*Note - DataStage is also one word. Corrected both - Andy*]

ray.wurlod · Post by **ray.wurlod** » Fri Jun 04, 2010 4:45 pm

IBM usually advise against mixing platform types.

Therefore they're unlikely to document how to do it. Indeed, the most recent Installation and Upgrade Guide specifically prohibits mixing platform types between repository, services and engine tiers.

IBM Analytics Champion 2009 - 2020 · Post by **asorrell** » Sun Jun 06, 2010 8:06 pm

I'm also going to climb on the "don't go there" bandwagon. I know a customer once wanted me to do that a few years ago and we talked to IBM Customer Service about it. Their answer was "Not recommended". "REALLY not recommended".

Makes everything more difficult to support, debug and diagnose.

Sreedhar · Post by **Sreedhar** » Tue Jun 08, 2010 3:44 pm

Does IBM support Sub capacity on the same Server.

I don't know if that makes sense to you. Let me elaborate.

As of now we have Engine Tier and Services Tier installed on the same Machine (AIX)

Now we have upgraded our Engine tier (got License for 4 core from 2 core), to 4 core, Service tier still is at 2 core. Now instead of separating these two boxes. I want to create a virtual machine and extend the Engine tier to make use of 4 cores, Service Tier to make use of only 2 Core.

Did any one of implement this, if yes how did you go about it?

ray.wurlod · Post by **ray.wurlod** » Tue Jun 08, 2010 4:53 pm

Why not just split into two LPARs using virtualized I/O - you can control how many cores are allocated to each LPAR.

Sreedhar · Post by **Sreedhar** » Tue Jun 08, 2010 5:45 pm

What I understand is that IBM does not support or the License does not allow us to do that way. So before I ask IBM I want to know if that is true. Hope that is called as sub capacity(Correct me if I am wrong).

ray.wurlod · Post by **ray.wurlod** » Tue Jun 08, 2010 8:42 pm

That's precisely what my current site is using - one LPAR for repository and services tiers, three LPARs each running an engine tier and yet another repository running InfoSphere Warehouse (DB2 version 9.7 Warehouse Edition). The license DOES allow for it.

IBM Analytics Champion 2009 - 2020 · Post by **asorrell** » Tue Jun 08, 2010 9:28 pm

Yup - I'm about to setup a new site using LPAR's as well... As far as I know there's no problem using LPAR's.

Sreedhar · Post by **Sreedhar** » Mon Jun 21, 2010 3:34 pm

If I am going with the New LPAR, what are the min requirements like

Hard disk Space
RAM
and Processor
required for this purpose.

ray.wurlod · Post by **ray.wurlod** » Mon Jun 21, 2010 5:11 pm

As documented. All this information is on IBM website, and may change over time so it's better to direct you there rather than lock anything in here. Also, the total disk space is a function of the volume of data you will be processing, about which we have no information.