SAP EP Sizing Queries

[Former Member]

All,

We have designed a clustered architecture of two SAP J2ee Engines ( one central instance

and a dialog instance ) with no fail over option . I used quick sizer tool for initial sizing .

My queries are

1) In the quick sizer , I got 2800 SAPS for Enterprise Portal . Does it mean that the J2ee Engine ( Central instance ) has to be powered

with 2800 SAPS ?

2) What about the other J2ee engine ( dialog instance ). Is it have to be the same 2800 or 2800/2 ?

3) In your experience , do you give equal power ( SAPS ) to both dialog and central instance ?

4) There are other components in the portal like ESS/MSS , LSO .So do we need to calculate the SAPS for each of these and add to

central instance and Dialog instance ?

5) The portal Database in a separate box , Quick sizer doesn't give any idea how to size this .Any clue about this ?

Aneez

[Former Member]

Hi,

If 2800 is the total SAPS required, then one would distribute the SAPS between database host, central instance and application host. there is no rule of thumb that CI should have more SAPS than DI, it depends on how you architect the design. ALso hardware vendors inputs would be helpful. Each server would be sized for optimum SAPS>. If you have not considered EsS/MSS or LSO during the initial sizing then ou need to reconsider it or look for additional hardware for the aextra SAPS.

Between the DB and CI, one could distribute the SAPS 40/60.

Also for each CPU, you should consider 2 - 4 GB of RAM, dependending on what hardware you choose.

Hope this helps,

Chetan