File system recommendation in SAP -AIX

Question

Dear All ,
Pls check my current file system of PROD .
Filesystem    GB blocks      Used      Free %Used Mounted on
/dev/prddata1lv    120.00     66.61     53.39   56% /oracle/IRP/sapdata1
/dev/prddata2lv    120.00     94.24     25.76   79% /oracle/IRP/sapdata2
/dev/prddata3lv    120.00     74.55     45.45   63% /oracle/IRP/sapdata3
/dev/prddata4lv    120.00     89.14     30.86   75% /oracle/IRP/sapdata4
1, How much Space is recommended to increase the total space of the sapdata1..4 file system in SAP.
Currently we have assigned 120GB to each datafile. if its any recommendation of sapdata1,2,3,4 total space , how can proceed for further ?
ie ---> is there any limitation to increase the sapdata file system in SAP .
example sapdata1,...4 ---> max limit to increase is 200 GB like that .....
2,secondly only sapdata4 is keep on growing and rest of the file system are not much .
Kindly suggets
Edited by: satheesh0812 on Dec 20, 2010 7:13 AM

Answer 1

Hi,
Please identify what are the activities that were taking place which was consuming your space so rapidly.
Analyze if the same activities are going to be performed in future, if so for how many months.
Based on the comparision of present growth trend you can predict future trend and decide. Also analyze which table/tablespace is growing fast and what were its related data files and where are they located, you need to increase that file system to high level rather increasing all file systems sapdata1...4.
Based on gathered inputs you can easily predict future growth trends and accordingly increase your size with additional space of 10%.
You can increase your file system there is no limitation such, but you will face performance related problems. For this you need to create a separate tablespace and move the heavily growing table data files into that table space with proper index build.
Regards.
Edited by: Sita Rr Uppalapati on Dec 20, 2010 3:20 PM