db, control files, redo logs and archived redo logs on the same disk!

[Former Member]

Hi all, I know that SAP and Oracle suggests to store the files of the database on different physical disks.

We are in the process of implementing our first SAP application (HR) and the server dedicated to this has 5 big disks (146 GB each) configured as follow:

2 disks for OS raid 1

2 disks for Oracle DB raid 1

1 disk Hot Spare.

This little project start for a small number of users, maybe 10.

What can I tell to the management in order to convince them that this is not a valid solution?

Or is it?

Please advise.

[andreas_herzog]

146 gb for os only? wow!

-> have a look in every installation guide where the bare minimum for a sap system regarding disks is illustrated...minimal configuration speaks of three disks for oracle/sap only (disk 1 with oracle home, sapreorg, origlogA and B and two sapdata; disk 2 with mirrlogA and B, saptrace, sapbackup, sapcheck, usr/sap and two sapdata; disk 3 with saparch)

if you're going productive with this sap system sap recommends that the logfiles are diustributed over several disks and that they are mirrored (raid 1)...sapdata has to be mirrored as well (raid 5 or raid 1)

so, you'd need at least 6 disks...1 for OS, usr/sap, oracle home etc. (1 for mirror) [20-30 GB partition should be sufficient], 1 for log (orig/mirror) (1 for mirror) and at least 1 for oracle db (1 for mirror) ...that would be the absolute bare minimum

GreetZ, AH

[Former Member]

Thank you very much for your reply.

kind regards.