Re: Oracle for NT disk installation

Eric Rey <Eric.Rey_at_com.mcnet.ch> wrote:

>Hello,
>I work now with Oracle Server for Windows NT version 7.3.2.1
>I have buy a new server :
>compaq Proliant 4500, 2 processor Pentium 166, 4 disk 4GB each.
>I want to migrate to this new server, but i have a question.
>Raid 1, 5 or none ?
>My instance as 10Gb.
>Thank you for your answer.
>Regards,
>Eric
>E-Mail : Eric.Rey_at_com.mcnet.ch

Your system is not a good candidate for RAID. Too few spindles holding too much data on probably a single controller.

Trade in your four 4GB drives for eight 2GB drives and another controller. Then you can;
RAID 0/1 the OS and Oracle executables/applications RAID 5 the data and index tablespaces on separate physical devices and controllers.
No RAID for mirrorred (duplexed) redo log files.

Just remember that when you select RAID 5 you are choosing to employ an I/O architecture in which fault resistance is favored over performance.

If you can't replace the drives then employ Oracle's recovery precautions to their fullest extent by activating on-line archiving of redo log files and mirroring redo log files, and performing on-line backups if cold ones are not feasible.

One good thing about not using RAID is that the DBA can manually tune the database base through an intelligent placement of files rather than surrendering that task to the blob of RAID storage.

Craig M. Wall Received on Tue Jun 04 1996 - 00:00:00 CEST