RAID Disk Layout advice for Hybrid OLTP/Batch app

I was hoping for some advice from the community on my disk layout for a proposed upgrade to our Oracle setup (Windows 2003, JDE+Oracle9i, primarily OLTP/Batch extracts). Focusing purely from a hardware perspective, we're being given 14 disks to work with. I had initially thought that it was a lot, but when I start putting the spindles into RAID configurations, it doesn't give me a lot of room. 
 
2 Disks RAID 1 (mirrored) for OS, App and Oracle Binaries 
2 Disks RAID 1 (mirrored) for 1 set of online redo log files 
2 Disks RAID 1 (mirrored) for archive log files 
8 Disks RAID 10 (mirrored and Striped) for all data/index/undo/temp files. 
---------------------------------------------------------------------------------------------------------- 
14 total disks 
 
My question is -- where would I put the other set of multiplexed redo log files? Hardware mirroring gives me fault tolerance against media corruption, but doesn't protect me against accidental deletion of the logs. I don't want to put the 2nd set on the OS drive because it's mixing sequential (100% read / write) and random access (OS paging, binaries). 
 
I also wanted to better understand how the LGWR and ARC0 processes work. From the Oracle Perf Tuning Guide, the LWGR writes to one member at a time, so it pays to have alternating log groups on 4 disks. We believe the ARC0 process reads only the primary member of the disk, yet the figure 8-1 in the above document shows an arrow from ARC# to both redo members. So how does it really behave? Does it actually read from one or both members? If it only ever writes to the second set and never reads it, where would I put it? Could I even put the second set of online redo's into the data/index/undo/temp set of disks? 
 
I've already been perusing the various AskTom articles and read the Oracle whitepapers (#1and #2) on S.A.M.E. (stripe and mirror everything), and they all make some good suggestions -- it's just with this few disks, I find myself having to make compromises. Any help or suggestions on a better layout would be appreciated.

Hello Carl,
You have to implement this SAP Note - 1313075 to meet your purpose.
Create variant under this program - RFFOAVIS_FPAYM and assign the same in printjob tab in F110.Also you have to maintain the sender mail id details in FSAP T code and receiver mail id details in the concern vendor master data.
I hope it helps else revert us with your query.
Thanks & Regards,
Lakshmi S

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>
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user10459164 wrote:
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