What problems I might face: Mac Pro and RAID on Lion

I have the following setup:
1 SSD - for OS X (currently OS X Snow Leopard 10.6.8)
3 HDD (RAID 0) - two partitions (Documents and Media)
1 HDD - with 2 partitions 1st SSD backup, 2nd Documents partition backup
(all media files from Media partition are backed up to an external 4 HDDs Raid 5 on Rocstor’s ArcticRoc 4T)
My Documents and Mail folders are soft-linked from SSD to Documents partition on Raid0
Reading different sourced on the web I found that Lion is doing not very good with RAID, at least created on Snow Leopard even if RAID is not used to boot the OS X Lion from).
What problems I might face if I:
upgrade from Snow Leopard to Lion
do clean install of Mac Os X Lion
Has anyone tried the OS X Lion in similar setup?
Any ideas and observations from practical experience are highly appreciated.
Thank you

I have an installer since I have my Macbook pro 17” mid 2010 upgraded to Lion few days ago.
My media files take over 2TB now and therefore I use 3x3TB RAID0 - 6TB for media and 3TB for Documents (Documents, Mail, Music, Downloads)
My mail is taking 2.25GB of disk space, it is not that much and might be moved to SSD especially if it benefits from it even if I do not really care will I get my email message displayed in 0.2 or 0.02 of second.
The most important think I would not like to lose are my media files and I would not like to find me in a situation when after I install Lion I have no access to my media nor on my local RAID or an External one (backup). The performance is very important as well and even if RAID works I would not like to find out that the same RAID HDDs on Lion are performing slower….
I think I will wait few updates of Lion prior to upgrading my MP to it.
P.S. MPG I guess is mac performance guide, and if yes - I know it. But what AYM is? Google returns me different results for AYM… starting from “Awards for Young Musicians” to “Aerobics, Yoga & More”

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What problems I might face: Mac Pro and RAID on Lion

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