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RAID 0 with LSI 9271-8i and 4X Samsung PRO 256GB - Good performances?

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For my company needs, we need a RAID 0 which can support high bandwith transfer for 4K video.

I bought the following items to test if it was possible to do it without big costs:

- Supermicro X9SRH-7TF

- Intel E5-2620v2

- 16 GB RAM 1600MHZ

- Western Digital Caviar Black 500GO 3.5" with Windows 8.1 x64 up-to-date as operating system

- RAID Controller LSI 9271-8i

- 4X Samsung 840 PRO 256GB

Everything has been updated:

- Motherboard

- Windows 8.1 x64

- RAID Controller LSI 9271-8i (drivers + firmware)

- SSDs (firmware trough Samsung SSD Magician)

My problem is that I'm not a RAID expert at all and I don't know which parameters are the best...

I read that Samsung 840 PRO were not the best SSDs for RAID on LSI controllers due to problems with these SSDs but it was corrected with lasts firmwares right?

Currently, I use the following configuration:

RAID 0 Virtual Volume including my 4 SSDs with the following settings:

64 KB Stripe (also for NTFS properties when formatting my partition)

No Initalization (what is it by the way?)

Write Through

Direct I/O

No Read Ahead

Disk Cache is unavailable when configuring Virtual volume

I have the following results in Crystal Mark: 1630 MB/s READ / 1500 MB/S WRITE

And these results with our homemade application to test video bandwith on a disk: 1350 MB/S READ / 1180 MB/S WRITE

Unfortunately 1180 MB/s is a little bit short and I wonder if there is a way to have better performances...

- Are there better settings for RAID 0 with SSDs ?

- Will it be better with 5 or 6 SSDs or is it useless ?

Don't hesitate to ask me questions or further explanation if you need this to help me. As said before, I'm not an expert at all with RAID controllers especially with SSDs..



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