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Just adding to rindi's post...<br />
1. Yes, because you are striping the data across 2 drives as well as mirroring the data on each. (Striping increases read performance)<br />
3. No, it will not affect your current set-up.<br />
But you would be better-off running the lot off the controller card rather then the onboard controllers.<br />
This will put less load on the CPU and southbridge because the seperate controller card will be doing all the work.<br />
You would be better-off running the card in a PCI-X slot (if you have one), because of faster throughput that its smaller brother PCI.<br />
Hope this helps.
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Just adding to rindi's post...
1. Yes, because you are striping the data across 2 drives as well as mirroring the data on each. (Striping increases read performance)
3. No, it will not affect your current set-up.
But you would be better-off running the lot off the controller card rather then the onboard controllers.
This will put less load on the CPU and southbridge because the seperate controller card will be doing all the work.
You would be better-off running the card in a PCI-X slot (if you have one), because of faster throughput that its smaller brother PCI.
Hope this helps.

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I have Intel server board (SE7520AF2) from which I am running 2 SATA drives configured for <br />
Raid 1. &nbsp;I am considering adding 4 SATA drives configured for Raid 10. &nbsp;This will require the addition of an SATA<br />
Raid card. &nbsp;My questions are as follows:<br />
<br />
1) &nbsp;Will the Raid 10 configuration greatly enhance the I/O of the system?<br />
<br />
2) &nbsp;Which SATA Raid card manufacturer(s) provides solid reliability and performance?<br />
<br />
3) &nbsp;Will the addition of another Raid controller effect the Raid 1 setup off the motherboard?
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I have Intel server board (SE7520AF2) from which I am running 2 SATA drives configured for 
Raid 1.  I am considering adding 4 SATA drives configured for Raid 10.  This will require the addition of an SATA
Raid card.  My questions are as follows:

1)  Will the Raid 10 configuration greatly enhance the I/O of the system?

2)  Which SATA Raid card manufacturer(s) provides solid reliability and performance?

3)  Will the addition of another Raid controller effect the Raid 1 setup off the motherboard?

SATA Raid 10

Computer data storage, often called storage or memory, is a technology consisting of computer components and recording media used to retain digital data. In addition to local storage devices like CD and DVD readers, hard drives and flash drives, solid state drives can hold enormous amounts of data in a very small device. Cloud services and other new forms of remote storage also add to the capacity of devices and their ability to access more data without building additional data storage into a device.