Is there any hardware restrictions on using Raid0? Or is it just a software thing?

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ThisWebsiteIsCoolIGuess

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Nov 30, 2016
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I am planning on using 2 512GB SSDs with RAID0, and was wondering if there's any sort of limitation or restrictions I should be aware about. Also, side question, Is it dumb for me to use a separate 250GB SSD for the boot drive, and the 1TB RAIDed SSDs for everything else? Cost isn't an issue here, not looking for bang for buck, just looking to see if it will be beneficial in any sense, regardless of overkill or not.
 
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JaredDM
Putting two SSD's in a software RAID will have zero speed advantage over a single SSD. In fact in some cases it can even be slower. It may be advantageous to just do a span (JBOD).

However since say cost isn't an issue you might consider a hardware RAID controller. Unless your motherboard was specifically designed to do a RAID of SSD's such as the ones with dual M.2 ports, a hardware RAID card may actually be better. With a controller card it may be able to take advantage of dual SSDs in a RAID. But, just your motherboard as the controller probably won't benefit from it.

As to using a separate SSD for OS vs storage, I suppose it depends on what you plan to do with the storage. If you're planning on doing video editing or...
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JaredDM

JaredDM

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Jul 8, 2015
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Putting two SSD's in a software RAID will have zero speed advantage over a single SSD. In fact in some cases it can even be slower. It may be advantageous to just do a span (JBOD).

However since say cost isn't an issue you might consider a hardware RAID controller. Unless your motherboard was specifically designed to do a RAID of SSD's such as the ones with dual M.2 ports, a hardware RAID card may actually be better. With a controller card it may be able to take advantage of dual SSDs in a RAID. But, just your motherboard as the controller probably won't benefit from it.

As to using a separate SSD for OS vs storage, I suppose it depends on what you plan to do with the storage. If you're planning on doing video editing or other IO intensive work from the RAID then it may have a marginal benefit to have the OS on a different SSD. If it's just for gaming or something like that, I probably wouldn't even bother with using SSDs for the RAID.
 
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csullx

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Dec 27, 2016
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This just isn't true. People have been software RAIDing their SSD's for a long time as scratch space. The principle of file striping applies regardless of the media, and a file striped across two SSD's will be faster to access than a file on a single SSD. Almost all high performance computing centers utilize the Lustre file system with SSD's which is essentially the same principle as RAID, but distributed across many systems.
 
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