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Can I do RAID5 and JBOD together?

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July 17, 2009 9:38:51 PM

:hello: 
I have a N7700 Thecus NAS on hand and I am wondering if it is possible to set up different RAID arrays, for example, 3 HDD in RAID 5 and 4 HDD in JBOD? So I can put my important data in RAID and other files in JBOD and get faster file transfer speed.

Any help appreciated. :bounce: 

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a b G Storage
July 17, 2009 10:06:54 PM

To my knowledge, any decent RAID controller should allow you to have multiple arrays. In your case I googled a bit and it seems the N7700 does. BTW, I doubt JBOD gives any kind of performance improvements, you would have to use RAID 0.
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a b G Storage
July 18, 2009 3:35:19 AM

JBOD is just that: Just a Bunch of Disks. It's only useful so that the OS sees them as one drive. There is no striping or parity, so there is no transfer speed gains and no redundancy.
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a b G Storage
July 18, 2009 11:17:27 AM

On the other hand, if one drive fails, you only lose what is on that drive. Then again if data security is your concern, JBOD and RAID 0 aren't the way to go.
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