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Onboard Raid vs Dedicated Raid Controller

Last response: in Storage
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April 25, 2010 4:36:16 PM

I am getting a couple of the ssd's to run in raid 0 and was wondering if the performance of the controller and cache will be worth the loss of TRIM support since the controller won't pass those commands.

I have a 3ware 9650E 4 port with battery backup and 256MB of cache from a previous small server build and a ASUS P6T motherboard.

Thanks
a c 127 G Storage
April 25, 2010 4:38:18 PM

Onboard will be faster in IOps; many hardware RAID actually slow down SSDs due to their insane high IOps rate.

I recommend you use Intel onboard RAID if possible, and enable write caching. Do keep a backup elsewhere though of stuff you don't want to miss.
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a c 127 G Storage
April 25, 2010 4:40:22 PM

Since you don't have TRIM, i also highly recommend you do not use all space on the SSD. So if you get 2x 80GB = 160GB then you can create a C: drive on that volume of 120-140GB and leave the other space UNUSED and unpartitioned.

That would cope with having no TRIM support, and is necessary to keep SSDs from degrading rapidly in RAIDs without TRIM.
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April 25, 2010 5:00:30 PM

Thanks!
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!