RAID0 and TRIM

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grimlockPH

grimlockPH

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Hi, so I have a Samsung SSD 840 EVO (128GB) and a WDC Blue hard drive (1TB). Can I make them run on RAID0? And is it possible to use TRIM on a RAID0 setup having an SSD and an HDD? Waiting for response. Thanks.
 
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You need identical drives to create a RAID 0. And unless you can create custom RAID drivers there is no way to use an SSD and a mechanical drive in RAID 0 even assuming there were the same size. And even if you could all it would do is cripple the SSD. I have no idea what i7Baby is talking about.

So, no. You can't do it.
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i7Baby

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Raid 0 - http://en.wikipedia.org/wiki/RAID -

"RAID 0 consists of striping, without mirroring or parity. The capacity of a RAID 0 volume is the sum of the capacities of the disks in the set, the same as with a spanned volume. There is no added redundancy for handling disk failures, just as with a spanned volume. Thus, failure of one disk causes the loss of the entire RAID 0 volume, with reduced possibilities of data recovery when compared to a broken spanned volume. Striping distributes the contents of files roughly equally among all disks in the set, which makes concurrent read or write operations on the multiple disks almost inevitable and results in performance improvements. The concurrent operations make the throughput of most read and write operations equal to the throughput of one disk multiplied by the number of disks. Increased throughput is the big benefit of RAID 0 versus spanned volume.[11]"

You can do it. But I wouldn't

Trim - http://en.wikipedia.org/wiki/Trim_%28computing%29 - only applies to SSDs.
 
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You need identical drives to create a RAID 0. And unless you can create custom RAID drivers there is no way to use an SSD and a mechanical drive in RAID 0 even assuming there were the same size. And even if you could all it would do is cripple the SSD. I have no idea what i7Baby is talking about.

So, no. You can't do it.
 
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McHenryB

McHenryB

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In short, you will limit the capacity of the 1TB drive to 128GB and reduce the speed of the SSD to that of the mechanical drive. You would get better results by removing the SSD and smashing it with a sledgehammer.

Not a wise idea.
 
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grimlockPH

grimlockPH

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Well, that's so sad. I should have read some articles about RAID setup first. Anyway, thank you for the info. Maybe I should just stick with my current setup.
 
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grimlockPH

grimlockPH

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Thanks for the advice. :) Think I'll buy another WDC 1TB or 128GB 840 EVO. I just want to try this RAID thing.
 
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McHenryB

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You really want to consider very carefully before using RAID 0; the disadvantages far outweigh the theoretical advantage for most people. I wouldn't even recommend RAID 1 or RAID 5 for a home user, although they are slightly more defensible.
 
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grimlockPH

grimlockPH

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I currently have my SSD as the boot drive, and the HDD as my storage. Should I just stick with that?
 
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Absolutely agree. If anything just get a larger SSD. Pretty much as you go up in size you also go up in speed with SSDs and trying to run RAID with SSDs only gains you performance in synthetic benchmarks not in real world speed. You also need an Intel 7x, 8x or 9x series chipset to have TRIM support with RAID when using an SSD setup.

SSD prices have consistently been the only computer components that continue to drop in price as well. I paid almost $250 for a 120GB OCZ Vertex 2 in 2010 and only $299 for my 500GB Samsung 840 Evo a year and a half ago. Now you can find 1TB drives cheaper than what I paid for my 500GB model on Black Friday 2013. Still a good idea to use mechanical drives for long term storage of stuff you don't use much though.
 
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