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One 256GB or two 128 in RAID 0?

Last response: in Storage
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November 18, 2010 10:31:15 AM

Hi all

I'm about to buy one or two new SSD, what should I go for, one 256GB or two 128 in RAID 0?

Thanks
Stefan

More about : 256gb 128 raid

a b G Storage
November 18, 2010 4:06:08 PM

Hi arwdab_ and welcome to Tom's forum.

What mobo do you have? What applications do u want install? What SSD do you have in mind?
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November 18, 2010 5:24:41 PM

Hi,

I have an ASUS P7P55D-E mobo with Win 7 x64. Using the computer both at work (sw develpoment using a lot of vpc's and database stuff) and private (gaming).

Was thinking of two ADATA 599-SERIES 2.5" 128GB SSD SATA/300 MLC or one 256GB. The price for both options are about the same.

/Stefan
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November 19, 2010 1:30:10 PM

Thanks for the replies but not really the answers I was looking for...
I'm more interested in pros and cons with the different setups, the actual drive(s) to use is secondary since when the time actually comes to buy there are probably other offers on the market than today.

* Is the setup process with raid worth it?
* Will I be able to add more storage by adding hdds on the same mobo if I use raid.
* Can I expect more failures?
* I read something about performance degradation over time when using SSDs - differences between single SSD and raid setup?

/Stefan

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a b G Storage
November 19, 2010 2:39:56 PM

1- Yeah, and RAID 0 is very used for get performance.
2- Yeah, but you will need configure the other storage drives as single drives and not RAID mode.
3- RAID 0 is used for performance, but is very insecure because if one drive fail all the data will be lost. The failures is something relative, can fail in two months or can't fail ever.
4- Yeah, the performance degradation happen when u don't use TRIM.
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November 19, 2010 3:31:46 PM

I just wanted to vouch for the reliability of a RAID 0 setup. Theoretically, yes, the reliability of the array as a whole is 50% of the reliability of the individual drives, but looking that mechanical drives themselves have MTBFs of thousands and thousands of hours, there really is no reason why any of the drives should fail you.
Also, for my usage, I wouldn't really care too much if it did fail on me. I would just have to reinstall the apps and stuff. Documents are always on my dropbox.

Btw, I may be wrong about this but I've heard that SSDs in RAID 0 don't support TRIM. is that true?
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a b G Storage
November 19, 2010 3:48:20 PM

TRIM is only supported by single SSD or IIRC OCZ vertex in Raid 0. Even that I still prefer single SSD (currently I have a single one) that two RAID 0 without TRIM.
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a b G Storage
November 20, 2010 2:54:09 AM

The ssd jump is so huge that RAIDing them seems unnecessary. Add to that the issues with TRIM and/or leaving some unpartitioned free space and I would simply buy one large drive. But that's me.
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November 20, 2010 3:39:22 AM

Best answer selected by arwdab_.
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a b G Storage
November 21, 2010 4:07:51 AM

Thanks Stefan, good computing. Now the question of whether to wait for 25nm drives coming in the new year or buy a nice sandforce 256gb now... hmmm
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a b G Storage
November 21, 2010 5:57:18 AM

This topic has been closed by Saint19
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