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SSD: TRIM vs. RAID 0

post #1 of 20
Thread Starter 
I currently have a 120GB OCZ SSD as my primary drive.

I require more space (program installs/games etc). My options are to sell this drive and buy a 240 GB, or to buy a second 120GB and RAID 0 them.


The RAID 0 option is of course cheaper but what is the net result of losing TRIM support?
Edited by Robilar - 3/18/11 at 6:12am
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post #2 of 20
I'm definitely no expert, but here's what I know:

The speed gain from going RAID 0 with two drives usually trumps the speeds from one drive of a higher model, unless of course you're going to be going from a lower controller to a higher one (say, from JMicron to Sandforce or Marvell).

As of now, there's no way to use TRIM on raided drives, but some people have gotten around that by doing the following:
  • backing up their data
  • de-raiding the drives
  • performing secure erases on each drive (I've been doing so on mine in Linux, so I can see where they go with that)
  • re-build the raid array
  • restore their data

I hope that helped.
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post #3 of 20
Thread Starter 
Just looked at this from a cost perspective.

Add a second 120GB, roughly $180

Sell my existing drive (likely get about $150)
Buy a new 240GB (about $420)

After taxes, it will cost me about $120 more to get a new, bigger drive.
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post #4 of 20
I would go for raid personally i think its a better option all round smile.gif.
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post #5 of 20
run them as normal single 120x 2 drives?

not in RAID. u keep TRIM, and get the 240gb space biggrin.gif.

less stress on the ssd's (not like they get stressed with their awesome red speeds.)
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post #6 of 20
OCZ garbage collection.

If you notice speed degredation, log off and let your rig idle...I think it takes an hour or so (possibly 24)


http://www.guru3d.com/news/ocz-vertex-and-agility-garbage-collection-works-really-well/
post #7 of 20
Losing trim in my opinion is a bad idea, in the long run. Trim keeps your SSD in like new condition with the garbage collection and what not and of course over time your raid will slow down. There are of course ways around it, but really IMO that's a hassle that makes raiding SSD's an option that isn't viable.

SSD'S are plenty fast and in new model SSD'S they are just as fast a mechanical HDD'S that are in raid if not faster. JUst my two cents, but that is something I wouldn't do.
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post #8 of 20
Can you benifit from raid 0?
Wouldnt you been hitting the limits of sata2?

3Gbs=3000Mbs=375MBs <---Max read for sata2

Your Drives in raid 0 have a read speed of 2*275MBs= 550MBs <---you cannot achive the max gain from raid 0 with sata2

Your motherboard running sata3 6Gbs?

Feel free to correct me if im wrong, i was assuming your drives used a sandforce controller.
 
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post #9 of 20
I agree with running 2 non raid SSD for more space.

If, when TRIM is available to RAID, you bet I'll be there.
post #10 of 20
I second the idea of 2 non-raid 120GB SSD's.
    
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