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Confused about TRIM on Marvell 91XX

post #1 of 10
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So I am currently using on my 128gb C300 on the marvell 91xx sata 3 port with the latest Marvell drivers. I am finding conflicting information on whether TRIM is actually working despite the fact that both AIDA64 and windows DISABLEDELETNOTIFY command say it is.

Either way its not the end of the world, I'm only running the drive about 30% full which helps I suppose. Lets say in a year or so I notice a performance drop could I simply 1. make a system image with clonezilla 2. do a secure erase 3. restore system image to "reset" it back to stock performance?
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post #2 of 10
Windows will be sending the "trims" and believing they're making it all the way to the SSD, I'm just not sure they will be and there's no way to actually know. A secure erase and re-image will bring it back to life if you ever notice a slowdown.
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post #3 of 10
Thread Starter 
Quote:
Originally Posted by Darren9 View Post
Windows will be sending the "trims" and believing they're making it all the way to the SSD, I'm just not sure they will be and there's no way to actually know. A secure erase and re-image will bring it back to life if you ever notice a slowdown.
Yeah thats what I realized, AIDA is just telling me the disk supports trim and windows is just telling me it has trim enabled but neither means its actually doing it. I have read yes and no and only if it uses the windows driver and every combination.

I think I will leave it as is on the SATA 3 using the image and secure erasing is not a big deal and given my general usage and small use of space it probably will last a while before becoming noticeable if it is not using TRIM.
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post #4 of 10
I believe that for trim to be working your sata port has to be set to AHCI, not IDE and most SSD install guides tell you to set your port to AHCI.
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post #5 of 10
Thread Starter 
Quote:
Originally Posted by idahosurge View Post
I believe that for trim to be working your sata port has to be set to AHCI, not IDE and most SSD install guides tell you to set your port to AHCI.
Yeah it is set on AHCI.
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post #6 of 10
The Marvell chipsets do not support TRIM.

As with ALL SSDs, the Crucial C300 drives have garbage collection and while not as efficient or quick as TRIM, will do 95% of the same job.
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post #7 of 10
Thread Starter 
Quote:
Originally Posted by Old Hippie View Post
The Marvell chipsets do not support TRIM.

As with ALL SSDs, the Crucial C300 drives have garbage collection and while not as efficient or quick as TRIM, will do 95% of the same job.

Yeah thats what I figured. I just wanted to make sure that my system-image/secure erase would fix any degradation if it comes up.

Does GC still function in RAID0?

I had considered doing a raid0 ssd array for added performance but I had dismissed it because of a lack of TRIM support. If I'm not using TRIM now anyway it may be worth it. I have heard some complaint with using RAID on the marvell controller. I don't know just an idle thought.
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post #8 of 10
Quote:
Does GC still function in RAID0?
GC is operational in ALL SSDs.

If it wasn't SSDs would degrade to a crawl and be useless.

Anyone who says that GC isn't in an SSD has no knowledge of the technology.

I've used the Intel G1 and G2s in RAID and they were just fine but you have to remember that GC doesn't work as fast as TRIM and the more free space you have the better the performance will be if the drives are being heavily used.

I'm using a Crucial 256GB C300 on an LSI 9240-4i card and it doesn't support TRIM.

My plan is to buy another 256GB C300 and run a RAID0 setup and it won't support TRIM either but GC will do the job.
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post #9 of 10
Thread Starter 
Yeah I've got plenty of free space I'm using like 27gb of 128 I had way overestimated how much I'd need with all my data/documents on a seperate HDD and pagefiling/hibernate off.
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post #10 of 10
Quote:
Originally Posted by cavallino View Post
Yeah I've got plenty of free space I'm using like 27gb of 128 I had way overestimated how much I'd need with all my data/documents on a seperate HDD and pagefiling/hibernate off.
You're doing very good.

Not having the use of TRIM will mean little or nothing in your case.

Using HDDSecure Erase will definately bring your drive back to 100% if needed.
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