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SSD vs SSD RAID

post #1 of 20
Thread Starter 
I am wanting to get an SSD/SSDs and I was wondering would it be better to get 1 x 120GB SSD that does 550 MB/s / 510 MB/s or get 2 x 64 GB SSDs that does 500 MB/s / 95 MB/s and RAID them.

1x Corsair 120GB SSD: http://www.newegg.com/Product/Product.aspx?Item=N82E16820233206

Total Storage: 120GB

Cost: 169.99 + Shipping: $5.99 = $175.98

2x Crucial 64GB SSDs: http://www.newegg.com/Product/Product.aspx?Item=N82E16820148441

Total Storage: 128GB

Cost: $209.98 + Shipping: $0.00 = $209.98

Would it be wise to get the 2x 64GB SSDs cause of the RAID even though the cost is a bit more.. There is no real difference in capacity, so it comes down to the main fact... is RAID worth it..

Thanks OCN,
Ryujin
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Ryujin
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post #2 of 20
I would recommend going with the Corsair Performance Pro if your going to go for ~128GB SSD. The Corsair you listed uses SandForce which isn't as reliable as the Marvell controller. If you go RAID on a SSD, I think you lose TRIM support.

I would recommend going with this over a RAID 0 array.
http://www.newegg.com/Product/Product.aspx?Item=N82E16820233226
post #3 of 20
Thread Starter 
I don't really have a whole lot to spend out of this 2 weeks pay check.. so I was thinking about something like this:

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=1083887&CatId=5300

If I can't find a 120GB+ SSD for cheap under $150 then I will just go with some WD Caviar Black in RAID, or something in the 7200RPM area.

Also if I get an SSD will I ever have to defrag? cause I hate defraging, I wish fragmentation was never invented lol ^__^

*EDIT* This Patriot SSD is 154.99 + $2.29 Shipping, with a $40.00 Mail In Rebate.. I am not much of a Mail In Rebate person, so I don't know if I should trust it or not.
Edited by I Whip My Hair - 2/23/12 at 7:55pm
Ryujin
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Ryujin
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post #4 of 20
Go with the one single drive. It will still be a big enough upgrade from a single spindle drive. Raid is twice as fast in benchmarks, but I don't think you will notice a difference on an every day basis, and its definately not worth it if you are on a budget.
post #5 of 20
Thread Starter 
Read post #3 please

Thanks,
Ryujin
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Ryujin
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post #6 of 20
Quote:
Originally Posted by I Whip My Hair View Post

I don't really have a whole lot to spend out of this 2 weeks pay check.. so I was thinking about something like this:

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=1083887&CatId=5300

If I can't find a 120GB+ SSD for cheap under $150 then I will just go with some WD Caviar Black in RAID, or something in the 7200RPM area.

Also if I get an SSD will I ever have to defrag? cause I hate defraging, I wish fragmentation was never invented lol ^__^

*EDIT* This Patriot SSD is 154.99 with a $40.00 Mail In Rebate.. I am not much of a Mail In Rebate person, so I don't know if I should trust it or not.

The difference b/w HDDs in RAID 0 and a single SSD is crazy. RAID 0 with SSDs isn't really needed, there isn't much of a difference in real world use as it is with HDDs. Get what ever you can afford, a SSD is worth it.

Plus why does it need to be 128GB and you can't live with 64GB? redface.gif


The M4 is 167 here if you can spend an extra 15 or so...http://www.bhphotovideo.com/c/product/768801-REG/Crucial_Technology_CT128M4SSD2_128GB_m4_SSD_2_5_.html

or you can get a Octane or Petrol, but I'd rather the better M4: http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&N=100011693%20600038478&IsNodeId=1&name=128GB&Order=PRICE
Quote:
Originally Posted by I Whip My Hair View Post

Also if I get an SSD will I ever have to defrag? cause I hate defraging, I wish fragmentation was never invented lol ^__^

Why you shouldn't defrag a SSD:
Basically a SSD never needs defragmenting because it doesn't matter where the data is on the drive, they have ~.1 access time to anywhere on the the SSD's NAND cells and is always the same. All defragging does to an ssd is reduce its life by moving the data around on the drive.

There is a difference in defragging a SSD vs a HDD.

With HDDs the OS knows where the data on the HDD. Defrag programs assume that LBA (Logical Block Addresses) are fixed to a specific physical point on the hard disk. for example, LBA=1 is next to LBA=2, which is in turn next to LBA=3, thus when you defrag, it moves adjusts the files locations on the disk's platters where they can be read sequentially to increase the speeds. This is not the case for SSDs as LBAs for flash pages change based on its wear leveling algorithm.

For SSDs since they have flash memory and have a controller that takes care of wear leveling, when you defrag, it is a waste of writes to the drive on the drive, the OS thinks it knows where it is, but it really does not. It simply tells the SSD to read and write the data over in a certain location, but the controller of the SSD actually tells the data where to go. So, the OS does not know how data is being mapped on the SSD, the controller maintains the OS's understanding of the LBA but keeps it own internal LBA map.

Fragmentation is not going to hurt a SSD's speed. As a matter of fact SSDs fragment data on purpose to increase performance through parallel access, fragmentation is a requirement for maximum SSD performance. SSD controllers use multiple channels (typically 8-10) to improve performance (like RAID 0). Fragmenting data helps to ensure best performance. Even if a file is stored in sequential blocks according to its LBA address (ie. the file is not fragmented according to the OS/defrag program), it might be sprawled across several flash chips.
post #7 of 20
Seany..isn't ssd RAID fast?(er)
 
Thuban Powah!
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Thuban Powah!
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post #8 of 20
If you do plan on a single 64GB, the Crucial M4 has half the bandwidth in that capacity compared to the higher capacity ones smile.gif
post #9 of 20
Thread Starter 
Quote:
Originally Posted by I Whip My Hair View Post

I don't really have a whole lot to spend out of this 2 weeks pay check.. so I was thinking about something like this:
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=1083887&CatId=5300
If I can't find a 120GB+ SSD for cheap under $150 then I will just go with some WD Caviar Black in RAID, or something in the 7200RPM area.
Also if I get an SSD will I ever have to defrag? cause I hate defraging, I wish fragmentation was never invented lol ^__^
*EDIT* This Patriot SSD is 154.99 + $2.29 Shipping, with a $40.00 Mail In Rebate.. I am not much of a Mail In Rebate person, so I don't know if I should trust it or not.

Please read this post!!!

Thanks,
Ryujin
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Ryujin
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post #10 of 20
Quote:
Originally Posted by Schmuckley View Post

Seany..isn't ssd RAID fast?(er)

Yes, but only marginally in real world use, you rarely will notice a difference except in large data transfers, plus a single M4 is already 2x faster than one of those force 3 or pyro SSDs the OP linked anyways.
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