SSD Raid HDD raid vs no raid

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superman101

Commendable
May 16, 2016
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Hello,

I'm getting a custom PC built with a 6 core i7 processor. 16GB of ram that I will eventually upgrade to 64GB when I have money. I will be getting a 2GB Quadra Pro Graphics card.

I edit using Premiere Pro and use After Effects lots.

I know SSD's aren't cheap for massive amounts of storage. I did find a 2TB SSD made by samsung. it's a 2.5 inch drive.

Here are my questions.

1. Would using the samsung 2TB SSD to store my media files be as fast as if I had made a raid 5 with 7200RPM Disks?

2. Would there be any benefit if I made a Raid 5 out of smaller capacity SSD's to form up to 2TB?

Just trying to figure out what would be better with my system I'm getting. It's already going to be pretty fast as my internal drive will be an SSD.

My footage is in AVCHD which are pretty compressed files already.
 
Solution
geofelt
1. Yes.
2. No.
Raid-0 has been over hyped as a performance enhancer. Raid-5 is a similar striped implementation.
Sequential benchmarks do look wonderful, but the real world does not seem to deliver the indicated performance benefits for most
desktop users. The reason is, that sequential benchmarks are coded for maximum overlapped I/O rates.
It depends on reading a stripe of data simultaneously from each raid-0 member, and that is rarely what we do.
The OS does mostly small random reads and writes, so raid-0 is of little use there.
There are some apps that will benefit. They are characterized by reading large files in a sequential overlapped manner.

Here is a study using ssd devices in raid-0...
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geofelt

geofelt

Titan
Oct 9, 2006
54,290
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1. Yes.
2. No.
Raid-0 has been over hyped as a performance enhancer. Raid-5 is a similar striped implementation.
Sequential benchmarks do look wonderful, but the real world does not seem to deliver the indicated performance benefits for most
desktop users. The reason is, that sequential benchmarks are coded for maximum overlapped I/O rates.
It depends on reading a stripe of data simultaneously from each raid-0 member, and that is rarely what we do.
The OS does mostly small random reads and writes, so raid-0 is of little use there.
There are some apps that will benefit. They are characterized by reading large files in a sequential overlapped manner.

Here is a study using ssd devices in raid-0.
http://www.tomshardware.com/reviews/ssd-raid-benchmark,3485.html
Spoiler... no benefit at all.

If money is not a big issue, use a NVMe ssd using a pcie X4 interface.
Here are two:
Samsung 960 PRO m.2 2tb
http://www.newegg.com/Product/Product.aspx?Item=9SIA12K54D0532
Intel 750 1.2tb
http://www.newegg.com/Product/Product.aspx?Item=N82E16820167363



 
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Solution
USAFRet

USAFRet

Titan
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Mar 16, 2013
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SSD's 'wearing out' was a thing about 10 years ago.
Any recent consumer grade SSD will outlive the system you put it in. It will become obsolete simply due to size, long before it 'wears out'.

Yes, the SSD has a limited number of write cycles. But that is an absolutely huge number.
Huge, as in you'd have to write a couple hundred GB a day, every day, for several years.
Here is an endurance test from a couple of years ago:
http://us.hardware.info/reviews/4178/10/hardwareinfo-tests-lifespan-of-samsung-ssd-840-250gb-tlc-ssd-updated-with-final-conclusion-final-update-20-6-2013

"Even when you push an SSD to the max by downloading lots of movies everyday up to an average of 30 GiB per day, the SSD will still last you 24 years."
 
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S

superman101

Commendable
May 16, 2016
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thanks,

Money is an issue for me right now but I'm saving money for SSD's for use in the future so thanks for these links.
 
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USAFRet

USAFRet

Titan
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Mar 16, 2013
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Only partially.
An SSHD is a merger of a regular spinning HDD, and an 8GB SSD.
The drive firmware learns which individual data blocks (not applications) are most often used. Those end up in the fast SSD portion.
Basically, that SSD space is simply a large cache for the HDD.

For reading stuff that lives in that 8GB portion, it can be just as fast as a regular SSD.
For writing to that drive, or reading from some data that does not live in that SSD space, it is as slow as a regular HDD.
 
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