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Raid with 1 SSD and 1 7200rpm HD? Good idea or no?

post #1 of 11
Thread Starter 
Simple question. I'm an audio guy (only a copmuter guy by default, to the extent that it helps my music production).

So... basically, i hear a Raid 0's performance would be an improvement when reading data. This is very appealing to me b/c I have large sample libraries of sound that gets bottlenecked when instruments need to be loaded up. Any way I can cut down load times is super critical for me... faster loading makes a more happy music producer and engineer lol.

I have a Sandisk Ultra Plus 256GB SSD and a Western Digital Caviar Black 7200rpm 500GB HD that are holding all of my libraries for the most part.

Would it be beneficial for me to wipe these clean, create a RAID 0, and reinstall the sample libraries? Would I notice any improvements in load times?

I hear it's noticeable. But just want to confirm to make sure I'm not just listening to someone's placebo effect, if you know what I mean.



System specs:
i7 3930k OC to 4.8GHz
Asus Rampage IV Formula
32 GB Kingston HyperX Red RAM @ 1866Mhz
Samsung Pro 128GB SSD
Sandisk Ultra Plus 256GB SSD
3 x 7200rpm WD 500GB HD's
post #2 of 11
srry but you can not do a raid with an ssd and a hdd. the requiremnts are the drives have to be the same capacity and almost the same speed, and have to be all hdds or all ssds.
Hope this helps.

Edit: But you can create a raid 0 with those 3 x 7200rpm WD 500GB HD
wink.gif
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post #3 of 11
Thread Starter 
^this absolutely absolutely does... thank you!


if that's the case.. i will probably grab another Sandisk Ultra Plus.


If I were to do that... do you think i'd see significant improvement in how quickly my instruments load up?
post #4 of 11
Quote:
Originally Posted by CPhoenix View Post

^this absolutely absolutely does... thank you!


if that's the case.. i will probably grab another Sandisk Ultra Plus.


If I were to do that... do you think i'd see significant improvement in how quickly my instruments load up?

It depends on how big the instruments are. RAID0 SSDs really take off with larger files. But, if your instruments are smaller file sizes, RAID0 wouldn't be worth it, IMO...one SSD would do nicely. Don't forget too that RAID0 lacks redundancy; so if one drive blows a tire, you lose the data on both drives. If you do go that route, be sure to backup the array regularly. smile.gif
Edited by francisw19 - 5/21/13 at 7:18am
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post #5 of 11
Raid 0 increases in speed by 50-100% more, so a ssd that is 500mb/s will do 750- 1000 mb/s at raid 0
Pros of raid 0 is
more storage
faster speeds

Cons of raid 0
Unreliable if the drives are not exact
if one drive dies alll your memory (storage) is wiped.

But the cons of raid 0 can be solved by:
backing up your important files.

Just a note raid 0 on ssds are very overkill as no application will need that much, unless you are using it to play single player games, file transfer to another computer in the house or have very fast internet (over 1 Gb/s) then it isnt much of a actual real world preformance difference But still a very cool thing to have.
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post #6 of 11
Thread Starter 
Awesome... reliability is not too concerning to me... since the data I have is backed up and can easily be reinstalled. (I'll be doing an image copy so I don't have to run 30 installers just to get my libraries back lmao).

This is the news I was hoping for. Sounds like it will heavily benefit me. I have seriously have some huge instrument patches that can be up to 2GB for one single patch.... and granted it loads faster on the single SSD... it's still a whole 6-7 seconds before the thing is loaded up.

That might not sound like a lot of time.... but it certainly is when you're in the middle of a hot production you're working on, and you have to wait 6-7 seconds before you can play the instrument part you have in your head. You can easily forget what you were doing that fast! So.... any time I can cut down on that is well spent in my eyes.



Last question..... and this may be a silly question, but I seriously don't know the answer to it:

If I were to do a Raid 0 with 3 of the exact same SSD... would that be any difference in the Raid 0 with 2 SSD's?
post #7 of 11
Quote:
Originally Posted by CPhoenix View Post


Last question..... and this may be a silly question, but I seriously don't know the answer to it:

If I were to do a Raid 0 with 3 of the exact same SSD... would that be any difference in the Raid 0 with 2 SSD's?

yes 3 drives will be faster than 2 drives. so a 500mb/s ssd will now prefrom in raid 0 at 1000mb/s to 1500 mb/s.

but past 2 drives in raid 0 it can only prefrom as fast as the raid card/motherboard, also make sure that your motherboard support raid 0 with sata 3.0 (6gb/s) so you can take the full advantage of the drives. Also i would look in these as they preform very fast with their high 4k reads. correct me if im worng but i belive you need fast random writes for your needs.

Edit: I would consider the pci-e drive from above above, but the ssds are way cheaper in price and you already have one drive, so unless you swim in money get the ssds.

But if you do swim in money OCZ also makes enterprise editions of these drives that are faster than anything I've seen but with a very heavey Price


Correction: Just read something online.
Ok so your needs are actually 4k random reads and writes, but in raid the random reads/writes do not add up, so a 100,000 4k random read/write in raid 0 will not increase as the 4k random read/write is determend by one drive. So 4k random read/write do not increase. so buying that OCZ pci-e Drive is actually 2-3 times faster at random read/write than a raid 0 sandisk drive in 3 or any number of drives

FYI
Ocz pci-e drive is 230,000 IOPS
your ssd is only 8 2,000 IOPS
Edited by mastercommander - 5/21/13 at 8:33am
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post #8 of 11
Seems like there is some misinformation going around. First of all. You can do RAID0 with any drives of your liking. But an SSD with a 500GB will drastically reduce the performance of the SSD. You may have much better performance than a single hard drive, but not as much as a single SSD. Plus you will only have as much as space as the smallest drive x (Number of drives). So effectively it becomes 512GB. You lose 244GB on the HDD.

RAID0 with SSDs doesn't offer much of a performance gain as you would expect. It usually does worse in random reads and writes. Complete opposite with HDDs though.

Unless they are big files RAID0 wouldn't be recommended.
    
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post #9 of 11
Thread Starter 
Okay... like I said... they are indeed big big files.

Let me ask bluntly... b/c now I'm getting a little confused w/ the excess of info. I honestly don't fully understand the different types of read/write 4k, random seeking, etc stuff.... that will take me a LOT of research to figure out. So... here's the basics, b/c I don't think I explained it well above. I probably will a little misleading.. sorry about that!

Basics:

- this is a 100% read only setup. i do not write to these drives
- One single file can be 2GB itself. Many are around 1GB, 500MB. Again... these are single files.
- Others are multi-sampled instrument files/patches.... the patch gets doubleclicked, and hundreds(sometimes thousands) of smaller wav files have to be found and loaded. the individual wav files (samples) are on average about 5-10MB a piece. Sometimes they are 20-30MB.
- Some multi-sampled instruments have very very small wav files attached to them... which load up lightning fast anyway on just my regular HD... so i'm not really concerned here.

I'm most concerned about the large individual files.... and the multi-sampled instrument files that take a long time to load b/c it has to read 500 x 10MB wav files.

Will I see a benefit theoretically from Raid 0?


I read a post from another audio guy on a different forum that he sees a benefit. However... I want to try to confirm from people who do this all of the time here on this forum before I spend the extra $160 / SSD. If there's any type of imporvement in large file load times... and bulk file load times... i'm all in.
post #10 of 11
Ok so let me basicly say what I did but easier to understand. In a raid 0 it will be two times faster with 2 drives, however since you are sending small-mid size storage (<10GB) you are not going to benefit from a raid 0 but rather by a faster ssd with more IOPS(random reads/writes)

So the speeds of read/write is the consistent speed it will be.
The IOPs is how fast it starts to transfer the files over. (Its basicly the latency in ram)

So because of these small files you need your ssd to start transfer as quickly as possible.
IOPS are very important to what you need and the consistent speed is also important but your ssd will not start file transferring as fast as a quicker drive.

1)so the process is you are reading off your ssd and so then your ssd is now starting up. ( this process is the random reads/writes and measured in IOPS)
2)Then your ssd is now fully up and now is Reading the files. (this process is the consistent speed, this is measured in MB/S)

Now that i got that covered, your SSD in Raid 0 will increase in the consistent speed but not in the Start up speed.

Your SSD's IOPS speed is 82,000 IOPS
While a ocz PCI-e SSDs are about 200,000 IOPS that is an increase of over 100% in how fast it starts Reading/Writing.
Edited by mastercommander - 5/21/13 at 3:03pm
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