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RAID 0 questions - Page 2

post #11 of 17
Thread Starter 
The only problem with that is:

I want to run my SSD in AHCI and I want to use TRIM.

Both of those features are only available if I have the SSD on Port 0 of the ICH10R of the Intel Controller.

So that is a must because I want max performance for my SSD.


I thought:

ICH10R Port 0:SSD
Marvel 6GB/s Port 0:HDD Raid 0
Marvel 6GB/s Port 1:HDD Raid 0
ICH10R: DVD , Bluray etc


Here the PRO/CONTRA:

For every scenario the SSD WILL be on Port 0 ICH10R because TRIM and AHCI is a must.

1.)Everything on the ICH10R:

+ there would not be any delay between controllers because everything is on the Intel Controller.

- SSD performance could be throttled because of over population of the ICH10R

2.)2xHDD on the Marvel 6GBit/s in RAID 0 (because I want all the storage)
Only drives + SSD on ICH10R

+Better SSD performance because fewer components are on the ICH10R
- Could there be a delay between the 6GBit/s SATA 3 Controller with the Raid 0 HDD´s and the ICH10R???

delay:time lags ...meaning the amount of time both controllers need to comunicate to each other before execution for example shut down delay ?


Basically the question is:

Is it OK to run everything on the Intel Controller?
Because that would be the best possible way.
But will the SDD performance be throttled through the full population of the ICH10R?


Or would it be better to just do a RAID 0 on the SATA 3 and have the rest on the ICH10R?
But would there be delays?
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post #12 of 17
disable the Marvell in the BIOS - it serves no useful purpose for you.

Enable RAID on the Intel controller, plug in the all the drives. It doesn't matter which ports you use - TRIM is available on all of them.

Set up the HDDs in your choice of RAID, leave the SSD alone.

Install the latest RST drivers, and you get TRIM on your SSD and RAID on your HDDs without issue, and you don't need to wait for the Marvell controller to initialise.

You won't get any bottlenecking through the Intel controller at all with your drives.
post #13 of 17
Thread Starter 
Quote:
Originally Posted by the_beast View Post
disable the Marvell in the BIOS - it serves no useful purpose for you.

Enable RAID on the Intel controller, plug in the all the drives. It doesn't matter which ports you use - TRIM is available on all of them.

Set up the HDDs in your choice of RAID, leave the SSD alone.

Install the latest RST drivers, and you get TRIM on your SSD and RAID on your HDDs without issue, and you don't need to wait for the Marvell controller to initialise.

You won't get any bottlenecking through the Intel controller at all with your drives.

That is all perfect except one problem:

The SSD needs to run in AHCI for optimal performance if I enabled RAID that would not be possible.
I don´t need to run the drives in RAID I would actually prefer them seperate.

I would only consider running the HDD´s in RAID if the SATA 3 controller would not cause any delay between the ICH10R .

Ultimately my question is if there will be any performance throttle if 5 of the 6 Ports of the ICH10R would be populated with:

Port 0 :SSD
Port 1 :HDD
Port 2 :HDD
Port 3 :Burner
Port 4 :Blue Ray

Or if there would be a delay between controllers if I set it up like this:

SATA 3 :
Port 0 :HDD
Port 1 :HDD

ICH10R:
Port 0 :SSD
Port 4 :Burner
Port 5 :Blue Ray
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post #14 of 17
Quote:
Originally Posted by Kung Pow View Post
That is all perfect except one problem:

The SSD needs to run in AHCI for optimal performance if I enabled RAID that would not be possible.
I don´t need to run the drives in RAID I would actually prefer them seperate.
Nope, no problem.

RAID is a subset of AHCI - if you are in RAID, then you are already in AHCI. Your drive will run exactly the same whether you have RAID or AHCI selected in the BIOS, and all the performance features will be available to you. The only time you lose TRIM would be if you actually put the SSD into a RAID array itself - you would then lose TRIM support regardless of the controller.

Whether you run your HDDs in RAID or not is up to you - if you don't want (or need) RAID then don't. You can have your controller set in RAID or AHCI in this case - it will make no difference aside from the extra few seconds the controller will spend initialising when you boot.

You will not get any bottlenecks sticking with the Intel controller with your drives - using the Marvell controller with just add further delay to the boot (and may reduce performance, as frankly it's crap anyway).
Edited by the_beast - 5/26/11 at 7:04am
post #15 of 17
Thread Starter 
Quote:
Originally Posted by the_beast View Post
Nope, no problem.

RAID is a subset of AHCI - if you are in RAID, then you are already in AHCI. Your drive will run exactly the same whether you have RAID or AHCI selected in the BIOS, and all the performance features will be available to you. The only time you lose TRIM would be if you actually put the SSD into a RAID array itself - you would then lose TRIM support regardless of the controller.

Whether you run your HDDs in RAID or not is up to you - if you don't want (or need) RAID then don't. You can have your controller set in RAID or AHCI in this case - it will make no difference aside from the extra few seconds the controller will spend initialising when you boot.

You will not get any bottlenecks sticking with the Intel controller with your drives - using the Marvell controller with just add further delay to the boot (and may reduce performance, as frankly it's crap anyway).

First of , yes you are really a beast !

Great knowledge !!

I never knew that RAID mode would have AHCI already implemented lol?
I contacted Gigabyte and they also said it is no problem to only use the ICH10R.

So I will do the following:

Disable the SATA 3 controller in the BIOS for extra speeds of the ICH10R.

Port arrangement:

ICH10R:

Port 0:SSD
Port 1:
Port 2:HDD
Port 3:HDD
Port 4:Burner
Port 5:Blue Ray

I am leaving Port 1 to give the SSD room to breathe as instructed by the Gigabyte tech ..although I don´t know if that will really make a difference^^


Since your great advice about RAID mode still having all speed features of AHCI I am thinking about running my HDD´s in RAID 0.

I wanna encrypt them both so it might be better to individually do that by not setting them in RAID.
Also they wouldn´t be linked together and could be disconnected if needed.

Not sure yet.

But I am definately sure you will get +rep for that extraordinary info!

Thank you
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post #16 of 17
Quote:
Originally Posted by Kung Pow View Post
First of , yes you are really a beast !

Great knowledge !!

I never knew that RAID mode would have AHCI already implemented lol?
I contacted Gigabyte and they also said it is no problem to only use the ICH10R.

So I will do the following:

Disable the SATA 3 controller in the BIOS for extra speeds of the ICH10R.

Port arrangement:

ICH10R:

Port 0:SSD
Port 1:
Port 2:HDD
Port 3:HDD
Port 4:Burner
Port 5:Blue Ray

I am leaving Port 1 to give the SSD room to breathe as instructed by the Gigabyte tech ..although I don´t know if that will really make a difference^^


Since your great advice about RAID mode still having all speed features of AHCI I am thinking about running my HDD´s in RAID 0.

I wanna encrypt them both so it might be better to individually do that by not setting them in RAID.
Also they wouldn´t be linked together and could be disconnected if needed.

Not sure yet.

But I am definately sure you will get +rep for that extraordinary info!

Thank you
If the Gigabyte tech told you that leaving a port next to the SSD would give it breathing room then I despair for the state of their helpline - the order of the ports makes no difference. And even if it did you don't have the drives to bottleneck that controller anyway. The only thing really that should influence your port selection is cabling and drive labeling - nothing else matters.

Whether you want to run in RAID or not depends on what you're doin gwith the drives - for some uses it has a speed benefit, for others it doesn't. And it does make it hard to separate the drives later, so if you think you will want to do this then keep them apart. Similarly don't store anything you can't replace on a RAID0 array (or any non-redundant system, including single drives).

You'll probably be best off if you use TrueCrypt to add an excrypted folder or partition on your drive(s) (unless for some reason you really need to encrypt the whole drive). You can do this whether you use RAID or not though, so don't let that sway you one way or the other.
post #17 of 17
Thread Starter 
Quote:
Originally Posted by the_beast View Post
If the Gigabyte tech told you that leaving a port next to the SSD would give it breathing room then I despair for the state of their helpline - the order of the ports makes no difference. And even if it did you don't have the drives to bottleneck that controller anyway. The only thing really that should influence your port selection is cabling and drive labeling - nothing else matters.

Whether you want to run in RAID or not depends on what you're doin gwith the drives - for some uses it has a speed benefit, for others it doesn't. And it does make it hard to separate the drives later, so if you think you will want to do this then keep them apart. Similarly don't store anything you can't replace on a RAID0 array (or any non-redundant system, including single drives).

You'll probably be best off if you use TrueCrypt to add an excrypted folder or partition on your drive(s) (unless for some reason you really need to encrypt the whole drive). You can do this whether you use RAID or not though, so don't let that sway you one way or the other.
I normally encrypt all non-system partitions fully with Serpent-Twofish-AES
Crypting a both drives in RAID 0 would mean I had to crypt 2x 1TB which would take much longer than just crypting them individually.

Also if I wanted to make an image backup of them two would always be better.

But maybe a RAID 1 setup would be nice.

I am not sure ...but your info that RAID mode has all AHCI features implemented is worth gold!!
I never knew that O.o

thx again you are the man

Now I will just have to figure out what do to with the 2 1 TB drives
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