| Posted by jarchee, 10-20-2009, 12:58 PM | | Hi,
I just got a Proliant DL360 G6 and I'm configuring it.
I'm not new to setting up the server but this is the first time I'm setting Raid 1+0 in bios. and I'm excited!
Just to make sure I'm asking the procedure.
I have 4 hard drives. and a P410i Raid controller that supports Raid0, 1+0, 5, 50. I want to install a Raid 1+0 that requires 4 HDs. and Centos as operating system to work for me as a webserver.
Questions:
How many logical drives I have to assign?
How many parity groups I have to make?
how much boot partition might be suitable? (4 or 8)
Thanks for your help
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| Posted by jarchee, 10-20-2009, 01:09 PM | | got an answer to one of them. no parity.
Can you help me with other 2?
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| Posted by DJMizt73, 10-20-2009, 01:18 PM | | depends on the OS but typically a 100MB /boot should be sufficient
edit: I read your post wrong - disregard
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| Posted by jarchee, 10-20-2009, 01:22 PM | | yes, that's true for centos.
What about the logical drive selection? I see 4 drives here with an x to select them. when I press enter on anywhere(either on hard drives that I've selected or raid 1+0 selection) it will prompt me that I have setup A hard drive with size ###.## as logical hard drive (A hard drive = 1?)
So I'm not quite sure what I'm doing here in this part.
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| Posted by DJMizt73, 10-20-2009, 01:29 PM | | if you want to build a RAID 10 - first you'll need to build two RAID-0(stripe) logical drives, then combine those two into a RAID-1(mirror)
some RAID controllers will make you do the opposite sequence - so try each way
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| Posted by jarchee, 10-20-2009, 01:34 PM | | So can I create 2 raid0 logical drives in bios and then continue making raid 1 in centos by software? is it efficient?
what would you do?
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| Posted by DJMizt73, 10-20-2009, 02:05 PM | | no you do it all in the controller
you create two raid-0 arrays then combine those to a raid-1 array
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| Posted by jarchee, 10-20-2009, 02:15 PM | | it does not allow me to do that.
In Raid Setup, I selected 4 hard drives as logical hard drives, which are each 146 GB, and then selected raid 1+0 and it gave me in result one drive which is 279GB usable.
what do you think?
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| Posted by larry2148, 10-20-2009, 02:18 PM | | You will have two logical drives each composed of two physical drives. At that point you'll tell the raid card to create a mirrored array and choose those two logical drives as the devices. At that point I suppose you would have one logical drive, at least according to the Operating System.
If your raid card supports raid 1+0, don't do anything with raid in the OS or you won't be using the full potential.
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| Posted by DJMizt73, 10-20-2009, 02:26 PM | | you're RAID controller is smart enough to do the two step process - so yes in a RAID-10 you will end up with one logical drive with 279GB
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| Posted by jarchee, 10-20-2009, 02:29 PM | | Ok now I'm confused.
is this what I should do?
at first I select 2 hard drives and set them as logical drives with raid 0.
again I do this to other remained physical drives and set them as logical with raid 0.
but now in the main menu I dont see any setting that refers to making a raid 1 out of these two.
There are:
Create logical drive (when I click at this point it says no physical drive found)
View logical drive (which just views them)
delete logical drive
select as boot controller
manage license keys
cache settings
how should I make the raid 1 at this point?
Is this procedure right or wrong? please advise.
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| Posted by jarchee, 10-20-2009, 02:31 PM | | So I just select those 4 hard drives as logical with raid 1+0 and then continue installing Centos.
Right?
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| Posted by DJMizt73, 10-20-2009, 02:42 PM | | yes - it seems like thats the procedure for your certain RAID controller ..after its done creating, you can always check the arrays to make sure it created the proper RAID level
then proceed on installing FreeBSD ...erm centos
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| Posted by jarchee, 10-20-2009, 02:44 PM | | Thanks, I think this P410i is really something!!
Thanks for your advise. I'll try and let you know.
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| Posted by Jeremy, 10-20-2009, 03:04 PM | | Use the smart install that came with the server... it will do all of this.. and install centos/rhel for you.
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