Help explain wierd RAID configs and recommend one

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RavinDJ

Supreme [H]ardness
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So I'm looking to set up a server with 3 VMs. Two of them will each have 200GB of storage for a total of 400GB and the 3rd should have at least 1.8-2.0TB, but preferably around 2.5TB

RAID 5 for H710P/H710/H310 (3-16 HDDs) add $0.00

RAID 10 for H710P/H710/H310 (4-16 HDDs in pairs) [Included in Price]

RAID 0+RAID 0 for H710P/H710/H310 (1 + 1-15 HDDs) add $0.00

RAID 1+RAID 1 for H710P/H710/H310 (2 + 2 HDDs) add $0.00

RAID 1+RAID 5 for H710P/H710/H310 (2 + 3-14 HDDs) add $0.00

RAID 1+RAID 10 for H710P/H710/H310 (2 + 4-14 HDDs) add $0.00

RAID 6 for H710P/H710 (4-16 HDDs) add $0.00

RAID 50 for H710P/H710/H310 (6-16 HDDs) add $0.00

RAID 60 for H710P/H710 (8-16 HDDs) add $0.00

Right now, I understand RAID 5 and that's what I'm using, but I'd like to use something more safe.

Thanks!
 
Rather than defining each one of those RAID configurations, the wiki page covers most: http://en.wikipedia.org/wiki/Nested_RAID_levels

The ones like RAID 0 + RAID 0 would imply (to me) that you will be getting 2 arrays of RAID0 (rather than one larger array). Same with all the other "+" combinations.

The best question to ask is what are you expecting with your server--speed, speed + redundancy, redundancy, and how fault-tolerant do you want it to be (i.e., one drive can fail, two drives can fail, etc...)?
 
If you're concerned about the safety of the RAID, then you do have a backup separate from the RAID, right?
 
That looks like Dell RAID selector. I would do embedded OS for ESXi and RAID 6 for the data itself. If I remember correctly, you don't want to use a hardware RAID card with ZFS, so don't.
 
dhluke said:
That looks like Dell RAID selector. I would do embedded OS for ESXi and RAID 6 for the data itself. If I remember correctly, you don't want to use a hardware RAID card with ZFS, so don't.
Click to expand...

Yes, with ZFS use just a straight SATA controller, no raid etc.
 
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