Re: Raid settings

[Wols Lists <antlists@youngman.org.uk>]

On 28/08/16 22:43, o1bigtenor wrote:
> Greetings
> 
> I have been doing some research thinking toward the future.
> 
> Is there a 'best' raid setup?

What do you want to achieve? There's no such thing as "best" - there's
only "most suitable for the circumstances".
> 
> It seems to me (a noob) that each of the options carries some negatives with it.
> 
> Is there a good option for say:
> 
> 2 - 5 disks
> 4 - 8 disks
> 6 - 12 disks
> 10 - 30 disks
> etc.
> 
> I looked at raid 5/6/10/50/60/100 and I am wondering where is the
> 'best' use of each of these options?
> 
Ignoring linear or stripe (which you seem to have done), with 2 disks
the only option is raid 1 (mirror). 3 disks gives you raid 5, and 4
disks gives you raid 6.

But do you want to make maximum use of the disk space (raid 6 is your
friend) or do you want maximum redundancy (raid 1)?

For my home system I've got 2 x 3TB in a raid1 config. I had intended to
add a 3rd drive and go raid5, but with two Barracudas I'd be an idiot
:-( If I want to go that route, I need three new proper raid drives :-(
I want maximum disk capacity with some redundancy, so raid 5 or 6 makes
most sense for me.

Without knowing what you want, we can't know what's best for you.

Cheers,
Wol