On 24/03/2009 22:15, Dylan Distasio wrote:
Hi all- I would like to put together a RAID10 array utilizing 2x1TB drives and 2x500 gig drives I have in my home Linux server. Is the best way to do this to create 2 separate RAID1 arrays, one for each set of drives, and then a RAID0 array made up of the RAID1 ones? I just wanted to verify that I am going about this correctly, and also get input on whether there are any disadvantages to this setup. I would prefer not to split these up into two separate RAID10 arrays because I want the combined space available under one. Thanks for any comments.
I think you can mix drive sizes under md RAID-10 - much as you're proposing to above with your RAID-0 of different-sized RAID-1s - and md will just do the Right Thing. I'd go for testing that and play with layouts (near, far, offset) to suit your requirements before worrying about setting up RAID 1+0.
Actually with your hardware I'd probably set up a 1TB RAID-0 with the 500G drives then make a RAID-5 from the 3 1TB devices (2 raw drives plus one md RAID-0). If you can be bothered try benchmarking that too; as well as giving you more storage I think it'll probably match the RAID-10 or RAID 1+0 for performance.
Cheers, John. -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
