[Novalug] NAS Box using software RAID

[Jay Hart]

RAID 1 sounds like what I want.

Jay

> On Mon, Jul 12, 2010 at 01:29:53PM +0000, Jeff Stoner wrote:
>> On Mon, 12 Jul 2010, Jay Hart wrote:
>>
>> > I'm standing up a new NAS Box (using FreeNAS) using matching 1TB Drives
>> (total
>> > of two drives).  System disk will be a USB flash disk.
>> >
>> > 1. What is the best combo to use for these two drives?
>>
>> Mirroring for 1 TB of space, LVM for 2 TB of space. I suppose you could do
>> RAID 10 if you half each drive but I've not tried that.
>
> RAID 10 (RAID 1+0 I presume) for two drives?
>
>> > 4. What would be the best plan to use for a 2 drive RAID system?
>>
>> You only have 2 options (in my mind) - striping and mirroring. As I said,
>> you might be able to do RAID 10 with some partitioning but it's not
>> something I've tested.
>
> RAID 10 with partitions on two drives is possible (in Linux at least) but
> would be very sub-optimal.  You'll lose both
> the write speed and reliability advantages RAID 10 can offer.
>
>> RAID 5 with only 2 physical drives? Where are you going to write your
>> parity bits?
>
> Three devices are required for RAID 5.
>
> Regards,
> -A. Dave
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