[K12OSN] Two SATA mirrors

[Les Mikesell]

roger wrote:
> On Tue, Sep 8, 2009 at 12:43 PM, Henry Hartley<henryhartley at westat.com> wrote:
>> Since funds are a little tight I’m tempted to go with your second option –
>> Linux based software RAID. Am I right in assuming that as long as I have
>> enough SATA connecters I should have all the hardware I need for that? I
>> think I need to do a bit more research before I move forward. Do you know of
>> good (and relatively recent) resources explaining how software RAID is done?
>>
> 
> I went a slightly different approach for my home box.  I went with 2
> 500G sata, use one for storage, then rsync it in the middle of the
> night.  I was paranoid how easy it would be to take the disks out of
> that box and throw them in something else if this system dies.  At
> worst, I lose something that's not synced yet.   Of course, I could
> cron the sync job to be every 5 minutes or so.

Software raid is just as easy to move as a single drive - in fact if you 
move a single drive both copies will still work.   The rsync copy does 
have the advantage of possibly surviving some types of disasters that 
would crash the system before being copied, though.

-- 
   Les Mikesell
    lesmikesell at gmail.com