[K12OSN] Two SATA mirrors

Les Mikesell lesmikesell at gmail.com
Tue Sep 8 21:17:10 UTC 2009

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

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