[CentOS] CentOS Server Backup Options

Les Mikesell lesmikesell at gmail.com
Tue Mar 13 14:43:32 EDT 2012

On Tue, Mar 13, 2012 at 1:26 PM, Markus Falb <markus.falb at fasel.at> wrote:
>> Tape, and tape drives, have a bad reputation.  They are difficult and
>> time consuming to verify.
> Harddisks have a bad reputation too. They fail regulary.

Yes, but if they are online, in raid, with smart monitoring, you swap
them (maybe every 5 years or so, getting better...) and let the
replacement re-sync.  Anything else and you don't find out that it is
dead until you are doing a restore.

> Anyway, I would not feel comfortable about backing up data residing on a
> harddisk to another harddisk. I believe that a backup media has to
> provide different characteristics than the original media. An incident
> that harms original should not harm the backup.

I thought the old saying was that if something was important you
should have 3 copies, and don't let the person who destroyed the first
2 touch the 3rd.

> What about if a firmware bug destroys all data on day XXX on all
> harddisks ? Well, extra paranoid maybe and of course I have not thought
> of all possible things that *could* happen.

If you've been replacing your raid drives as they die over the years,
you probably won't be left with all the same model when this event

  Les Mikesell
    lesmikesell at gmail.com

More information about the CentOS mailing list