Re: Backup media; comments would be appreciated.

From: Travis Casey (efindel_at_earthlink.net)
Date: 12/27/03


Date: Fri, 26 Dec 2003 23:39:05 GMT

Huge wrote:
> Travis Casey <efindel@earthlink.net> writes:
>>Al Dykes wrote:

>>> Are you backing up for archival purposes or just crash recovery ?
>>
>>These days, a second hard drive can be a very good backup medium, if
>>you're
>>mostly looking for crash recovery. Mirroring is one way to do it...
>
> Mirroring is useless for backups.
>
> rm -rf /usr/local/bin
>
> Ooops! Now get that back from your mirror.

Sorry; I should have said "if you're only looking for crash recovery". Of
course, real backups of some sort of much better for "bonehead error"
recovery -- and, if you'd looked farther on in my message, I suggested
another way of using a second hard drive which *does* allow recovery from
such errors.

-- 
ZZzz   |\      _,,,---,,_     Travis S. Casey  <efindel@earthlink.net>
       /,`.-'`'    -.  ;-;;,_   No one agrees with me.  Not even me.
      |,4-  ) )-,_..;\ (  `'-'
     '---''(_/--'  `-'\_)


Relevant Pages

  • Re: Server Advice Wanted.
    ... > RAID 0+1 will be more efficient (stripping and mirroring), ... which is why you see it less than RAID 5. ... > could still restore from backups because it takes day to do so, ... a network backup solution. ...
    (borland.public.delphi.non-technical)
  • Re: Best Practices on Writes
    ... The mirroring (called Life Keeper Data ... writes are done simultaneously to both drives. ... > those writes in cache. ... >>> from last good backups anyway and the cache doesn't even come into play. ...
    (microsoft.public.sqlserver.setup)
  • Re: RAIDING different size drives
    ... applies to pretend hardware RAID that is often supported by ... GB partition for mirroring with a matching partition on the other disk. ... No need to do that if you have adequate backups. ...
    (comp.sys.ibm.pc.hardware.storage)
  • Re: Program to do backups
    ... For backups, I like incremental mirroring from disk to disk on ... Under Linux, every night at 3am, a cron job runs the ...
    (Fedora)
  • Re: Raid 1 Mirror
    ... Mirroring is not a replacement for backups. ... Mirroring is meant to provide redundency in case of drive failure. ...
    (microsoft.public.windows.server.sbs)