building a RAID system - yup - superglue
alvin at Mail.Linux-Consulting.com
Thu Oct 9 07:47:55 EDT 2003
hi ya robert
On Thu, 9 Oct 2003, Robert G. Brown wrote:
> On Wed, 8 Oct 2003, Alvin Oga wrote:
> > - will never touch a tape backup again ... too sloow
> > and too unreliable no matter how clean the tape heads are
> > ( too slow being the key problem for restoring )
> C'mon, Alvin. Sometimes this is a workable solution, sometimes it just
> plain is not. What about archival storage? What about offsite storage?
> What about just plain moving certain data around (where networks of ANY
> sort might be held to be untrustworthy). What about due diligence if
> you were are corporate IT exec held responsible for protecting client
> data against loss where the data was worth real money (as in millions to
> billions) compared to the cost of archival media and mechanism? "never
> touch a tape backup again" is romantic and passionate, but not
> necessarily sane or good advice for the vast range of humans out there.
yup .. maybe an oversimplied statement ... tapes are my (distant) 2nd
choice for backups of xx-Terabyte sized servers..
disk-to-disk being my first choice
( preferrably to 2 other similar sized machines )
( it's obviously not across a network :-)
i randomly restore from backups and do a diff w/ the current
servers before it dies ..
> Pants AND suspenders. Superglue around the waistband, actually. Who
> wants to be caught with their pants down in this way?
always got bit by tapes... somebody didnt change the tape on the 13th
a couple months ago ... and critical data is now found to be missing
- people do forget to change tapes ... or clean heads...
( thats the part i dont like about tapes .. and is the most
( common failure mode for tapes ... easily/trivially avoided by
( disks-to-disk backups
- people get sick .. people go on vacations .. people forget
- no (similar) problems since doing disk-to-disk backups
- and i usually have 3-6 months of full backups floating around
in compressed form
Beowulf mailing list, Beowulf at beowulf.org
To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
More information about the Beowulf