restoring system after disaster
sk...@poczta.fm
I use Veritas Backup exec 10d. I conmsider situation when my servers
will be totaly destroyed.
I know that I able to recover system and all data with IDR whan new
server will be exacly like old one. But can I use IDR to restore
system/data using different server I mean with different configuraton
from different producer ?
Thanks in advance
Mike
Chris Hoogendyk
I don't use Veritas, but the answer to your question is generic to any
backup software. If you are recovering system volumes and application
binaries, then hardware differences can be significant. Depending on how
big the difference is, you may or may not be able to manage the recovery
easily.
Example: I use Amanda for backup and recovery on Sun servers running
Solaris 9. I have a server that is a Sun Blade 100 (okay, I realize
that's not intended as a server, nevertheless ...), and I have several
that are Sun Enterprise E250's. Technically, those are both in the same
hardware build -- sun4u. As a test, I recovered the Sun Blade system to
a spare E250. Because there are some significant differences in how
drives and peripherals are handled on those two, I had to rebuild the
device tree and do a reconfiguration reboot. Then I was able to get it
to work. If you're interested, you can find the details via google on
the sunmanagers list with my email as part of the google search.
If the differences are more significant, then it could be that the
binaries simply won't run. I've not tried recovering from an Intel
system to an AMD system, or vice versa, but I would think that would be
a common example, and perhaps someone could chime in to relate the
issues, difficulties and procedures.
Because of these difficulties, some people use a standard procedure of
backing up data only. The assumption is that they would reinstall system
and applications and then recover the data. I think this is more common
under Windows, in part because of the roadblocks Microsoft puts in the
way (in terms of licensing and specific hardware instance), but, again,
if someone with more direct experience on that wants to chime in, it
might be helpful.
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Chris Hoogendyk
-
O__ ---- Systems Administrator
c/ /'_ --- Biology & Geology Departments
(*) \(*) -- 140 Morrill Science Center
~~~~~~~~~~ - University of Massachusetts, Amherst
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Erdös 4