Here's a completely off-the-wall thought.
I have no idea if it would work, but would it be possible for you to combine the two RAID5 systems into a "software" RAID1 system? Perhaps via iSCSI?
Kind of an overcomplicated method for doing what you need, but it WOULD keep both sets of RAID5 arrays in sync with each other in realtime, and would allow things to keep running without a pause even if one of the RAID5 systems failed.
the problem again: if filesys is damaged all your raids are unusable
[Mitch]
As an example, in one test a daily rsync took over 20 minutes, while the rsync hourly took only 2 minutes... sure it adds up to more time
in >total to rsync more often, but if the systems can handle the load... the problem: to analyze all files/dirs (ATM ~2,1Billion) rsync needs more than half an hour
i think twice a day is comfortable for everyone here @ work
cheerz
--
Michael Gasch
- Central IT Department -
Max Planck Institute for Evolutionary Anthropology Deutscher Platz 6 04103 Leipzig
Germany
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