[lug] Robust storage
lists at danielwebb.us
Mon May 2 00:52:38 MDT 2005
On Sun, May 01, 2005 at 05:19:20PM -0600, Sebastian Sobolewski wrote:
> Here is my paranoid setup:
> 2 systems, each with a disk arrays running raid5. The systems have
> duplicates of all files I consider critical rsynced to each other. Both
> systems are running with disk caches disabled, ext3 with journal and
> attached to a UPS ( configured to shutdown if there is less then 15 min
> of battery left ) . All files have MD5 hashes calculated and the hashes
> are validated to make sure any files that have not changed in the last
> day match their hash. ( IE the file did not get silently corrupted
> overnight ) And weekly backups to DVD of new files. I also run badblocks
> on the disk drives every few weeks.
> But this may be overkill for most situations.
That sounds excellent! Can you post the scripts you use for the MD5
creation/validation, or at least send them to me?
Do you have a problem with shortened disk life after turning the cache off? I
just tried it on my server, and it sounds like it's about to fly apart when I
start a backup...
I just discovered rdiff-backup, that looks really nice for paranoids like us.
It is a mirror like rsync, but it stores the diffs, so you can go back to any
version in the past without too much overhead.
Anyone have any bad experience with it?
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