| If we have to move to the backup server... [message #65673] |
Thu, 23 March 2006 15:30  |
Kim
Messages: 1246
Registered: October 2005
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Senior Member |
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OK, just in case... just so you are all aware of what would happen.
If we end up moving to the backup server because the main server fails completely,
seeing as the main server is a little temporamental at the moment, this is
what will happen...
1) We'll lose a few posts. I've been doing backups fairly regularily of late,
but we could lose a day, two, or up to a week depending on when I last remembered
to push the "back it up" button.
2) Web users may find that the site at news.newsgroup.com changes slightly.
I think there's an older version of the site on the backup machine (yes,
even older than the one on the main box ;o)
3) Now this is the wierd and important bit. The post numbers are different
on the backup server to the main server. This will therefore cause havoc
for users of newsgroup clients, which work off post numbers when deciding
what to download, and which posts link to which. The solution? If the worst
happens and we move to backup, you'll probably need to delete the newsgroup
(and perhaps server) from your client and put it back, so that you download
all the posts again. This will update the post numbers to match the backup
server. Otherwise you'll be not getting posts... getting posts which link
to the wrong posts... getting double ups of posts, or combinations of the
above.
Now this all only matters if we have to move to the backup server under emergency
conditions. If I go and buy a new machine and reload it from scratch and
perform a controlled changeover then I can line up the post numbers and should
be able to switch servers without anybody even noticing.
I just thought, seeing there seems to be a chance of us having a "disaster
recovery" situation I'd better inform you all of what you're likely to see
if it happens.
Cheers,
Kim.
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