Your data safer than ever - new backup policy
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started by: michal frackowiakmichal frackowiak
on: 1192540961|%e %b %Y, %H:%M %Z|agohover
number of posts: 5
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Your data safer than ever - new backup policy
michal frackowiakmichal frackowiak 1192540961|%e %b %Y, %H:%M %Z|agohover

We have just implemented a new backup solution that should secure your data even better. So far we have been doing server backups once a day, now we have a hot-backup server that holds an up-to-date copy of the main database. If the main database server fails we still have the data you have entered seconds before! The uploaded files are archived every 2 hours to a remote server too.

server.png

To summarize our backup and data storage policy:

  • we use redundant disks on the main servers — nothing happens if a disk fails
  • hot-backup database server with redundant disks — data is not lost when main server fails
  • backup of uploaded files every 2 hours
  • full backup to a server in a different datacenter every few days
  • backups of individual sites are available for download via Site Manager » backup

We are also struggling to provide the highest availability possible. In fact during 1 year operation we have experienced about 22 h outage all together, from which 18 hours were caused by our hosting provider. This makes about 99.7% availability (it would be 99.95% if you exclude network problems in the datacenter) which is not bad after all, however we have plans to improve this dramatically, by 1. moving to another datacenter, 2. building a high-availability cluster with redundant servers.

last edited on 1192542394|%e %b %Y, %H:%M %Z|agohover by michal frackowiak + show more
unfold Your data safer than ever - new backup policy by michal frackowiakmichal frackowiak, 1192540961|%e %b %Y, %H:%M %Z|agohover
Re: Your data safer than ever - new backup policy
hopabonkhopabonk 1193139504|%e %b %Y, %H:%M %Z|agohover

I am concerned about my data and it is good to know what you are doing technically, but my real worry about my data relates to a bigger unknown. How do you pay for it all?

This site is so fantastic, it seems too good to be true.

unfold Re: Your data safer than ever - new backup policy by hopabonkhopabonk, 1193139504|%e %b %Y, %H:%M %Z|agohover
Re: Your data safer than ever - new backup policy
s3153437s3153437 1193503405|%e %b %Y, %H:%M %Z|agohover

In fact, it is difficult to make date safe

unfold Re: Your data safer than ever - new backup policy by s3153437s3153437, 1193503405|%e %b %Y, %H:%M %Z|agohover
Re: Your data safer than ever - new backup policy
RadaghastRadaghast 1194525832|%e %b %Y, %H:%M %Z|agohover

What happened to that 99.7% availability? I can't access any wikidot right now, public, private, mine or others' - is it the problem of my network or of the wikidot? If the latter, what is your estimation of the time it'll be back online? Thanks in advance.

edit: it's back online, great! half an hour downtime once in a while is not that bad ;)

last edited on 1194527176|%e %b %Y, %H:%M %Z|agohover by Radaghast + show more
unfold Re: Your data safer than ever - new backup policy by RadaghastRadaghast, 1194525832|%e %b %Y, %H:%M %Z|agohover
Re: Your data safer than ever - new backup policy
RadaghastRadaghast 1194877274|%e %b %Y, %H:%M %Z|agohover

…and it's down again (at least for the last 15 minutes). I'm sorry to report that, but it seems like the performance went down after last changes.

PS: Will edit this when it's up again. It's working now.

last edited on 1194877863|%e %b %Y, %H:%M %Z|agohover by Radaghast + show more
unfold Re: Your data safer than ever - new backup policy by RadaghastRadaghast, 1194877274|%e %b %Y, %H:%M %Z|agohover
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