Your data safer than ever - new backup policy http://www.wikidot.com/forum/t-23290/your-data-safer-than-ever-new-backup-policy Posts in the discussion thread "Your data safer than ever - new backup policy" http://www.wikidot.com/forum/t-23290#post-67167 Re: Your data safer than ever - new backup policy http://www.wikidot.com/forum/t-23290/your-data-safer-than-ever-new-backup-policy#post-67167 Mon, 12 Nov 2007 14:21:14 +0000 Radaghast 13735 …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.

]]> http://www.wikidot.com/forum/t-23290#post-66055 Re: Your data safer than ever - new backup policy http://www.wikidot.com/forum/t-23290/your-data-safer-than-ever-new-backup-policy#post-66055 Thu, 08 Nov 2007 12:43:52 +0000 Radaghast 13735 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 ;)

]]> http://www.wikidot.com/forum/t-23290#post-62315 Re: Your data safer than ever - new backup policy http://www.wikidot.com/forum/t-23290/your-data-safer-than-ever-new-backup-policy#post-62315 Sat, 27 Oct 2007 16:43:25 +0000 s3153437 45892 In fact, it is difficult to make date safe

]]> http://www.wikidot.com/forum/t-23290#post-61112 Re: Your data safer than ever - new backup policy http://www.wikidot.com/forum/t-23290/your-data-safer-than-ever-new-backup-policy#post-61112 Tue, 23 Oct 2007 11:38:24 +0000 hopabonk 14081 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.

]]> http://www.wikidot.com/forum/t-23290#post-58509 Your data safer than ever - new backup policy http://www.wikidot.com/forum/t-23290/your-data-safer-than-ever-new-backup-policy#post-58509 Tue, 16 Oct 2007 13:22:41 +0000 michal frackowiak 1 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.

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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.

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