On Wed, Jan 25, 2006, Ez-Aton wrote about "Re: Looking for Backup solutions for Linux": > 12 / 2 (=half a dozen) * 20GB (per volume) = 120GB > I can't see any resonable priced internet line which supports such > online backup. USB IDE disks I do not recommend, for their low > performance, and low reliablity. There is a reason why tapes are still > the most common backup solution for a certain (and above) amounts of data.
When people talk about backup sizes, they often forget to mention the nature of these backups: are we talking about 120 GB of new data every week (say, the logs of a million new transactions), or about the contents of 10 computers of developers, which may total 120 GB but includes a lot of repeated content (such as OS files) and only small parts of the total volume change often? When the entire volume of data is new, indeed online backup will require a lot of bandwidth (with a standard cheap 128kbit adsl/cable connection, you can only upload about 10 GB per week), but perhaps not prohibitive. When not all the data is new every week, this sort of backup becomes very easy. When we're talking about backup up developer workstations, and the remote backup service not only avoids downloading unchanged files, but even avoids downloading identical files from different computers (such as workstation files), this type of remote backup can be made very space efficient and therefore quite cheap. -- Nadav Har'El | Friday, Jan 27 2006, 28 Tevet 5766 [EMAIL PROTECTED] |----------------------------------------- Phone +972-523-790466, ICQ 13349191 |This space is for sale - inquire inside. http://nadav.harel.org.il | ================================================================= To unsubscribe, send mail to [EMAIL PROTECTED] with the word "unsubscribe" in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
