backup:night
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backup:night [2007/02/23 18:00] – damir | backup:night [2007/06/05 16:59] – damir | ||
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Currently we have 2 different process of nightly backups | Currently we have 2 different process of nightly backups | ||
* The first process start around 22.00 and save, on digital tape, a copy of all the files changed during the day in the Filer (the file server where the homedirs are stored). Every Sunday, the process copies the whole content of the Filer, no matter when and if the files changed. | * The first process start around 22.00 and save, on digital tape, a copy of all the files changed during the day in the Filer (the file server where the homedirs are stored). Every Sunday, the process copies the whole content of the Filer, no matter when and if the files changed. | ||
- | * The second process start every day around midnight and save the whole content of the Filer in another file server, accessible only to the System Administrators. In this case the copy is stored on hard disks. | + | * The second process start around midnight and save the whole content of the Filer in another file server, accessible only to the System Administrators. In this case the copy is stored on hard disks. |
- | + | ||
- | == Tapes == | + | |
- | The use of digital tapes permit to maintain a very long history of the files of users. Thanks to the relative low cost of the tapes, we can have 4 months of backup. Unfortunately the tapes are difficult to manage and the access to the data is quite slow. This means that the recover of data require a lot of time.\\ | + | |
- | The management of the tapes is done by the EPFL Backup Team and every request of recover must be done by the System Administrator of the lab, that can forward the request to the responsable. Normally the access to the data recovered is quaranted in the day of request. | + | |
\\ | \\ | ||
- | == Disk == | + | ===== Backup on Tape ===== |
- | In the second case the process of recover is quite simple and fast and the data needed can be accessible during the hour. For security reason the acces to this server is limited to the System Administrators, | + | |
- | The presence of this backup is explained by the necessity to have a complete and fast way to restore the content of Filer in case of complete crash of the system. | + | The use of digital tapes permit to maintain a very long history of the files of users. Thanks to the relative low cost of the tapes, we can have 4 months of backup. Unfortunately the tapes are difficult to manage and the access to the data is quite slow. This means that the recover of a single file require a lot of time.\\ |
+ | The management of the tapes is done by the EPFL Backup Team and every request of recover must be pass from the System Administrator of the lab, that can forward the request to the responsable of backup. Normally the access to the data recovered is quaranted in the day of request. | ||
+ | |||
+ | ===== Backup on Disk ===== | ||
+ | |||
+ | In the second case the process of recover is quite simple and fast and the data needed can be accessible during the hour. For security reason the acces to this server is limited to the System Administrators, | ||
+ | The presence of this backup is explained by the necessity to have a complete, simpler and and fast way to restore the content of Filer in case of complete crash of the system. | ||
backup/night.txt · Last modified: 2015/07/24 09:28 by 127.0.0.1