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--- backup [2015/07/24 09:55] – external edit 127.0.0.1
+++ backup [2023/08/21 07:14] (current) – admin
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 In order to answer to these questions, we prepared some systems (hardware and software) that save/backup/move our data in an automatic fashion. This way the human intervention (and so the possibility of error) is reduced at the minimum.\\
 \\
-**Remember that when we say __home directory__, we talk about your homedirs stored on the file server**, we don't do backup of workstations or laptops.\\ For some suggestion on how to backup your laptop see [[backup:laptops|here]].\\
+**Remember that when we say __home directory__, we talk about your homedirs stored on the file server**, we don't do backup of workstations.\\ For some suggestion on how to backup your laptop see [[backup:laptops|here]].\\
-If a workstation stop working is not a problem, we can repair/substitute the workstation without loss of important data. In case of Personal Laptops we don't offer any kind of safeguard, regarding data stored on the laptop's disk.
+If a workstation stop working is not a problem, we can repair/substitute the workstation without loss of important data.
 ===== Why =====
-The most important thing that humans and computer share is just one: **the data recorded in memory**. No matter what kind of computer, interface, network connection or whatever else mechanical/logical device users can/must use: if they can't access their data (stored inside the computer), problem arise. For a user isn't important where or how the data are saved, the only important thing is that hi/her needs access to these data, even in case of his/hers fault or in case of technical problems (yes, earthquake and flood are just technical problems).
+The most important thing that humans and computer share is just one: **the data recorded**. No matter what kind of computer, interface, type of connection or whatever else mechanical/logical device users can/must use: if they can't access their data (stored inside the computer), problems arise. For a user it is not important where or how the data are saved, the only important thing is that he/she needs access to these data, even in case of his/hers fault.
 ===== How =====
@@ Line 32: / Line 32: @@
 ==== .snapshot directory ====
-Every user can find inside his/hers homedir on the central filer an hidden directory named **.snapshot**. Inside this directory exists others directories that have name
+we maintain a read-only copy of all data directly in the file server, for up to 3 months. Users can request to access his/hers data back in time, providing the time range they want to recover from.
-  * hourly.[0-23]
+the possibilities are:
-  * nightly.[0-6]
+  * hourly: last 24 hours
-  * weekly.[0-3]
+  * daily: last 3 months or 90 days
-As the name suggest, these directory contain the file changed during the **lasts 24 hours, 7 days and 4 weeks**.\\ If the wanted file was deleted/changed during this period of time, the user have to search inside these directories, in order to find it.
-If the searched file is found, the users can copy it where it want and the restore is done, the files inside .snapshot subdirs are accessible only in read mode and cannot be changed/modified/deleted/renamed.
 ==== Hard Disk in a central backup sever ====
-Every day at 00.30 a backup process copies all the files present in the users directories to another server, accessible only to System Administrators. Stored in this server we maintain the **last 30 days** of all the homedirs, so in case of failure of the central file server we can restart with only 1 day of lost.
+On a secondary server, accessible only to Network System admins, we store a copy of all the data/files present in the primary server. We can then recover pretty fast the data, even in case of failure of the primary server.
-Not vital files aren't backed up. [[backup:list|here]] you can find the list of files excluded.
+Stored in this server we maintain the **last 180 days** of all the homedirs, so in case of failure of the central file server we can restart with only 1 day of lost.
-\\
 To retrieve a file from this server the user must ask it to System Administrators, __and please don't forget the details about the file__.
 ===== Laptops =====
-Each Laptop managed by the lab is configured to backup all the files on one of
+Each Laptop managed by the lab must be configured to backup all the work files using the Backup solution provided by EPFL (aTempo Lina, at the moment).
-our backup server. this function works only when the laptop is connected to
+The backup solution for laptop is under the direct control of the user, please follow strictly the directives so to no lose your data/files.
-the EPFL network using a network cable, please connect your laptop at least
-once per week to the network using the cable.
 \\