What is the difference between Domain disk space and Hard disk quota?
Domain disk space - a calculation of everything the domain uses disk space for i.e. web, mail, databases, etc.
Hard disk quota - a calculation of disk space used by a domains ftp user account i.e. web files.
Domain disk space
This is how much disk space is used by the entire domain. It is made up of Plesk statistics and includes the amount of disk space taken by web pages, mail accounts, databases and other domain data including options specified in the statistic settings on Server -> Server preferences page in the Plesk CP.
Hard disk quota
Is a file system feature that limits how much disk space can be taken by the files which are owned by a specific system account (either domain FTP user or webuser or subdomain FTP user).
This file system quota cannot be exceeded. If the limit is reached, the system user will not be able to create new files and will receive the error “no more space left on device”.
Reference : http://parallels.com
ln: Make links between files
A “hard link” is another name for an existing file; the link and the original are indistinguishable. Technically speaking, they share the same inode, and the inode contains all the information about a
file–indeed, it is not incorrect to say that the inode _is_ the file. On all existing implementations, you cannot make a hard link to a directory, and hard links cannot cross file system boundaries. (These
restrictions are not mandated by POSIX, however.)
“Symbolic links” (”symlinks” for short), on the other hand, are a special file type (which not all kernels support: System V release 3 (and older) systems lack symlinks) in which the link file actually
refers to a different file, by name.
`ln’ makes links between files. By default, it makes hard links; with the `-s’ option, it makes symbolic (or “soft”) links. Synopses:
ln [OPTION]… [-T] TARGET LINKNAME
ln [OPTION]… TARGET
ln [OPTION]… TARGET… DIRECTORY
ln [OPTION]… -t DIRECTORY TARGET…
* If two file names are given, `ln’ creates a link to the first file from the second.
* If one TARGET is given, `ln’ creates a link to that file in the current directory.
Example:
@dell:~/x$ ls -li
total 0
1268369 -rw-r–r– 1 user1 user1 0 Jan 13 16:42 1
1268732 lrwxrwxrwx 1 user1 user1 1 Jan 13 16:42 2 -> 1
1268733 -rw-r–r– 2 user1 user1 0 Jan 13 16:43 3
1268733 -rw-r–r– 2 user1 user1 0 Jan 13 16:43 4
@dell:~/x$
