@section s4u_ex_io Simulating disks and files
The examples of this section demonstrate how to interact with the
-simulated storages.
+simulated storages.
- - <b>File Management</b>. @ref examples/s4u/io-file-system/s4u-io-file-system.cpp \n
- This example illustrates the use of operations on files
- (read, write, seek, tell, unlink, ...).
+SimGrid provides two levels of abstraction. You can either use the
+FileSystem plugin, or interact directly with the disks. At the file
+system level, you can open files and interact with them. A write
+operation may fail if the disk is already full. Using the direct (low
+level) interface, you just specify the amount of data that is written
+or read, and this is done unconditionnally. Both levels have
+respective advantages, depending on what you want to model.
- - <b>Access to raw storage devices </b>.
+ - <b>Access to raw storage devices</b>.
@ref examples/s4u/io-storage-raw/s4u-io-storage-raw.cpp \n
This example illustrates how to simply read and write data on a
simulated storage resource.
+ - <b>File Management</b>. @ref examples/s4u/io-file-system/s4u-io-file-system.cpp \n
+ This example illustrates the use of operations on files
+ (read, write, seek, tell, unlink, ...).
+
- <b>Remote I/O</b>.
@ref examples/s4u/io-file-remote/s4u-io-file-remote.cpp \n
I/O operations on files can also be done in a remote fashion,
