When considering a file system choice, you should consider how large the file system needs to be, what unique features it should have, and how it performs under your workload. The most notable differences from a user’s perspective are related to scalability and performance. From the application programmer’s point of view, there are relatively few differences. POSIX-compliant file systems provide support for a well-defined set of system calls, such as read(), write(), and seek(). The newest version of the Ext file system family, Ext4, is fully supported in all versions of Red Hat Enterprise Linux since 5.6.Īll of these file systems are POSIX compliant and are fully compatible with all later Red Hat Enterprise Linux releases. The Red Hat Enterprise Linux 4 and Red Hat Enterprise Linux 5 platforms have traditionally provided two main file systems for the Ext2 and Ext3 class of systems. Local file systems are also the most common file systems used on SAN attached storage when the SAN’s exported device is not shared. For example, a local file system is the only choice for internal S-ATA or SAS disks and is used when your server has internal hardware RAID controllers with local drives. Local file systems are file systems that run on a single, local server and are directly attached to storage. Shared storage or shared disk file system. At the most general level, file systems available in Red Hat Enterprise Linux can be grouped into the following major categories: Different types of file systems solve different kinds of problems, and their usage is application specific. Red Hat Enterprise Linux supports a variety of file systems. This paper describes some of the file systems that ship with Red Hat Enterprise Linux and provides historical background and recommendations on the right file system to suit your application.
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