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11.2. Overview of Supported File Systems
This section shows basic technical information on each file system supported by Red Hat Enterprise Linux 6.
Table 11.1. Technical Specifications of Supported File Systems
| File System | Max Supported Size | Max File Offset | Max Subdirectories (per directory) | Max Depth of Symbolic Links | ACL Support | Details |
|---|---|---|---|---|---|---|
| Ext2 | 8TB | 2TB | 32,000 | 8 | Yes | N/A |
| Ext3 | 16TB | 2TB | 32,000 | 8 | Yes | Chapter 5, The Ext3 File System |
| Ext4 | 16TB | 16TB[a] | Unlimited[b] | 8 | Yes | Chapter 6, The Ext4 File System |
| XFS | 100TB | 100TB[c] | Unlimited | 8 | Yes | Chapter 8, The XFS File System |
[a]
This maximum file size is based on a 64-bit machine. On a 32-bit machine, the maximum files size is 8TB.
[b]
When the link count exceeds 65,000, it is reset to 1 and no longer increases.
[c]
This maximum file size is only on 64-bit machines. Red Hat Enterprise Linux does not support XFS on 32-bit machines.
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Note
The listed maximum file and file system sizes are what Red Hat has tested and supports. This does not take into account the theoretical maximum limits.
Both the maximum supported size and maximum file offset columns assume 4k blocks.
