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Oracle Solaris ZFS Administration Guide     Oracle Solaris 11 Express 11/10
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Document Information


1.  Oracle Solaris ZFS File System (Introduction)

2.  Getting Started With Oracle Solaris ZFS

3.  Oracle Solaris ZFS and Traditional File System Differences

ZFS File System Granularity

ZFS Disk Space Accounting

Out of Space Behavior

Mounting ZFS File Systems

Traditional Volume Management

New Solaris ACL Model

4.  Managing Oracle Solaris ZFS Storage Pools

5.  Managing ZFS Root Pool Components

6.  Managing Oracle Solaris ZFS File Systems

7.  Working With Oracle Solaris ZFS Snapshots and Clones

8.  Using ACLs and Attributes to Protect Oracle Solaris ZFS Files

9.  Oracle Solaris ZFS Delegated Administration

10.  Oracle Solaris ZFS Advanced Topics

11.  Oracle Solaris ZFS Troubleshooting and Pool Recovery

A.  Oracle Solaris ZFS Version Descriptions


ZFS File System Granularity

Historically, file systems have been constrained to one device and thus to the size of that device. Creating and re-creating traditional file systems because of size constraints are time-consuming and sometimes difficult. Traditional volume management products help manage this process.

Because ZFS file systems are not constrained to specific devices, they can be created easily and quickly, similar to the way directories are created. ZFS file systems grow automatically within the disk space allocated to the storage pool in which they reside.

Instead of creating one file system, such as /export/home, to manage many user subdirectories, you can create one file system per user. You can easily set up and manage many file systems by applying properties that can be inherited by the descendent file systems contained within the hierarchy.

For an example that shows how to create a file system hierarchy, see Creating a ZFS File System Hierarchy.