Scenario—Transactional Volumes

Transactional volumes provide logging capabilities for UFS file systems, similar to UFS Logging. The following example, drawing on the sample system explained in Chapter 4, Configuring and Using Solaris Volume Manager (Scenario), describes how transactional volumes can help speed reboot by providing file system logging.

Unless your situation requires the special capabilities of transactional volumes, specifically the ability to log to a different device than the logged device, consider using UFS logging instead. UFS logging provides superior performance to transactional volumes.

The sample system has several logical volumes that should be logged to provide maximum uptime and availability, including the root (/) and /var mirrors. By configuring transactional volumes to log to a third RAID 1 volume, you can provide redundancy and speed the reboot process.