How to Create a Trans Metadevice Using Mirrors (DiskSuite Tool)

You can increase data availability of a trans metadevice by using mirrors for the master and logging devices. Failure to mirror the logging device could result in significant data loss if the logging slice experiences errors. If you are mirroring the logging device, it is a good idea that the master device be a mirror also.

1. Make sure you have met the prerequisites ("Prerequisites for Creating DiskSuite Objects"), and have read the preliminary information ("Preliminary Information for Creating Trans Metadevices").

2. Refer to the tasks on creating mirrors ("How to Create a Mirror From Unused Slices (DiskSuite Tool)" to "How to Create a Mirror From a File System That Cannot Be Unmounted (Command Line)").

   Create two mirrors, one for the master device, and one for the logging device. The mirror for the master device must contain the file system.

3. Refer to "How to Create a Trans Metadevice for a File System That Can Be Unmounted (DiskSuite Tool)".

   Use the mirrors created in step 2 for the master and logging devices.