VERITAS Volume Manager 3.5 Migration Guide (August 2002)

General Information Regarding Conversion Speed Final 24 July 2002
40 VERITAS Volume Manager Migration Guide
◆ mirrored volumes. Mirrored volumes typically do not take more time to convert than
simple volumes. Volumes that are mirrored and striped at the same time would take
longer, but LVM currently does not allow this.
Currently, after conversion, mirrored volumes are not automatically synchronized
because a large mirror could take hours to complete.
For example, in tests, a 150 GB volume group consisting of 20 simple logical volumes
takes approximately 35-40 minutes to convert. In contrast, the same volume group
(150 Gb) consisting of mirrored volumes that need to be synchronized can take 30-40
hours to convert.
Note If you convert mirrored volumes, you must synchronize them in a separate step.