By Tim Thomas on Jun 07, 2007
The Sun StorageTek 5000 NAS Appliance has a license key enabled feature which switches on support for "Compliance Volumes". These volumes allow an application to create files that are immutable for a defined period of time (i.e. the files have a retention period and cannot be changed in any way until the retention period has expired.)
The software is called the Sun StorageTek Compliance Archiving Software. I had planned to write a blog entry about how to use it, but I just found this document that explains how it works very nicely.