The equivalent of TRIM is supported as SCSI unmap in Solaris 11.1 and ZFS will recognize that blocks are reclaimed.
We have some challenges due to 15804599, which means SSD performance is severely impacted by SCSI unmap.
The SCSI unmap is currently disabled due to this problem starting in S11.1 SRU 3.4.
Thanks for the quick reply. If I'm understanding correctly, the SCSI unmap command was implemented in last November's Solaris 11.1 release but has since been disabled due to performance problems. I'm running the original November release with no updates so can I assume that SCSI unmap is enabled on my system? If so, do I run any risk of data corruption by staying with my current version? I'm currently running Solaris 11.1 from a SATA SSD.