If the server is Clustered then only TEMPDB can be on the local SSD

If it isn't then placing the DB on SSD could be an option.

And regular backups (every 5 min or less to SSD then copy to SAN) to SAN if reason for being on the SAN is DR/Data safety. A backup of a DB that size split into 4 files should only take 1-2 min to finish.