OS-2000 SATA hotplug should have nice things

@@ -142,5 +142,13 @@
 * could go to 999999, but for now stick with 5 digits to match the existing
 * default of 30000.  This is mostly being conservative, so we can bump higher
 * if necessary.
 *
 set pidmax=99999
+
+*
+* OS-2000 -- The traditional (and essentially entirely brain dead)
+* cfgadm(1M)-centric model of hotpluggin' appears to be basically unnecessary.
+* This tunable enables the system to create device nodes for newly inserted
+* devices automatically.  See: usr/src/uts/common/io/sata/impl/sata.c:97
+*
+set sata:sata_auto_online=1