symmetric access SCSI
sym* at scsibus?
sym driver attaches to SCSI logical
units that support symmetric access, i.e. all paths to the device are as
good as each other. Each path attached to by
presented to mpath(4) which uses it as a backend to the logical unit
attached to its own
ioctl(2), intro(4), mpath(4), scsi(4)
sym driver first appeared in
David Gwynne <email@example.com>.