This should be compatible with any controller supported by tw_cli.

#!/bin/bash

TW_CLI="/YOUR_PATH_TO/tw_cli" # change this for your environment
RAID_CHECK_CMD="$TW_CLI /c0 show allunitstatus"
RAID_FULLSTATUS_CMD="$TW_CLI /c0 show all"
EMAIL_TO="YOUR_EMAIL@DDRESS" # change this for your environment
EMAIL_FROM="FROM_EMAIL@DDRESS" # change this for your environment
SENDMAIL="/usr/sbin/sendmail -f $EMAIL_FROM"
TOUCH="/bin/touch"
SEMAPHORE="/root/.raidstatus_mailed" # change this if you like
HOSTNAME=$(hostname -f) # THIS IS NOT CROSS-PLATFORM SAFE - should be OK for any linux, otherwise remove the -f
INTERVAL=600

while : ; do
 if $RAID_CHECK_CMD |grep -q 'Not Optimal Units = [^0]'; then # Scream OH SHIT and run.
  # Been an hour since I emailed last?
  if [ ! \( -r $SEMAPHORE \) -o \( $(($(date +%s) - $(date +%s -r $SEMAPHORE))) -gt 3600 \) ]; then
   FULLSTATUS="$($RAID_FULLSTATUS_CMD)"
   $SENDMAIL $EMAIL_TO <<EOM
From: "3ware 9650SE on $HOSTNAME" <$EMAIL_FROM>
To: <$EMAIL_TO>
Subject: RAID problem detected on $HOSTNAME

$0 has detected a problem

Full controller status:

$FULLSTATUS

Please resolve this ASAP.
EOM
   touch $SEMAPHORE
  fi
 fi
 sleep $INTERVAL
done