3ware Smart Test

It is not straight forward how to check out the health of the drives behind a 3ware raid controller, but here is a nice script that I wrote to check the health of all 8 behind a 9xxx:

#!/bin/bash
for DRIVE in `seq 0 7`
do
smartctl --test short --device=3ware,$DRIVE /dev/twa0  >/dev/null 2>&1
sleep 2m
HOURS=`smartctl -a --device=3ware,$DRIVE /dev/twa0  | grep "Power_On_Hours" | tr " " "\n" | tail -n 1`
if [ "$HOURS" == "" ]; then
        HOURS=`smartctl -a --device=3ware,$DRIVE /dev/twa0  | grep "# 1" | cut -c 64-75 | tr -d [:space:]`
fi
SERIALNUMBER=`smartctl -a --device=3ware,$DRIVE /dev/twa0  | grep "Serial Number" | head -n 1 | awk '{print $3}'`
ERRORCOUNT=`smartctl -a --device=3ware,$DRIVE /dev/twa0  | grep "Error" | grep "occurred" | head -n 1 | cut -f 2 -d " "`
ERRORTIME=`smartctl -a --device=3ware,$DRIVE /dev/twa0  | grep "Error" | grep "occurred" | head -n 1 | cut -f 8 -d " "`
if [ "$ERRORCOUNT" = "" ] ; then
ERRORCOUNT=0
ERRORTIME=0
fi
REALLOCATEDSECTORS=`smartctl -a --device=3ware,$DRIVE /dev/twa0  | grep "Reallocated_Sector" | tr " " "\n" | tail -n 1`
PENDINGSECTORS=`smartctl -a --device=3ware,$DRIVE /dev/twa0  | grep "Current_Pending_Sector" |  tr " " "\n" | tail -n 1`
echo -e "\033[1;42;37mTest Complete\033[0m"
echo "Serial No: $SERIALNUMBER"
echo "`date +%D` $DRIVE:"
echo "Hours: $HOURS "
echo -n "SMART Errors: $ERRORCOUNT"
if [ $ERRORCOUNT -gt 0 ]; then
let WHENITHAPPEND=$HOURS-$ERRORTIME
echo " (last $WHENITHAPPEND hours ago)"
else
echo
fi
echo "Reallocated / Pending: $REALLOCATEDSECTORS / $PENDINGSECTORS"
echo ""
done