LinuxQuestions.org - RAID 1 Degraded Array

I have recently setup a RAID 1 Array, and have found that it is degraded/faulty not sure what this means exactly. What I want to know is how can I get it to be active and sync'ed. here are the details about the array.

cat /proc/mdstat

Code:

Personalities : [raid1]

read_ahead 1024 sectors

md0 : active raid1 scsi/host0/bus0/target0/lun0/part1[0]

      240832 blocks [2/1] [U_]



md1 : active raid1 scsi/host0/bus0/target0/lun0/part2[0]

      1951808 blocks [2/1] [U_]



md2 : active raid1 scsi/host0/bus0/target0/lun0/part3[0] scsi/host1/bus0/target0/lun0/part3[1]

      310375680 blocks [2/2] [UU]



unused devices: <none>

mdadm --query --detail /dev/md0

Code:

/dev/md0:

        Version : 00.90.00

  Creation Time : Sat Aug  5 07:27:41 2006

    Raid Level : raid1

    Array Size : 240832 (235.19 MiB 246.61 MB)

    Device Size : 240832 (235.19 MiB 246.61 MB)

  Raid Devices : 2

  Total Devices : 1

Preferred Minor : 0

    Persistence : Superblock is persistent



    Update Time : Fri Aug 18 19:22:57 2006

          State : active, degraded

 Active Devices : 1

Working Devices : 1

 Failed Devices : 0

  Spare Devices : 0



          UUID : b8aafa16:58eacb39:759f2cd2:f0f9bafe

        Events : 0.53



    Number  Major  Minor  RaidDevice State

      0      8        1        0      active sync  /dev/sda1

      1      0        0        1      faulty removed

Kernel: 2.4.27-2-386

I only noticed this because I keep getting an email once a day or so about it happening here is the email that is sent.

Code:

Subject: DegradedArray event on /dev/md1:debian



This is an automatically generated mail message from mdadm

running on debian



A DegradedArray event had been detected on md device /dev/md1.

I have been following this tutorial http://www200.pair.com/mecham/raid/raid1.html which has not helped much. Let me know if anymore information is needed.