title: what does "mptbase: ioc0: RAID STATUS CHANGE for PhysDisk 1 id=8" mean?
body: <p>I received the following messages in <code>/var/log/message</code>:</p>
  
  <pre><code>Sep  6 04:23:30 localhost kernel: mptbase: ioc0: RAID STATUS CHANGE for PhysDisk 1 id=8
  Sep  6 04:23:30 localhost kernel: mptbase: ioc0:   SMART data received, ASC/ASCQ = 5dh/00h
  Sep  6 04:26:01 localhost kernel: mptbase: ioc0: RAID STATUS CHANGE for PhysDisk 1 id=8
  Sep  6 04:26:01 localhost kernel: mptbase: ioc0:   SMART data received, ASC/ASCQ = 5dh/05h
  </code></pre>
  
  <p>This message is repeated frequently, and it has been going on for two weeks. But the server seems ok, I haven't noticed any service failure.</p>
  
  <p>What does this messages mean? </p>