[mythtvnz] New Hard Drive not performing well

[Steve V]

Hi,

I just added another hard drive to my Myth Backend box. I now have a 170Gb drive 
for the operating system and I also have 3 drives, a 500Gb, a 1Tb and a 2TB 
drive for storage.

The 2Tb drive is the new one. The 1 Tb and the 2Tb are both Western Digital 
Caviar Green types. All of the storage drives are formatted as XFS.

All storage drives are set up in the Storage groups so Myth automatically 
assigns recordings to a drive. It seems that all recordings are going to the new 
2Tb drive right now, I guess this is because it is only 8% used while the other 
2 drives are around 85% used.  The problem is that anything that is on the new 
drives reacts very slowly to skipping or jumping. I can push the skip button, 
the picture pauses and it can take 5 seconds for anything to happen, after 5 
seconds the picture pixilates for a second then the recording starts 30 seconds 
on. So skipping works but takes 5 seconds to happen.

If I view a recording that is on either of the other 2 drives I do not have the 
skipping delay or the pixelation.

I'd appreciate any ideas on what is going on or any suggestions on tools to test 
the hard drive performance.


Cheers

Steve