View Single Post
  #7   (View Single Post)  
Old 8th February 2010
phoenix's Avatar
phoenix phoenix is offline
Risen from the ashes
 
Join Date: May 2008
Posts: 696
Default

Contrary to the vast majority of online reports ... one can use the wdidle3 utility to "disable" this horrible idle timeout setting.

While one cannot truly disable it, one can set the timeout to 62 minutes, effectively disabling it. Or select a value that reflects your workload.

I've "disabled" this on the 7 drives that have been put into our storage server. The resilver throughput for that 7th drive has jumped from an average of 7 MBps to an average of 40 MBps!!

Checking the Load_Cycle_Count via smartctl now shows the numbers as not moving. Previously, they would go up quite quickly (1 drive has 50,000 after less than 2 months of use). Even using a twiddle script running every 5 seconds wouldn't completely stop this from increasing.

Unfortunately, the wdtler utility does not work on these drives. But it's still an improvement. So maybe they aren't totally worthless drives.
__________________
Freddie

Help for FreeBSD: Handbook, FAQ, man pages, mailing lists.
Reply With Quote