Raid-1 SCSI drive speed issue

[Mike Tremaine]

> >Problem:
> >
> >Target 0 Negotiation Settings
> >        User: 320.000MB/s transfers (160.000MHz DT|IU|QAS, 16bit)
> >        Goal: 320.000MB/s transfers (160.000MHz DT|IU|QAS, 16bit)
> >        Curr: 320.000MB/s transfers (160.000MHz DT|IU|QAS, 16bit)
> >        Transmission Errors 0
> >        Channel A Target 0 Lun 0 Settings
> >                Commands Queued 134776253
> >                Commands Active 2
> >                Command Openings 30
> >                Max Tagged Openings 32
> >                Device Queue Frozen Count 0
> >Target 1 Negotiation Settings
> >        User: 320.000MB/s transfers (160.000MHz DT|IU|QAS, 16bit)
> >        Goal: 10.869MB/s transfers (10.869MHz)
> >        Curr: 10.869MB/s transfers (10.869MHz)
> >        Transmission Errors 235
> >        Channel A Target 1 Lun 0 Settings
> >                Commands Queued 129918824
> >                Commands Active 1
> >                Command Openings 31
> >                Max Tagged Openings 32
> >                Device Queue Frozen Count 0
> >
> I'm pretty sure the negotiated settings are cleared when you do the scsi 
> remove-single-device and renegotiated when you do the scsi 
> add-single-device.
> 
  This is what I assumed also, the onyl thing that makes me wonder about
it is the counters have not been reset. Basically all the data in Target
1 is exactly what was there before I did the remove-single-device and
pulled the old drive.

> Perhaps you have a cable/connector problem?

 That crossed my mind, but I really hope that is not it since it means
having to go on-site. ;).

-- 
Mike Tremaine