ATA Woes.

[Jon Simola]

On 7/19/05, Tony Byrne <freebsd at byrnehq.com> wrote:

> Jul 19 13:01:48 roo kernel: ad0: FAILURE - READ_DMA status=51<READY,DSC,ERROR> error=40<UNCORRECTABLE> LBA=288810495
> Jul 19 13:01:59 roo kernel: ad0: FAILURE - READ_DMA status=51<READY,DSC,ERROR> error=1<ILLEGAL_LENGTH> LBA=288810495
> Jul 19 13:02:05 roo kernel: ad0: FAILURE - READ_DMA status=51<READY,DSC,ERROR> error=40<UNCORRECTABLE> LBA=288810495
> Jul 19 13:02:16 roo kernel: ad0: FAILURE - READ_DMA status=51<READY,DSC,ERROR> error=40<UNCORRECTABLE> LBA=288810495
> Jul 19 13:04:36 roo last message repeated 4 times

> I'm totally confused. I don't know enough about SMART to know whether
> I'm looking at real failing drives or some bug exposed by the
> interaction between drive firmware, hd controller and FreeBSD.

What I've recently learned the hard way is that desktop drives have no
place in a server. I've now failed 4 of 10 SATA drives (Maxtor and WD)
in 1U rackmounts, and am moving on to trying the WD Raptor SATA drives
(which claim to be low-end server).

-- 
Jon Simola
Systems Administrator
ABC Communications