Stable many-port SATA controller recommendations

[Ted Mittelstaedt]

> -----Original Message-----
> From: owner-freebsd-questions at freebsd.org
> [mailto:owner-freebsd-questions at freebsd.org]On Behalf Of Peter Schuller
> Sent: Thursday, May 10, 2007 2:25 PM
> To: Peter Schuller; freebsd-questions at freebsd.org
> Subject: Re: Stable many-port SATA controller recommendations
> 
> 
> > Promise are supposed to be one of the better makes when it comes to
> > documentation and open source support, 
> 
> Yes, that was my impression prior to purchasing the two TX4:s.
> 
> > what problems are you seeing?
> 
> I can easily (dd if=/dev/zero of=testfile bs=$((1024*1024)) count=500)
> trigger within a few seconds:
> 
> WARNING - WRITE_DMA48 UDMA ICRC error (retrying request) LBA=<a number>

please post dmesg!

Be aware that some disk drives do the wrong thing.  Western Digital desktop
disks, for example, don't simply remap a sector when they find a bad one,
they sit there scrubbing forever trying to reread the data.  WD calls this
a "feature" and their server-quality WD disks that cost more don't do this.
It makes use of these disks impossible in a raid array.  Seagates and
Maxtor desktop drives to my knowledge don't do this.

Ted