FAILURE - READ_DMA timed out

[Лукьяненко Александр]

Hello, freebsd-questions at freebsd.org,


I have server from Advantech company:
System unit – ACP-1120
MainBoard - PCA-6186 Rev.B1;
RAID - Advantech Raid for 1U Rev2.2 (hardware raid_1, with IDE interface (PATA), no drivers need);
HDD0 - Seagate Barracuda 7200 120G (ST3120814A);
HDD1 - Seagate Barracuda 7200 120G (ST3120814A);
Other isn’t interesting.

Server runs under FreeBSD 6.1;

Problem:
Some times OS don’t start. It fails at start up when it tries to read data from RAID. At this time IDE0 LED turns blue NOT blinking colour.
---log start
ad0 114473MB <Advantech Raid for 1U Rev2.2> at ata0 - master UDMA100
ad0: FAILURE - READ_DMA timed out LBA=2344441645
ad0: FAILURE - READ_DMA timed out LBA=2344441631
ad0: FAILURE - READ_DMA timed out LBA=2344441644
ad0: FAILURE - READ_DMA timed out LBA=2344441647
ad0: FAILURE - READ_DMA timed out LBA=2344441585
---log end

I reboot system 10 times. In 4 cases – system don’t start, in 6 cases system start successfully.
I check hard disk drivers its looks good.

How Can I solve this problem?


-- 
luka at vts.dmls.com.ua