I had all kinds of problems with Adaptec SCSI controllers (both the
2940 and the 3-channel UW RAID card) on the Tyan board with linux
and NT. Adaptec says it's the motherboard. I'm inclined to agree
since switching to a Mylex 952 showed the same symptoms (same as yours).
Chris
> From [EMAIL PROTECTED] Tue Jan 5 10:09:00 1999
> Date: Mon, 4 Jan 1999 14:08:57 -0500
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> Hello,
>
> I am having some stability problems with the following LINUX system
> and would really appreciate some advice.
> Note: our latest stress-tests seem to show that things become (more) stable
> if instead of 64M Cache Non-ECC we use only 16M (1 SIMM instead of 4 -
> things become unstable with 2, 3, or 4 of them and look stable just with 1
> SIMM only)
>
> System Config:
>
> Tyan 1832DL with
> Dual 400MHz Intel Pentium II processors
> 256M of Tyan recommended memory (pricey stuff)
>
> Dual channel SmartRAID-IV 3334UW controller connect to:
> 64M Cache Non-ECC (cheaper standard memory)
> External disk storage with 6 4.3 Gig Western Digital 4360's External
> storage unit attached to single channel of 3334UW
> Channel 1 is connected to the 6, External disks divided into two 12
> Gig stripe sets.
> Channel 0 is left open for future expansion.
>
> Adaptec AHA-2940 UW connected to:
> 2 internal 4.3 Gig Western Digital 4360's on scsi II connector (System
> disk, /usr and /var)
> Sony Tape Unit & CDRom on scsi I connector
>
> Basic Trident PCI, VGA card
> 3Com 3c509 NIC (I couldn't keep it running for more than an hour with a
> 3c905)
>
> RedHat Version 5.2 (2.0.35 Kernel)
>
> I put the system together by loading the LINUX system on the two
> internal disks attached to the Adpatec controller. I configured RedHat
> Linux to use the eata-dma driver to recognise the DPT RAID card. I
> rebuilt the kernal to use both cpu's. I created two striped disk sets
> of three drives each in the external enclosure using the the DOS based
> Storage Manager. I created 2, 12 gig ext2 file systems on the RAID
> units.
>
> It all works at least for a few days at a time.
>
> Symptoms:
> - When the system crashes, It trashes the file systems attached to the
> 3334UW RAID controller and requires a tape restore.
>
> - About once a week the system hangs and I see no messages. Instantly
> freezes the screen.
>
>
> Have I put together a marginally stable group of hardware here or is
> there some secret I have missed about all the configuration issues of
> my selected hardware components? I would love some insight into this
> since we are about to bite the bullet and switch over to a Solaris
> operating system in hopes of stabilizing on our hardware. We love
> LINUX and do not want to switch but I am at my wits end.
>
> Thanks!
>
> Otis
>
>
--
Christopher Mauritz
[EMAIL PROTECTED]
