Messages in this thread | | | Date | Wed, 22 Oct 2003 17:36:19 +0100 | From | Alex Finch <> | Subject | Re: Single P4, many IDE PCI cards == trouble?? |
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For what it's worth, here is my experience. Hope it helps you, and anyone else searching for solutions to the problems I have encountered...
Our New Server ==============
(+ Lessons learnt along the way) ++++++++++++++++++++++++++++++
Motherboard: Asus P4S8X-X
CPU: Intel Pentium 4 2400MHz
Memory: 2 x 512Mb PC2700 +was supposed to be 3x512Mb but the motherboard can't handle 3xPC2700 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Network: 3Com 3c905C-TX/TX-M [Tornado]
Do NOT use the onboard LAN - performance is diabolical! ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Additional controller cards:
2xPromise Ultra133 Tx2 PCI-IDE cards 1xPromise Ultra66 PCI-IDE card
Do note use 3 identical Promise IDE cards, either system will not +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ boot or there will be i/o errors! ++++++++++++++++++++++++++++
Disks ===== (In addition to system disk)
10 x Maxtor 6Y060L0 60Gb attached to onboard ide and Promise Ultra133 cards 4 x Maxtor 4A250J0 240Gb disk attached to Promise Ultra66 cards
Software:
RedHat 9 kernel 2.4.20
Boot parameters modified as follows:
Edit /boot/grub/menu.lst and append ide2=noautotune ide3=noautotune ide4=noutotune ide5=noautotune ide6=noautotune ide7=noautotune to the line kernel /boot/vmlinuz-2.4.20-8 ro root=LABEL=/
this avoids errors of the type: ++++++++++++++++++++++++++++
hdh: dma_intr: bad DMA status (dma_stat=75)
when accessing the disks on the Promise cards Thereafter formatted disks/created raid arrays/started raid/made filesystem no problem. Four 240Gb disks formatted as one big disk via raid0! (/dev/md8 Size=989GB) Tape drive: Spectra Logic 2000 (a.k.a. TreeFrog) attached via Adaptec AIC-7892A SCSI card Use mtx version 1.2.17rel to drive the robot, more recent versions cause problems (author informed).
Alex Finch, Research Fellow, Physics Department, Lancaster University.
NB ( I am not subscribed to the list so contact me directly for more information)
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