Kevin Sullivan wrote:

> On Tue, 16 Mar 1999 10:05:45 MST, "Michael L. Hitch" says
>
> >  The 5000/240 uses the IOASIC SCSI normally, and the problem appears to
> >only be in the TurboChannel-option SCSI that the 5000/200 has.  It's
> >possibl that the problem may show up on the TC-option card on the other
> >systems, but not too many people are using the TC-option card when they
> >have the IOASIC SCSI.  [The IOASIC SCSI will use DMA directly to memory,
> >while all the TC-option SCSI cards have to copy data to/from the on-card
> >memory buffer.]
> 
> This machine has 2 additional TC SCSI cards.  So you're saying I should be
> worried?

The NFS server for our FTP mirror is a 5000/240 with an extra TC SCSI
card and a total of 11 RZ28's, and it's been rock solid - first running
1.3.1 and now 1.3.3.  With a machine with that many disks, I needed to
tweek some kernel options.  I'm currently running with:

	options         "NKMEMCLUSTERS=3072"    # 4K pages in kernel malloc pool
	options         "NMBCLUSTERS=6144"      # extra mbuf clusters

Simon.