QBUS SCSI card...

From: Zane H. Healy <healyzh_at_aracnet.com>
Date: Mon Feb 24 22:02:00 2003

> > You're making me wish I could give this a try under VMS. I wonder where on
> > earth I've got my pair of RD54's stashed. I know where everything else is
> > that would be required to temporarily switch a PDP-11 over to a MicroVAX II.
> > It would make for some interesting testing, and I've been wanting to us a
> > MicroVAX II to practice my system tuning skills (improvements are more
> > noticable on a MVII).
>
> I'd be quite interested to know what you find. I'm not willing to
> discount inefficient drivers on the NetBSD side, but just the published
> transfer rates for the MFM disks, let alone seek times, suggest that on
> a decently configured network, local storage will be slower than NFS.

Unfortunatly this is something that will have to wait for me to actually
find the time to do it :^( I'm really curious as to how much of a
difference in performance it would be possible to obtain with VMS. With VMS
you're dealing with ODS2, DECnet and the Clustering software, on Unix you've
got ffs (or whatever the filesystem BSD is using), TCP/IP and NFS. On the
downside, Unix tends to beat VMS at disk IO, still we're talking more the
difference between a RQDX3/RD54 combo vs. a nice fast more modern server
with SCSI (or IDE) disks.

                        Zane
Received on Mon Feb 24 2003 - 22:02:00 GMT