I would LOVE to bring an old 68k mac onto hecnet.
Sampsa
On 3 Oct 2009, at 01:28, Jason Stevens wrote:
I've been looking for a while as well, could you let me know if you have any success?
I missed my chance on ebay a couple of weeks ago :(
Kari Uusim ki wrote:
About the comparation between FDDI and RD* disks. Theoretically FDDI should be faster, because it is capable of delivering about 12MB/s, compared to the RD* disks which might be able to deliver about 1MB/s.
But Qbus can't deliver the full speed of FDDI, can it?
Peace... Sridhar
Kari Uusim ki wrote:
The Alpha should be faster if it doesn't happen to be a say DEC3000-300L. :-)
I assume the DEFQA could be installed into a MicroVAX II, but I've never seen such a setup.
Every DEFQA I've ever seen has had S-box handles.
Peace... Sridhar
Sampsa Laine wrote:
Is it possible to run a cluster over both ethernet and FDDI?
Basically, I'd like to connect Machine A -> B using ethernet and B -> C using FDDI - is this possible?
Yes, it works just fine. The only tricky bit comes when only machine C is up and you want to clusterboot machine A.
My configurations usually involve some combination of ethernet and DSSI.
Peace... Sridhar
Zane H. Healy wrote:
On Tue, 29 Sep 2009, Kari Uusim ki wrote:
first when you do a disk shadow copy and second when you boot a satellite over the Ethernet.
This is where I've always wanted to play with FDDI. I'd love to boot a
MicroVAX II off of either a high end VAX or an Alpha via a FDDI link. I'm
curious as to which would be faster. Running the MicroVAX II off of native
disks, or over the FDDI link.
Depends on what disks and controller you have on the MVII of course...
If it's an RQDX3, then just about anything else will be faster. :-)
Johnny
--
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: bqt at softjar.se || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol
Yes, indeed, the Qbus is definately the bottleneck here. As also if you do use SCSI disks say through a KFQSA and HSD* controller.
The KZQSA is very limited, IIRC. I'm not aware of any support for SCSI disks (except for CD drives) on it.
Kari
Zane H. Healy wrote:
That's part of what makes the idea interesting. Of course I suspect you'd
saturate your Q-Bus backplane with it. IIRC, the backplane can handle
roughly 3MB/s.
I suspect such a solution might be faster than a MicroVAX II with SCSI
drives. I've not tested the theory as while PCI FDDI cards are cheap
enough, the Q-Bus ones were not the last time I checked.
Zane
On Tue, 29 Sep 2009, Kari Uusim ki wrote:
About the comparation between FDDI and RD* disks. Theoretically FDDI should be faster, because it is capable of delivering about 12MB/s, compared to the RD* disks which might be able to deliver about 1MB/s.
Kari
Zane H. Healy wrote:
On Tue, 29 Sep 2009, Kari Uusim ki wrote:
first when you do a disk shadow copy and second when you boot a satellite over the Ethernet.
This is where I've always wanted to play with FDDI. I'd love to boot a
MicroVAX II off of either a high end VAX or an Alpha via a FDDI link. I'm
curious as to which would be faster. Running the MicroVAX II off of native
disks, or over the FDDI link.
Zane
That's part of what makes the idea interesting. Of course I suspect you'd
saturate your Q-Bus backplane with it. IIRC, the backplane can handle
roughly 3MB/s.
I suspect such a solution might be faster than a MicroVAX II with SCSI
drives. I've not tested the theory as while PCI FDDI cards are cheap
enough, the Q-Bus ones were not the last time I checked.
Zane
On Tue, 29 Sep 2009, Kari Uusim ki wrote:
About the comparation between FDDI and RD* disks. Theoretically FDDI should be faster, because it is capable of delivering about 12MB/s, compared to the RD* disks which might be able to deliver about 1MB/s.
Kari
Zane H. Healy wrote:
On Tue, 29 Sep 2009, Kari Uusim ki wrote:
first when you do a disk shadow copy and second when you boot a satellite over the Ethernet.
This is where I've always wanted to play with FDDI. I'd love to boot a
MicroVAX II off of either a high end VAX or an Alpha via a FDDI link. I'm
curious as to which would be faster. Running the MicroVAX II off of native
disks, or over the FDDI link.
Zane
