yOn Thu, 10 Oct 2013, Brian Hechinger wrote:
On Thu, Oct 10, 2013 at 01:13:26PM -0400, Cory Smelosky wrote:
On Thu, 10 Oct 2013, Dave McGuire wrote:
On 10/10/2013 01:05 PM, Brian Hechinger wrote:
On Thu, Oct 10, 2013 at 01:01:06PM -0400, Cory Smelosky wrote:
On Thu, 10 Oct 2013, Brian Hechinger wrote:
Going and rescuing all that stuff is something I really want to do one
day. Not anytime soon though. :(
Save me one! ;)
If that stuff is indeed still in that barn, you can have most of it. :)
If memory serves, a good bit of that is mine. ;)
-Dave
I'll take what isn't yours. ;)
Nah, you can have Dave's stuff too. :)
I don't think Dave'll like that too much. ;)
-brian
--
Cory Smelosky
http://gewt.net Personal stuff
http://gimme-sympathy.org Projects
On 10/10/2013 01:16 PM, Hans Vlems wrote:
Fddi was the answer for production plants that required 100% uptime
Only once did Fddi let me down and made me go back to work at 3:30 am,
the worst time to wake up. One of the boards in a gs/fddi failed,
isolating two plants.
I did manage to explode a power supply in a gs. Made one hell of bang,
fortunately that part was redundant so the net stayed up.
Yuck!
Compared to fast ethernet, I prefer fddi.
Same here.
Too expensive for private or hobbyist use though.
Hardly. You just need the right connections. I was nearly 100% FDDI
on my home network in the mid-1990s...didn't take all that much money.
I didn't have much! ;)
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
On 10 Oct 2013, at 19:12, Brian Hechinger <wonko at 4amlunch.net> wrote:
On Thu, Oct 10, 2013 at 06:33:15PM +0200, Sampsa Laine wrote:
Sounds like a business opportunity, basically build an enclosure, get 5-6 consumer SSDs, RAID6 them, expose a SCSI/SAS/eSATA interface to the host. If one of the drives breaks/runs out of write cycles, the box indicates the slot and we provide a new SSD for the slot.
FreeBSD can do this easily enough.
In most cases (like my 4000/90, for example) that's way overkill. I just
want to be able to plug something in that would replace the internal
disks.
If I were doing this. I still think my 4000/90 is going to get hooked
up to a little MSA of some sort.
I was more thinking about selling this to "enterprise" users, not hobbyists :)
The device would be packaged as a black box with no configuration etc needed - it just looks like a SCSI drive to the bus.
It could provide more space, redundancy and speed for lower cost if built right..
Sampsa
No it is one frame, cannot be split. There is a half sized gs but it has its boards mounted horizontally
Van: Brian Hechinger
Verzonden: donderdag 10 oktober 2013 17:25
Aan: hecnet at Update.UU.SE
Beantwoorden: hecnet at Update.UU.SE
Onderwerp: Re: [HECnet] FDDI advice
On Thu, Oct 10, 2013 at 03:19:53PM +0000, Paul_Koning at Dell.com wrote:
>
>> I think this is the one I had. Big modular thing. Maybe (and going by
>> really fuzzy memory here) 8U high?
>
> I was going to say "that sounds right" based on my memory of seeing one gathering dust around here. But the picture here: http://www.global-itcorp.com/products/digital-dec/networking/gigaswitch/ shows a much taller enclosure, half line card space and half power supply. Each section does look like 8U or so.
Hmmm. I wonder if those can be separated. I wonder if that also means
mine never would have worked. I don't remember having the bottom half.
That was also 10 years ago, so who knows, maybe I did have the whole
thing. :)
> Some searching turns up refurbished Gigaswitch modules. Some are pretty cheap, but it looks like those are ATM ones, the FDDI ones I see quoted are more expensive. Perhaps because FDDI was fairly successful at least for a short time, while ATM (as a LAN) was an utter failure.
The *only* thing I even needed it to do was bridge FDDI/FastEthernet so
it just ended up not being worth the effort.
It's not a small switch. :)
-brian
On Thu, Oct 10, 2013 at 01:13:26PM -0400, Cory Smelosky wrote:
On Thu, 10 Oct 2013, Dave McGuire wrote:
On 10/10/2013 01:05 PM, Brian Hechinger wrote:
On Thu, Oct 10, 2013 at 01:01:06PM -0400, Cory Smelosky wrote:
On Thu, 10 Oct 2013, Brian Hechinger wrote:
Going and rescuing all that stuff is something I really want to do one
day. Not anytime soon though. :(
Save me one! ;)
If that stuff is indeed still in that barn, you can have most of it. :)
If memory serves, a good bit of that is mine. ;)
-Dave
I'll take what isn't yours. ;)
Nah, you can have Dave's stuff too. :)
-brian
Fddi was the answer for production plants that required 100% uptime
Only once did Fddi let me down and made me go back to work at 3:30 am, the worst time to wake up. One of the boards in a gs/fddi failed, isolating two plants.
I did manage to explode a power supply in a gs. Made one hell of bang, fortunately that part was redundant so the net stayed up. Compared to fast ethernet, I prefer fddi. Too expensive for private or hobbyist use though.
Van: Paul_Koning at Dell.com
Verzonden: donderdag 10 oktober 2013 17:20
Aan: hecnet at Update.UU.SE
Beantwoorden: hecnet at Update.UU.SE
Onderwerp: Re: [HECnet] FDDI advice
On Oct 10, 2013, at 10:35 AM, Brian Hechinger <wonko at 4amlunch.net<mailto:wonko at 4amlunch.net>> wrote:
On Thu, Oct 10, 2013 at 02:32:26PM +0000, Paul_Koning at Dell.com<mailto:Paul_Koning at Dell.com> wrote:
...
Then there is the Gigaswitch, a large modular chassis with lots of line cards, some FDDI, some Ethernet, possibly some with other stuff I don't remember.
I think this is the one I had. Big modular thing. Maybe (and going by
really fuzzy memory here) 8U high?
I was going to say "that sounds right" based on my memory of seeing one gathering dust around here. But the picture here: http://www.global-itcorp.com/products/digital-dec/networking/gigaswitch/ shows a much taller enclosure, half line card space and half power supply. Each section does look like 8U or so.
Some searching turns up refurbished Gigaswitch modules. Some are pretty cheap, but it looks like those are ATM ones, the FDDI ones I see quoted are more expensive. Perhaps because FDDI was fairly successful at least for a short time, while ATM (as a LAN) was an utter failure.
paul
On Thu, 10 Oct 2013, Dave McGuire wrote:
On 10/10/2013 12:57 PM, Cory Smelosky wrote:
On Thu, 10 Oct 2013, Dave McGuire wrote:
On 10/10/2013 03:04 PM, Peter Lothberg wrote:
FDDI/CDDI is a dual ring token ring bus, with 4470 MTU byte packets,
it has 802.-- frames. DEC had a mode where you turned the token off
and used it for ptp full duplex.
I didn't know about the ptp thing. That's nifty.
A cisco FDDI-PA can talk both in a 7500 or old 7200 (the VXR don't
support the FDDI cards but the VIP does ).
About that, Peter...is there ANY way to get a FDDI PAM to run in a
7206VXR? Or will it just plain not work, ever?
I thought PAs were compatible across all chassis? Maybe in a VXR with
an STD NPE?
No, not all PAs are supported in all chassis. I think that was
Cisco's way of forcing premature obsolecense on some things.
You know what I think about that. ;)
Time to throw out Cisco specs and make it work anyway!
I need EEPROM debugging tools.
-Dave
--
Cory Smelosky
http://gewt.net Personal stuff
http://gimme-sympathy.org Projects
Hello!
I was always told that a 1RU shape was about the size of a pizza box.
Since pizza and I are not on speaking terms I simply took the
individual's words for factual information until told otherwise.
-----
Gregg C Levine gregg.drwho8 at gmail.com
"This signature fought the Time Wars, time and again."
On Thu, Oct 10, 2013 at 1:12 PM, Cory Smelosky <b4 at gewt.net> wrote:
On Thu, 10 Oct 2013, Hans Vlems wrote:
A hu is two inches, right?
It's actually some uneven number that's around 1.5.
Van: Brian Hechinger
Verzonden: donderdag 10 oktober 2013 16:35
Aan: hecnet at Update.UU.SE
Beantwoorden: hecnet at Update.UU.SE
Onderwerp: Re: [HECnet] FDDI advice
On Thu, Oct 10, 2013 at 02:32:26PM +0000, Paul_Koning at Dell.com wrote:
On Oct 10, 2013, at 8:44 AM, Brian Hechinger <wonko at 4amlunch.net>
wrote:
On Thu, Oct 10, 2013 at 02:36:04PM +0200, Peter Lothberg wrote:
...
For example cisco/cabletron/crecendo had ethnernet switches with a
FDDI uplink, that you could use.
DEC made one as well, it was that large modular thingie. I used to
have
one. Never got it powered on as it was enormous.
The original one is the DECbridge 500, a 3U rack mounted device, 3 or 4
cards, 3 Ethernets (10 Mb/s) to FDDI. See the DTJ
issue I mentioned in my previous note.
The other two: the DECbridge 900, which plugged into the 900 series
modular enclosure. It's about the side of a 400 page
hardcover book, FDDI to 6 Ethernet ports, 60,000 packets per second using
a MC68040 at 25 MHz. I'm still proud of that. (I wrote
the "fast path" packet forwarding firmware.)
Neat!
Then there is the Gigaswitch, a large modular chassis with lots of line
cards, some FDDI, some Ethernet, possibly some with
other stuff I don't remember.
I think this is the one I had. Big modular thing. Maybe (and going by
really fuzzy memory here) 8U high?
-brian
--
Cory Smelosky
http://gewt.net Personal stuff
http://gimme-sympathy.org Projects
On 10/10/2013 01:12 PM, Cory Smelosky wrote:
A hu is two inches, right?
It's actually some uneven number that's around 1.5.
1.75".
--
Dave McGuire, AK4HZ
New Kensington, PA
On Thu, 10 Oct 2013, Dave McGuire wrote:
On 10/10/2013 01:05 PM, Brian Hechinger wrote:
On Thu, Oct 10, 2013 at 01:01:06PM -0400, Cory Smelosky wrote:
On Thu, 10 Oct 2013, Brian Hechinger wrote:
Going and rescuing all that stuff is something I really want to do one
day. Not anytime soon though. :(
Save me one! ;)
If that stuff is indeed still in that barn, you can have most of it. :)
If memory serves, a good bit of that is mine. ;)
-Dave
I'll take what isn't yours. ;)
--
Cory Smelosky
http://gewt.net Personal stuff
http://gimme-sympathy.org Projects
