Re: G4s and error 519 - AN UPDATE

[Adrian Smith]

Back in November I started a thread on problems we were having 
getting G4s to backup over our 10Mb Ethernet network...

Just to update everyone, we have found that switching the clients to 
AppleTalk rather than TCP/IP has eliminated all the errors we were 
experiencing (As suggested by Brooks Peters in the thread "G4 
Client's OT Wiped Out by Backup via TCP/IP"). The backup is not as 
quite as fast (say 40 MB/min vs 50) but it does work.

Now if we could just nail the problem we are still having with the 
tape drive and 102 errors we would be all set...

Adrian

PS We have not tried any of the G4s with TCP/IP and OS9.1 yet. I 
would be interesting to know if 9.1 fixed the problems but as it 
ain't broke...

At 4:19 PM +1100 22/11/00, Adrian Smith wrote:
Hi all,
   We are having problems backing up G4s over the network. 
Basically, they get part way through the backup and then Retrospect 
looses the connection. The problem seems to be at the G4 end as once 
this has happened they have lost network connectivity until the next 
restart (sleep and waking seems to restore it as well). This seems 
to be the problem that was addressed by the "Ethernet Update 1.0" 
and our network does seem to come close to the type of network 
described in the Apple TIL on the subject. HOWEVER, installing the 
Ethernet Update doesn't fix the problem, although it may have made 
it a little better (the backup SEEMS to get a bit further).

So, does anyone know how complete a fix the Ethernet Update was? Are 
there reports of G4s still having network problems?

Does anyone have any suggestions for a workaround?

Any other suggestions as to the cause? We have had zero problems 
backing up an iMac, a beigeG3 and an LCIII but the three G4s (and my 
Powerbook (firewire) which we just tested) seem to fail almost every 
time...

Thanks
Adrian


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Re: Repost: miscompare problem

[Todd Williams]

Just to chime in . . . .

I *think* anything after 8.1 is unsupported on Umax machines.  We had 
a couple of S500  When we upgraded to 8.5/8.6  The ethernet cards 
stopped working.  It turns out that the ethernet cards were actually 
PC cards that Umax had hacked the drivers for.  They would not work 
under anything past 8.1.  (As I recall the drivers were actually 
invisible files).  The only reason I know this is because I ran the 
FCC numbers through the FCC database, found the original manufacture, 
call them and asked about mac drivers.  Needless to say they thought 
I was crazy.  They had NEVER made mac drivers for them.  It was UMAX 
buying a cheap card and making it work.

At the time though UMAX had a great product . . .

Ditch the combo card get a new 10/100 card and an adaptec 29**. 
You'll be much happier.


Dan:

I have experienced several network related problems when I upgrade an S-900
with that E100 card to anything past 8.1. I suspect that the E100 drivers
have problems with the Open Transport network changes that Apple made in
8.6, then 9.

I'm slowly trying to rid myself of all the S900's at our location because of
this. I've given up trying to get them to work with modern OS versions.

Also, in my experience, Retrospect has become much more sensitive to SCSI
errors since 4.2. I think I remember the Retrospect folks saying that this
is because it now better uses the speed associated with a Fast SCSI or LVD.
Apparently, the tradeoff for this speed is less fault tolerance.

Some of the Dantz folks on the list can explain it better.


on 2/15/01 8:48 AM, Dan Knight at [EMAIL PROTECTED] wrote:

  I posted this over the weekend and haven't had a single suggestion. Has
  nobody seen this problem before?

  I'm back to the list after a month off. I now work from home and have run
  into a problem with backup.

  Earlier this week I swapped components between my SuperMac S900 and
  SuperMac J700. Both machines have the same motherboard, although the J700
  has two less PCI slots on that motherboard.

  Both computers have Newer G3 daughter cards and Umax SuperMac E100 cards,
  which provide 10/100 ethernet and fast-wide SCSI.

  I use a VXA drive for backup. Everything was working flawlessly under Mac
  OS 9.0.4 and Retrospect 4.2 on the S900. I set the S900 up for one of my
  sons, moving the hard drive from it to the J700. Everything should have
  run exactly as before.

  I should be so lucky.

  Ever since then, I've been getting miscompare errors. The only two
  changes are the box and an upgrade to Mac OS 9.1 just before I moved all
  my files to my new titanium PowerBook.

  I have upgraded to Retrospect 4.3; this has not helped.

  I suspect either the E100 card or an incompatibility with Mac OS 9.1.
  Before I tear two computers apart to swap cards or do a system downgrade,
  I'd appreciate feedback from list members as to the more likely cause.

  Thanks!


  Dan Knight, publisher, Low End Mac  http://lowendmac.com/

  -- insert clever tagline here --



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==
Don Foy  Herald-Citizen
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Todd Williams   UCSD ECE Computing Support Group (858)-534-7821

If you ever stop learning . . . perhaps you're dead!!!


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miscompare problem solved

[Dan Knight]

Don Foy writes:

I have experienced several network related problems when I upgrade an S-900
with that E100 card to anything past 8.1. I suspect that the E100 drivers
have problems with the Open Transport network changes that Apple made in
8.6, then 9.

I hate not knowing where to begin with a problem, but the E100 card 
seemed to be the crux of the problem. I finally told my son to shut down 
my S900, pulled the E100 card, set him up with a better monitor, put the 
E100 in my SuperMac J700, hooked everything up, and launched Retrospect.

Zero problems. Whether the other E100 card was bad or needed some update 
-- well, the important thing is I'm running backup for the first time in 
over a week.

Thanks for all the hints!


Dan Knight, publisher, Low End Mac  http://lowendmac.com/

  Life is too short to use anything but a Mac." -- Roger Ebert



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