Re: G4s and error 519 - AN UPDATE

2001-02-22 Thread matt barkdull

Here's an oddity.  I used to get a lot of 519 errors when I had DAT 
tape changers, but since switching to DLT I hardly have any problems 
and the problems I do have are directly related to the end users 
machine.

I ran DLT on a mixed 10BaseT with Hubs and switches for about 6 
months before I moved to a new building and have 10/100 switched 
(Cisco 5500's) network.  All of the machines I back up now are 
100BaseT full Duplex.  The Mac I was doing the backups on is a 
9600/G4-450.   The machine I am currently doing the backups on is a 
7600/G3-250.   I built a cable to connect the external DLT drive to 
the internal SCSI bus. because the internal bus is SCSI-2 Fast 
(10MB/sec) while the external connector is only SCSI-2 (5MB/Sec).

The speed difference between the two machines only dropped 2-3MB/min 
on average (averaging about 100MB/min).   The 7600 is a good 
combination.  Low volume Filemaker Server during the day, Retrospect 
backups at night.


One of the previous messages indicated the problem occuring on a 10T
network, otherwise I'd suspect the (presumably OT) problem might be getting
exposed by the higher throughput now that the G3 backup machine is on 100T,
as the G4 has always been.  Can anyone else confirm seeing the problem on a
10T only network?

Absolutley - we see it on a 10T unswitched network that can be as 
slow as...insert your favourite cliche here... that said it does 
seem to fail more often when there is less overall network traffic 
(ie the middle of the night) and the throughput is higher.  No 519s 
using AppleTalk (and I have checked and all the G4s have different 
node numbers so that is not the problem in our case)

Our backup machine is 7300/180 with an AdvanSys UltraWide SCSI card 
to a Sony DDS-4 drive.

Adrian Smith



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Re: G4s and error 519 - AN UPDATE

2001-02-20 Thread David Oberst

 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).

 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.

A timely thread!  I just today moved our DAT drive (HP SureStore DDS-3
external) from one machine to another, and copied all the Retrospect stuff
to make it the new machine.  I've immediately got this 519 error backing up
my own G4.

The old Retro backup machine was a beige G3-266 desktop, motherboard 10T
Ethernet, running 9.0.4.  The new machine is a beige G3-300 desktop, Asante
10/100 card, 9.0.4, and using a Miles Bluenote SCSI card instead of the
motherboard SCSI port.  My G4 machine is a 400Mhz "Yosemite" (AGP graphics)
version.  I haven't been having problems with it until the move.

One of the previous messages indicated the problem occuring on a 10T
network, otherwise I'd suspect the (presumably OT) problem might be getting
exposed by the higher throughput now that the G3 backup machine is on 100T,
as the G4 has always been.  Can anyone else confirm seeing the problem on a
10T only network?

Our other two G4 machines are the older 400Mhz "Yikes" motherboards (PCI
Graphics) from the original introduction, and so far I haven't seen 519
errors from them.  We just got two new 533Mhz G4s, with 9.1, and I'll see if
they have a problem, or if 9.1 makes the problem go away on the AGP G4, and
post the results here.
-- 

 David Oberst/NWT Bureau of Statistics/Yellowknife, NWT, Canada
 [EMAIL PROTECTED][Explore Canada's Arctic]




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Re: G4s and error 519 - update of the update

2001-02-20 Thread Nicholas Froome


  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.



A timely thread!  I just today moved our DAT drive (HP SureStore DDS-3
external) from one machine to another, and copied all the Retrospect stuff
to make it the new machine.  I've immediately got this 519 error backing up
my own G4.

We have 519's like a rash when backing up over a mixed 10/100 network using 3Com 
SuperStack 10/100 autoswitching hubs. Backup server is a beige G3 266 tower with a 
DDS-2 DAT drive.

519's are the order of the day with the one G4 machione. It has work files on an 
external 12 Gb FireWire drive and I think we've only once had an error-free backup. 
Changing to AppleTalk did not help in any way.

Some days most machines (20+) give a 519 which makes me think network or backup server.

I am going to test a Cisco Catalyst Switch (with Spanning Tree turned off) and see 
what happens.



Regards


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Re: G4s and error 519 - update of the update

2001-02-20 Thread Pam Lefkowitz

On 2/20/2001 6:45 AM, "Nicholas Froome" wrote:

 
 We have 519's like a rash when backing up over a mixed 10/100 network using
 3Com SuperStack 10/100 autoswitching hubs. Backup server is a beige G3 266
 tower with a DDS-2 DAT drive.

Take a look at the autosensing on the Macs. There is an update on the Apple
site that forces either 10 or 100 and doesn't allow the autosensing to
happen. This has cleared up many network issues.

Pam



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Re: G4s and error 519 - AN UPDATE

2001-02-16 Thread 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: G4s and error 519

2000-11-29 Thread Mark


On Tue, 28 Nov 2000, David Ross wrote:

 If you look at how ethernet works, most of time anything you do will
 mask errors. EtherNet has error recovery built in. So an undemanding
 transfer, such as a Finder copy, will tend to get through, errors or
 not. It's those programs that really hammer the network, like a backup
 program trying to keep a tape at speed, that tend to fail.

Here's something to consider as a *possible* cause for 519 (and other
Ethernet) errors:  We have several new G3 and G4 servers that connect
directly to high-end switches via six-foot certified Cat 5e patch cables.
When these computers boot, and the switch ports are set to auto-negotiate,
both ends *always* come up full duplex.  However, if a patch cable is
briefly disconnected (or power is removed from the switch), the switch
port comes back up at *half* duplex.

A duplex mismatch can be invisible at low to moderate traffic loads on a
given connection, but at high loads the connection breaks down with
massive numbers of errors.  Accordingly, on switch ports connected to
servers we force the duplex setting to full (which probably has little or
no throughput improvement over half duplex, because of limitations in the
Mac OS).

YMMV,

Mark E. Ingram

[EMAIL PROTECTED] (also [EMAIL PROTECTED])



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Re: G4s and error 519

2000-11-27 Thread David Ross

 So Retrospect reports errors that it finds in the network setup that
 doesn't affect ANYTHING else? If these errors existed then why does
 nothing else complain?
 
 Yet.
 
 I copy large files from one machine to another, but that never fails
 
 Yet.
 
 That's taking a rather simplistic approach that my experience so far
 does not support. I've had no known network failures of any kind -
 except Retrospect. To simply say that I will have one day is dodging
 the issue.

If you look at how ethernet works, most of time anything you do will
mask errors. EtherNet has error recovery built in. So an undemanding
transfer, such as a Finder copy, will tend to get through, errors or
not. It's those programs that really hammer the network, like a backup
program trying to keep a tape at speed, that tend to fail.

I've seen what you describe multiple times and it's always turned out to
be a system or network problem, not a Retrospect problem. Not that that
made it any less frustrating. But I have learned that a repeating
problem being reported by Retrospect means I have a problem somewhere
that I'll have to solve at some point.

While not an expert, I have been using retrospect since about 90,
starting with those "incredibly" reliable TEAC 60MB tapes. 30 sites
later, I've still not found anything better.


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Re: G4s and error 519

2000-11-26 Thread Ken Gillett

At 6:53 AM -0600 24/11/00, Don Foy wrote:

I want
everything perfect for a backup, since a less than perfect backup is
absolutely useless. That one byte it missed and didn't tell me about may
have been in the middle of a file that could cost me several thousands
dollars.


I agree, but in that case I'd expect file transfers around my network 
to be producing useless files since 1 byte lost will affect those 
just as much as in a backup. My point is that this is simply not 
happening.

If I can throw a 600+ Mb file from one machine to another, then IMO 
Retrospect ought to be able to back it up without falling over.


That's not a fault of Retrospect, but a feature, the way I see it.


Hmmm.


-- 



Ken  G i l l e t t


_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/


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Re: G4s and error 519

2000-11-26 Thread Ken Gillett

At 12:52 PM -0600 24/11/00, Pam Lefkowitz wrote:
So Retrospect reports errors that it finds in the network setup that
doesn't affect ANYTHING else? If these errors existed then why does
nothing else complain?

Yet.

I copy large files from one machine to another, but that never fails

Yet.


That's taking a rather simplistic approach that my experience so far 
does not support. I've had no known network failures of any kind - 
except Retrospect. To simply say that I will have one day is dodging 
the issue.


  If it is a SCSI problem, then shouldn't
Retrospect report it as such?


I've not found 519's to be SCSI issues. They are network issues. And
almost always hardware. If you're experiencing 519's on multiple servers
then I'd take a hard look at the infrastructure in place. Somewhere there
is a "frayed" cable or a port/switch/router/hub that's either failing or
getting ready to fail.


Well here's another take on the 519 errors. Can SCSI errors generate 
a 519 or not? Anyone know for sure?


Backup software should the most reliable software in use on the
network, yet Retrospect is the only software that consistently fails
to do what it is supposed to.

This *is* the most reliable software in use on your network. And, in
addition, it is probably the most useful network assessment tool you have
as well. If Retrospect is telling you that you have a network
problem...you do (or will) indeed have a network problem. Consider
looking at it as more than just backup
software...consider looking at it as a diagnostic tool. Better than any
other tool out there for finding hardware problems.


No, sorry but that's nonsense. Everything else runs 100% reliably - 
except Retrospect. Maybe it is finding little network niggles that 
exist, but all the other network software manages to work despite 
this. If Retrospect could report the problem, but continue to get the 
backup done then that would be OK.

Retrospect is NOT a network diagnostic tool. If it was then it should 
at least tell me where the fault lies, not just report some nebulous 
'network communication error'.


It does run correctly and it does run reliably.


How can you say that when I am reporting that it is the ONLY network 
product that fails to complete the task for which it is expressly 
designed to do? Maybe you have a different understanding of the word 
"reliable".

Look, I don't want to bash Dantz here, but these responses show that 
some users just blindly follow the dogma that Retrospect is perfect 
and the fault lies elsewhere. Well I'm sorry, but if I bought a car 
and the wheels kept falling off and the manufacturer insisted it was 
not their fault, it was the road surface, yet although the road was a 
bit rough, no other cars were losing their wheels, I'd say that the 
fault lies with the manufacturer who should to look at how they could 
stop the wheels falling off their car even on bumpy roads.

It would also appear that I'm not the only one whose wheels keep falling off...

-- 



Ken  G i l l e t t


_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/


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Re: G4s and error 519

2000-11-26 Thread Eric Ullman

Hi Ken,

The members of this list who are suggesting that your 519 errors are due to
something other than a problem with Retrospect are not doing so because they
"blindly follow the dogma that Retrospect is perfect," it's because they
have found it themselves to be true...for some of them, even after being
*certain* that there was a problem with Retrospect.

One particular user that comes to mind, Travis Morgan, had complained of 519
errors for months. Because nothing else was giving him problems, he was
fairly certain that the problem was a bug in Retrospect. Well, here's what
he finally discovered (quoted from his Nov 5, 1999 post):

   Turns out that Virex 5.9.1 (and Virex 6.0) tries to scan the MRJ
 2.x (Macintosh Runtime for Java) files when the backups are occurring
 so the Retrospect backup has to wait while the machine is done
 scanning those files. The reason for the long delay is because the
 MRJ files are compressed and I have Virex to scan compressed files.
 After turning off "Scan Compressed files" on my problematic machines,
 I haven't seen a 519 error ever since. WAH!

Reliable means one thing, Ken--you can restore with confidence. Network
communication errors limit Retrospect's reliability (that's why it reports
the error and moves on to the next task). Sure, Retrospect isn't a
diagnostic tool, but it is a canary in a coal mine; it will find problems
that don't show up otherwise. Nevertheless, those problems are every bit
real, and you will need to track them down and eliminate them to guarantee
the reliability of your backups.

Please read and follow our Tech Note on troubleshooting 519 errors.
http://www.dantz.com/index.php3?SCREEN=tn415 If you need help with any of
the procedures, please contact our tech support department. (925.253.3050)

I know these errors can be difficult to track down--I've done it myself. So
hang in there, call us if you need to, and have a little faith in what we're
telling you.

Best regards,

Eric Ullman
Dantz Development


Ken Gillett [EMAIL PROTECTED] wrote:

 Retrospect is NOT a network diagnostic tool. If it was then it should
 at least tell me where the fault lies, not just report some nebulous
 'network communication error'.
 
 How can you say that when I am reporting that it is the ONLY network
 product that fails to complete the task for which it is expressly
 designed to do? Maybe you have a different understanding of the word
 "reliable".
 
 Look, I don't want to bash Dantz here, but these responses show that
 some users just blindly follow the dogma that Retrospect is perfect
 and the fault lies elsewhere. Well I'm sorry, but if I bought a car
 and the wheels kept falling off and the manufacturer insisted it was
 not their fault, it was the road surface, yet although the road was a
 bit rough, no other cars were losing their wheels, I'd say that the
 fault lies with the manufacturer who should to look at how they could
 stop the wheels falling off their car even on bumpy roads.
 
 It would also appear that I'm not the only one whose wheels keep falling
 off...



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Re: G4s and error 519

2000-11-26 Thread Todd Reed

I'm having the same type of problem with a lone G4 on a small 
network. The other systems there, a blue G3, a beige tower G3 plus a 
clone and a 6100, all seem to get backed up without fail.

I tried replacing the 10Bt hub with a Linksys 10/100 hub thinking 
that would do the trick. It seemed to let the backups go a little 
longer, but supposedly the G4 is failing again to get backed up.

Has anyone tried putting a new NIC into a G4 instead of using the on 
board ethernet as a way to resolve this problem?

Todd Reed




On 11/24/00, Glenn L. Austin  emailed about  "Re: G4s and error 519":
   So Retrospect reports errors that it finds in the network setup that
  doesn't affect ANYTHING else? If these errors existed then why does
  nothing else complain? I'm sure that it does hit the network hard,
  but IMO it should be written to cope with that. It should not the
  task of the customer to swap NICs or hubs or whatever until one is
  found that works. If a NIC will connect with the network then
  Retrospect should be able to use it.

I can understand your frustration, having been on the "other side" with some
products that I've worked on.  In my case, in *every* case, the software
that I wrote uncovered hardware and system problems that, when corrected,
solved other "nagging" stability problems that the users had just accepted.

In my opinion, I doubt that the problems don't affect anything else -- more
likely is that the problems that are occurring are minor enough that nobody
has reported them.

That being said, there apparently are some G4 machines that have some
problems with their ethernet interfaces.

--
Glenn L. Austin
Computer Wizard and Race Car Driver
[EMAIL PROTECTED]
http://www.austin-home.com/glenn/



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Re: G4s and error 519

2000-11-26 Thread Ken Gillett

At 9:02 AM -0800 26/11/00, Eric Ullman wrote:
  he was
fairly certain that the problem was a bug in Retrospect.


I hope you understand that is NOT what I have been suggesting.

I need to finish rebuilding my network then I can give it a good 
testing with a variety of backup servers, MacOS9 (X when available), 
Windows NT and 2000 and similar clients. We'll see what happens 
then.


-- 



Ken  G i l l e t t


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Re: G4s and error 519

2000-11-26 Thread Steve Axthelm

I'm having the same type of problem with a lone G4 on a small 
network. The other systems there, a blue G3, a beige tower G3 plus a 
clone and a 6100, all seem to get backed up without fail.
[snip]

Just another data point:

We have 7 G4's here (early PCI to newest AGP) on our network here on 
along with 35 or so other Macs and PCs (all 100BT, almost all of them 
switched with HP switches) and the only time we get 519 errors with 
any of the machines is when they are shut down or have crashed 
(backing up to a WinNT/DDS4 box and a MacOS 9 DDS2 box). There was on 
user who was running some kind of "Reminder" program that would put 
up modal dialogs and give us a 519, but otherwise no problems here.

Good Luck!



-- 
-Steve

---
Steve Axthelm
Mudpuppy Studios
[EMAIL PROTECTED]
503.227.1775


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Re: G4s and error 519

2000-11-24 Thread Don Foy


Adrian.

The termination problem was on the client, which is an ASIP server. It just
took out that particular client. However, if there is a termination problem
on the Retrospect 'server' then I guess you could see 519 errors.

It sounds like you need to talk with the folks at Retrospect in person.
Their tech support is second to none and they can help better when you call.

Don


on 11/23/00 10:55 PM, Adrian Smith at [EMAIL PROTECTED] wrote:

 
 If you are having 519 errors, there is a problem in your setup, either
 hardware, software or network. You most likely either have a SCSI problem
 (which was the case the last time I had a 519, termination problems),
 
 Don, what were the other symptoms when you had the termination
 problem? Did it take out the whole backup or just specific clients?
 
 Unlike Ken, we have no problem with server Mac and in our case it is
 only the G4s that have the problem and only the CLIENT drops the
 network connection. The backup Mac is fine and can go on to back up
 the other clients. The client will regain the network after a restart
 or sleep. It sounds just like the symptoms of the problem that was
 supposed to fixed with the Ethernet update, expect that the Ethernet
 update doesn't fix it and when I went and checked the details (TIL
 25147) it doesn't actually seem to be the same problem.
 
 Adrian
 


Don Foy  [EMAIL PROTECTED]
Webmaster and Network Manager Herald-Citizen
Cookeville, Tenn.  http://www.herald-citizen.com
Personal email: [EMAIL PROTECTED]



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Re: G4s and error 519

2000-11-24 Thread Don Foy

on 11/23/00 2:09 PM, Ken Gillett at [EMAIL PROTECTED] wrote:

 So Retrospect reports errors that it finds in the network setup that
 doesn't affect ANYTHING else? If these errors existed then why does
 nothing else complain? I'm sure that it does hit the network hard,
 but IMO it should be written to cope with that. It should not the
 task of the customer to swap NICs or hubs or whatever until one is
 found that works. If a NIC will connect with the network then
 Retrospect should be able to use it.

I'll let the Dantz folks respond to this charge, since they have heard it
before, but when I did my job and got the network and clients working right,
Retrospect worked right. It is the best trouble-finding tool out there. I
know that if Retrospect works, everything else will.

That's not a fault of Retrospect, but a feature, the way I see it. I want
everything perfect for a backup, since a less than perfect backup is
absolutely useless. That one byte it missed and didn't tell me about may
have been in the middle of a file that could cost me several thousands
dollars.

Don



Don Foy  [EMAIL PROTECTED]
Webmaster and Network Manager Herald-Citizen
Cookeville, Tenn.  http://www.herald-citizen.com
Personal email: [EMAIL PROTECTED]



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Re: G4s and error 519

2000-11-24 Thread Glenn L. Austin

 So Retrospect reports errors that it finds in the network setup that
 doesn't affect ANYTHING else? If these errors existed then why does
 nothing else complain? I'm sure that it does hit the network hard,
 but IMO it should be written to cope with that. It should not the
 task of the customer to swap NICs or hubs or whatever until one is
 found that works. If a NIC will connect with the network then
 Retrospect should be able to use it.

I can understand your frustration, having been on the "other side" with some
products that I've worked on.  In my case, in *every* case, the software
that I wrote uncovered hardware and system problems that, when corrected,
solved other "nagging" stability problems that the users had just accepted.

In my opinion, I doubt that the problems don't affect anything else -- more
likely is that the problems that are occurring are minor enough that nobody
has reported them.

That being said, there apparently are some G4 machines that have some
problems with their ethernet interfaces.

-- 
Glenn L. Austin
Computer Wizard and Race Car Driver
[EMAIL PROTECTED]
http://www.austin-home.com/glenn/



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Re: G4s and error 519

2000-11-24 Thread Pam Lefkowitz

So Retrospect reports errors that it finds in the network setup that 
doesn't affect ANYTHING else? If these errors existed then why does 
nothing else complain? 

Yet.

I copy large files from one machine to another, but that never fails 

Yet.

 If it is a SCSI problem, then shouldn't 
Retrospect report it as such?


I've not found 519's to be SCSI issues. They are network issues. And 
almost always hardware. If you're experiencing 519's on multiple servers 
then I'd take a hard look at the infrastructure in place. Somewhere there 
is a "frayed" cable or a port/switch/router/hub that's either failing or 
getting ready to fail.

Backup software should the most reliable software in use on the 
network, yet Retrospect is the only software that consistently fails 
to do what it is supposed to. 

This *is* the most reliable software in use on your network. And, in 
addition, it is probably the most useful network assessment tool you have 
as well. If Retrospect is telling you that you have a network 
problem...you do (or will) indeed have a network problem. Consider 
looking at it as more than just backup
software...consider looking at it as a diagnostic tool. Better than any 
other tool out there for finding hardware problems.

I like Retrospect and simply want it to 
run correctly and of course reliably.

It does run correctly and it does run reliably. Dantz just doesn't market 
all its features apparently. Wouldn't it be odd for them to put this out 
as a networking tool that does backup too? Better that it does the 
backups right and gives you the value add of being a kickin' proactive 
diagnostic as well. It's all in how you view it. :-) 

Besides, if you use this added value to your advantage and find the 
failing segment before it fails you will be a hero, get a raise, get a 
promotion, a nice Christmas bonus, maybe conquer the world. OK, I got a 
little carried away...maybe you won't get a promotion.

Pam


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Re: G4s and error 519

2000-11-23 Thread Bob Boonstra

At 8:00 PM -0800 11/22/00, retro-talk wrote:

   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).

I have the same problem with a G4/500 (single processor).  Dantz tech 
support suggested I turn on link encryption (to slow down the 
backup).  That didn't help.  They then suggested it was the fault of 
a router.  I moved the G4 to various ports on my Asante FriendlyNet 
8+2 to no effect.  I tried both 10Mbps ports and 100 Mbps ports, both 
half and full duplex.  No effect.  Tried a 10Mbps hub instead of the 
Asante switch.  No effect.  I switched Retrospect host machines.  No 
effect.  I've tried various backup devices (VXA, DDS, CD-RW), no 
effect.

Software is Mac OS 9.0.4, everything up-to-date, and Retrospect 4.3.

I don't have this problem with any of the other 9 machines I back up, 
and this machine is the only G4.

I'm backing up a 27MB internal hard drive on this machine, divided 
into 4 partitions, roughly sized at (usable space) 2MB, 8MB, 13.5MB, 
and 2MB.  When doing a full backup, the failure usually occurs on the 
3rd partition.

By running 3 or 4 incrementals after a full backup, I can usually get 
through the entire drive.  Most incremental backups after that are 
usually small enough to success, but not always.
-- 
Bob Boonstra
mailto:[EMAIL PROTECTED]
http://www.windmillsw.com


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Re: G4s and error 519

2000-11-23 Thread Ken Gillett

At 4:02 PM + 22/11/00, Nicholas Froome wrote:
  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


I have continually experienced this with both Mac and NT clients ever 
since I started trying to backup over the network. The only way I can 
get a backup to complete is to turn verification off, then it seems 
to be ok. But with it on, it loses the connection at some time and 
the server Mac must be restarted to get any sense out of its network 
connection.

I am trying to run QuickDNS and IPNetRouter on this 8100 and I do not 
consider this should be impossible, but even if Retrospect does 
complete I invariably suffer network troubles afterwards until it is 
restarted, e.g. I cannot access the DNS, or the machine simply 
doesn't route any more.

I have always believed in Retrospect, but I must say that I am sorely 
disappointed by this. It seems as if its use of TCP/IP on the Mac is 
really flaky, nothing should be able to pull down the OT stack like 
that. I intend to try this with Retrospect on an NT (well 2000) 
server and see if that can work reliably, but IMO it should work on 
the Mac and I don't see why I should have to dedicate a machine to 
this task. Actually, I've no idea if that would be any better anyway.

Just what is the 519 error, what actually occurs that causes 
Retrospect to report it and how come it requires a restart of the Mac 
in order to get its network running again?


At 5:27 PM + 22/11/00, Nicholas Froome wrote:

How much data are you backing up? Is the problem intermittent? Does 
it happen on any other machines? As a percentage, what proportion of 
the backups (of the G4s) fail?


100% with verification on.


In a client's setup we found the problem (error 519) to be 
apparently unrelated to anything. It would occur on almost every 
machine at some point, after a few Mb had been copied or after 
copying 5 Gb out of 5.2 Gb, independent of machine OS, independent 
of date or time, and all the backups were being done overnight when 
there was no other network traffic.


This is very much my experience. I just cannot understand why NOTHING 
else has ever given any network error here, yet Retrospect has so 
much trouble.

I'm sure the data that Retrospect writes to tape is good and it's 
never failed to restore anything I've asked, but that was before I 
tried network backups. It does seem to be a recurring problem as it 
regularly crops up on this list.


-- 



Ken  G i l l e t t


_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/


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Re: G4s and error 519

2000-11-23 Thread Don Foy

on 11/23/00 6:50 AM, Ken Gillett at [EMAIL PROTECTED] wrote:

 Just what is the 519 error, what actually occurs that causes
 Retrospect to report it and how come it requires a restart of the Mac
 in order to get its network running again?

Before the guys at Dantz get back from the holiday, I'll let you in on a
little secret ‹ 519 errors are some of the most common. They are not caused
by Retrospect, just found by it.

Retrospect is very demanding. It requires that everything be right in your
machine and network setup (Imagine that).

If you are having 519 errors, there is a problem in your setup, either
hardware, software or network. You most likely either have a SCSI problem
(which was the case the last time I had a 519, termination problems), a
system incompatibility (sometimes a corrupt system or mismatched components
(like OS 8.5 with ASIP 5 (that was pretty stupid)) or a network problem
(replace those old hubs with switches, which creates more potential
problems).

Dantz has an in depth technical not on 519 errors at:

http://www.dantz.com/index.php3?SCREEN=tn415

Good hunting.

BTW, why are we all at our computers this morning? Isn't this supposed to be
a holiday?

Don





Don Foy  [EMAIL PROTECTED]
Webmaster and Network Manager Herald-Citizen
Cookeville, Tenn.  http://www.herald-citizen.com
Personal email: [EMAIL PROTECTED]



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Re: G4s and error 519

2000-11-23 Thread Nicholas Froome


Before the guys at Dantz get back from the holiday, I'll let you in on a
little secret - 519 errors are some of the most common. They are not caused
by Retrospect, just found by it.

Retrospect is very demanding. It requires that everything be right in your
machine and network setup (Imagine that).

If you are having 519 errors, there is a problem in your setup, either
hardware, software or network. You most likely either have a SCSI problem
(which was the case the last time I had a 519, termination problems), a
system incompatibility (sometimes a corrupt system or mismatched components
(like OS 8.5 with ASIP 5 (that was pretty stupid)) or a network problem
(replace those old hubs with switches, which creates more potential
problems).

I've always said that if you tried to design a network stress-testing tool you'd end 
up with Retrospect... It is obviously trying to max out everything, all the time, and 
will find problems wherever they lie.

If 519 is, at it seems to be, a generic error, then how do we find the cause(s)? It 
seems to me that they present a problem only if their frequency undermines the 
successful completion of a backup. On a setup (as I described) that can't complete a 
Recycle or Incremental backup on one day, a 519, leading to one machine not being 
backed up, can't be considered a problem - unless it fails again the next day.

Yes I'd like to fix every problem on the client's network, but it isn't financially 
viable to do so. So what is the best methodolgy for finding the problem? The Dantz TIL 
is useful but does not address this.

One thing that is always common is the backup machine, backup device and the network. 
If a 519 can be caused by local, backup server-related cause such as a termination 
problem, as well as client-related problems, then the error message is useless for 
fault-finding. So where to start?


BTW, why are we all at our computers this morning? Isn't this supposed to be
a holiday?

Only for that small percentage of people in the world who live in the USA...


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Re: G4s and error 519

2000-11-23 Thread Adrian Smith


If you are having 519 errors, there is a problem in your setup, either
hardware, software or network. You most likely either have a SCSI problem
(which was the case the last time I had a 519, termination problems),

Don, what were the other symptoms when you had the termination 
problem? Did it take out the whole backup or just specific clients?

Unlike Ken, we have no problem with server Mac and in our case it is 
only the G4s that have the problem and only the CLIENT drops the 
network connection. The backup Mac is fine and can go on to back up 
the other clients. The client will regain the network after a restart 
or sleep. It sounds just like the symptoms of the problem that was 
supposed to fixed with the Ethernet update, expect that the Ethernet 
update doesn't fix it and when I went and checked the details (TIL 
25147) it doesn't actually seem to be the same problem.

Adrian


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Re: G4s and error 519

2000-11-23 Thread Ken Gillett

At 10:34 AM -0600 23/11/00, Don Foy wrote:

Before the guys at Dantz get back from the holiday, I'll let you in on a
little secret - 519 errors are some of the most common. They are not caused
by Retrospect, just found by it.

Retrospect is very demanding. It requires that everything be right in your
machine and network setup (Imagine that).

If you are having 519 errors, there is a problem in your setup, either
hardware, software or network. You most likely either have a SCSI problem
(which was the case the last time I had a 519, termination problems), a
system incompatibility (sometimes a corrupt system or mismatched components
(like OS 8.5 with ASIP 5 (that was pretty stupid)) or a network problem
(replace those old hubs with switches, which creates more potential
problems).

Dantz has an in depth technical not on 519 errors at:

http://www.dantz.com/index.php3?SCREEN=tn415


So Retrospect reports errors that it finds in the network setup that 
doesn't affect ANYTHING else? If these errors existed then why does 
nothing else complain? I'm sure that it does hit the network hard, 
but IMO it should be written to cope with that. It should not the 
task of the customer to swap NICs or hubs or whatever until one is 
found that works. If a NIC will connect with the network then 
Retrospect should be able to use it.

I copy large files from one machine to another, but that never fails 
so how come Retrospect falls over - badly.

You mention SCSI problems, but don't indicate if this was related to 
the server of client. In fact I don't know if the 519 error is client 
induced or resides solely in the server. Since this can occur with 
all the clients it points to the server, but this is the third Mac 
I've tried it on If it is a SCSI problem, then shouldn't 
Retrospect report it as such?

Backup software should the most reliable software in use on the 
network, yet Retrospect is the only software that consistently fails 
to do what it is supposed to. I like Retrospect and simply want it to 
run correctly and of course reliably.

-- 



Ken  G i l l e t t


_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/


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Re: G4s and error 519

2000-11-22 Thread Adrian Smith

 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).

Disable the OT AutoPush extension and try again - worked for us!

Have you got TCP/IP set as active and "Load only when needed" 
unchecked - I thought so..


Unfortunately, we don't have the OT AutoPush extension to disable.

And yes, TCP/IP is active and "Load only when needed" is unchecked...


Adrian


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Re: G4s and error 519

2000-11-22 Thread Nicholas Froome

Adrian


 We are having problems backing up G4s over the network. Basically, they

...

Disable the OT AutoPush extension and try again - worked for us!

Have you got TCP/IP set as active and "Load only when needed" unchecked - I thought 
so..


Unfortunately, we don't have the OT AutoPush extension to disable.

And yes, TCP/IP is active and "Load only when needed" is unchecked...

Mmmm. OK, check the connection speed and duplex setting to the hub/switch in Apple 
System Profiler. If it's 100Base-T try setting it down to 10Base-T for the backup and 
see what happens then. There's an unsupported tool to do this - check the Apple site.

How much data are you backing up? Is the problem intermittent? Does it happen on any 
other machines? As a percentage, what proportion of the backups (of the G4s) fail?

In a client's setup we found the problem (error 519) to be apparently unrelated to 
anything. It would occur on almost every machine at some point, after a few Mb had 
been copied or after copying 5 Gb out of 5.2 Gb, independent of machine OS, 
independent of date or time, and all the backups were being done overnight when there 
was no other network traffic.

The only thing I concluded was common to the each failure was the backup server Mac 
and the network.

I disabled OT Autopush one one machine - the worst affected - and the occurrence of 
519s dropped to be average. The client has so much data to backup that an ovenight 
backup won't get all the data on the network, so I rationalised that one error 519 per 
night was acceptable. Backup Server would then prioritise that machine the next night 
- and we haven't seen any cases of the same machine erroring out on successive nights. 
Not exactly problem solved, but problem minimised.


Regards


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Re: G4s and error 519

2000-11-22 Thread matt barkdull

Mmmm. OK, check the connection speed and duplex setting to the 
hub/switch in Apple System Profiler.


Hmm, You know, this one got me.  I was not aware of any program that 
would get speed and duplex on a Mac.

I just checked Apple System Profiler (version 2.4.4) and it don't 
show me.  Maybe this works only on Apple cards?   I have an Asante 
10/100 NIC.

Thanks,

Matt



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Re: G4s and error 519

2000-11-22 Thread Nicholas Froome

Mmmm. OK, check the connection speed and duplex setting to the hub/switch in Apple 
System Profiler.


Hmm, You know, this one got me.  I was not aware of any program that would get speed 
and duplex on a Mac.

I just checked Apple System Profiler (version 2.4.4) and it don't show me.  Maybe 
this works only on Apple cards?   I have an Asante 10/100 NIC.


ASP only works on Apple Cards. It's under System Profile:Network Overview

Try switching to the Apple NIC - why would you want to use an Asante one? The built-in 
NIC is 10/100..

See if the Apple NIC reduces 519s.


Regards


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Re: G4s and error 519

2000-11-22 Thread matt barkdull

I'm a different person than who brought up the initial issue.  I was 
asking this for my information.  Thanks!

The Macs I have are older and they do not have the 10/100 built in. 
Beige G3/300 and a 9600/G4-450.


  Mmmm. OK, check the connection speed and duplex setting to the 
hub/switch in Apple System Profiler.


Hmm, You know, this one got me.  I was not aware of any program 
that would get speed and duplex on a Mac.

I just checked Apple System Profiler (version 2.4.4) and it don't 
show me.  Maybe this works only on Apple cards?   I have an Asante 
10/100 NIC.


ASP only works on Apple Cards. It's under System Profile:Network Overview

Try switching to the Apple NIC - why would you want to use an Asante 
one? The built-in NIC is 10/100..

See if the Apple NIC reduces 519s.


Regards


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Re: G4s and error 519

2000-11-22 Thread Chuck Hornish

matt barkdull wrote:
 
 Mmmm. OK, check the connection speed and duplex setting to the
 hub/switch in Apple System Profiler.
 
 Hmm, You know, this one got me.  I was not aware of any program that
 would get speed and duplex on a Mac.
 
 I just checked Apple System Profiler (version 2.4.4) and it don't
 show me.  Maybe this works only on Apple cards?   I have an Asante
 10/100 NIC.

The Asante software has that capability.

-- 
Best Regards,

Chuck Hornish, KF6YBC
Narnia Information Systems, Inc.
Fountain Valley, California 92708 USA

Voice: 714-963-7742  FAX: 714-593-5808

mailto:[EMAIL PROTECTED]

Delivering precisely defined database solutions since 1992.


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G4s and error 519

2000-11-21 Thread Adrian Smith

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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