Re: verify media

[Eric Zylstra]

>What exactly is the purpose of verifying media after copying it?

To prevent data loss.


>How often is a file copied incorrect?

Every time a tape goes bad.


>My guess is that one file out of 10 billion, 10.000.000.000, is incorrect
>copied and I'm ain't gonna take the time to look for that file...
>
>I can see the point in verifying media but still, I see no point in
>veifying media...

I'm talking about byte-by-byte comparison.  If you do no comparison, 
do you check to see that your data is restorable?  If you don't check 
it, you must not have heard the common stories about having no 
useable backup after a major crash.  I've heard many.

Eric Zylstra
[EMAIL PROTECTED]


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Re: Temp Memory (Was: Re: Is 4.2 compatible with OS 8.6 and ASIP6.2)

[Eric Zylstra]

>The easiest way to prevent Retrospect from using temp system memory is to
>assign it more than 8,192 K in the Finder.
>
>Eric Ullman
>Dantz Development

I don't think that is the behavior I see.  I look at my "About this 
Computer" window and see Retrospect taking up about 12 MB or so.  If 
I stop the run, quit the programassign it 32 MB in the Finder, 
Retrospect, doing the same backup task as before, now takes up 44 MB 
(with a bunch of it "unused").

At least that was my experience before I moved it off my ASIP server 
due to instability.

Eric Zylstra
[EMAIL PROTECTED]


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RE: Compression and speed

[Seth D. Mattinen]

on 7/13/00 8:00 PM, retro-talk at [EMAIL PROTECTED] wrote:

> I'm not sure it's going to happen. I've been *begging* for this for over a
> year.
> 
> I'd LOVE to know, given a set of circumstances (such as number of clients,
> backup sessions, backup set size, processor speed, number of processors,
> etc), what kind of performance I might expect.
> 
> It would help when preparing to purchase Retrospect for Windows servers...
> 
> As it is, I somewhat blindly chose rather "huge" servers (and blindly chose
> the number of servers) to ensure maximum performance (minimum file matching
> times, etc).
> 
> How do I know if I went overboard? I don't, but I spent a *bundle* of money
> just to ensure I didn't undershoot my goals.
> 
> Brad.
> 
> -Original Message-
> From: Jeffry C. Nichols [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, July 13, 2000 9:43 AM
> To: retro-talk
> Subject: Compression and speed
> 
> 
> With all this talk of compression, speed, different drives, etc.,
> would it be possible for someone at Dantz to set up a database that
> Retrospect users could contribute to with the purpose of documenting
> the different systems and their performance?
> 
> At a minimum, it could include backup computer type, backup device
> used, connection type (SCSI, USB, Firewire), typical backup speeds as
> reported in the log file, and most importantly, footnotes to
> problems/solutions that people have tried or used to improve their
> own backup.

A simple database with a web interface of sorts would be easy to set up for
this purpose.

If anybody is interested, I may have some free time to work on something
over the next month and a half or so.

--
Seth D. Mattinen  [EMAIL PROTECTED]  http://roller.reno.nv.us/
PGP Key: http://seth.mattinen.org/pgp.php
There are two sides to every story. Every story has an end.



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Re: NT disks

[Jay]

You can create boot disks from the NT cd..
- Original Message - 
From: "Ken Gillett" <[EMAIL PROTECTED]>
To: "retro-talk" <[EMAIL PROTECTED]>
Sent: Friday, July 14, 2000 3:12 AM
Subject: NT disks


> Anyone suggest the best way to duplicate the boot disk on an Windows 
> NT4 machine, without having to back it up to tape then restoring to 
> the new disk? I simply want to put a larger disk in the machine, 
> replacing the original. So easy on a Mac. 
> 
> Thanks.
> 
> 
> -- 
> 
> 
> 
> Ken  G i l l e t t
> ---
> 
> 
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NT disks

[Ken Gillett]

Anyone suggest the best way to duplicate the boot disk on an Windows 
NT4 machine, without having to back it up to tape then restoring to 
the new disk? I simply want to put a larger disk in the machine, 
replacing the original. So easy on a Mac. 

Thanks.


-- 



Ken  G i l l e t t
---


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