Re: 16 MB catalog limit in 4.3

2000-09-05 Thread Eric Ullman

Stewart is correct. A file backup set's catalog is stored in the file's
resource fork, which cannot grow past 16 MB in size. This issue is covered
in the 4.3 Read Me and Retrospect Help.

Solving this problem requires *significant* changes to Retrospect's backup
set architecture--it's not a simple matter. We are working to address this
issue with a future release.

In the meantime, the Retrospect Help file suggests the following
workarounds:

o  Perform a recycle backup to the file backup set, which
   clears the catalog and starts anew. (Backed-up data in
   the set is removed.)

o  Perform a new media backup to the file backup set, which
   creates a new, empty file with an empty catalog. (The
   old file is left intact with its backed-up data.)

o  Do not try to copy so many files or volumes to the file
   backup set. Consider creating separate backup sets for
   different volumes.

o  Stop using file backup sets and instead use CDs, disks,
   or tapes. You may transfer backed-up data in file backup
   sets to other kinds of backup sets.

o  Leave the catalog compression option on (it is on by
   default) to help keep down the size of catalogs.

I hope this helps.

Eric Ullman
Dantz Development


Stewart Macdonald [EMAIL PROTECTED] wrote:

 Lawrence E. Bakst ([EMAIL PROTECTED]) recycled some electrons by writing:
 
 Can anyone comment if the 16 MB catalog limit is going to fixed soon?
 Are there any other limits I will run into after this one. Can
 someone describe why this limit exists? My guess us that there is a
 24 bit quantity in a data structure that causes the limit and that
 the other byte is used for something else. If that is the case, it
 doesn't sound too hard to fix.
 
 I believe that the manual says that this is due to the 16MB limit on a
 file's resource fork. The catalogue is stored in the Resource fork, so you
 get the limit. I guess if Dantz changed the location of the catalogue, it'd
 remove the limit.



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Re: 16 MB catalog limit in 4.3

2000-09-05 Thread Samuel Sharp

 
HI!

I'm using Retrospect 4.3, an iBookSE and 3 VST USB Hard drives (6 gigs each).

At present I'm using the "duplicate" feature. This results in 3 backup
sets. However, I can't leave the USB connectors in hubs because the VST
drives appear to each have their own desktops and the result is clutter.

Would you recommend - is it possible - that I use the three VST external
drives for one big incremental backup set. If so, I know it wouldn't be a
Macintosh file, which is contained on one disk. However, would it be like
using Jaz or Zip disks?

I guess my question is what is the best way to back up with the new large
size (6 gig each, for 18 gigs total; iBook has 6 gigs too) external
drives under USB? I can't keep them all connected at the same time,
unless perhaps, doing a normal incremental backup would avoid the destop
clutter problem. Otherwise, I would just keep one plugged in at a time.

Would 4.3 know to jump to the next VST drive when one got filled up?

Thank you in advance for any time and effort in answering my question. I
want the best backup scheme possible, which is why I'm using Retrospect
to begin with. :-)

Best regards,

Samuel Sharp
[EMAIL PROTECTED]


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Re: Retro Speed

2000-09-05 Thread Keepsake

I apologize for reopening a dead thread on the list, but I just 
wanted to share.

Running Retrospect 4.2 on a Quadra 950 with 40 MB RAM over built-in 
ethernet to our ASIP server, I get 13-16 MB/min.

Having moved Retrospect and the tape drive over to the server* (after 
addressing stability concerns) and upgrading to 4.3, I get 25-40 
MB/min.

*PowerMac 9500/132
Using Seagate Travan tape drive (using byte-by-byte confirmation for safety)
Tape drive connected to external built-in SCSI interface
Initio Miles 40 MB/sec SCSI card
7200 RPM Atlas III drives

Michael Scheurer wrote:
on 17/8/2000 4:27 AM, Matt Barkdull  wrote:

  Using the built in 10BaseT- 62MB/min
  Using an Asante 10/100 at 100 - 112MB/min.

I wish I could get anywhere near this, mine tops out of about 40Mb/min even
an a G4, mind you it's only a 2606 SCSI card with DDS3 drives, even with
built-in SCSI on a 7300 I don't get above 40. :(

In theory I should be getting 60Mb/min coming from our old NT server as I
can get 1Mb/sec copying from it.

-- 
Eric Zylstra
[EMAIL PROTECTED]


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