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Copying files to an AIX DVD is very slow, is there a way to increase the speed?

Posted on 2011-09-04
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Last Modified: 2012-05-12
The DVD is formatted as a udfs filesystem.  I have a lot of small compressed files that I want to store on several DVD's.  It took over 11 hours to copy 7600 files.  Is there a faster way to write these files to the DVD?
I used the following:
mount -Vudfs /dev/cd0 /mnt
find . -depth | cpio -pdum /mnt

The lscfg for the DVD is:
  cd0              U789C.001.AAA0429-P2-D2  SATA DVD-RAM Drive

        Manufacturer................IBM
        Machine Type and Model......RMBO0020581
        ROS Level and ID............RA33
        Device Specific.(Z0)........058002028F000030
        Part Number.................39J5771
        EC Level....................H86952
        FRU Number..................39J5772
        Hardware Location Code......U789C.001.AAA0429-P2-D2

The system is:
System Model: IBM,8203-E4A
Processor Type: PowerPC_POWER6
Number Of Processors: 1
Processor Clock Speed: 4204 MHz
CPU Type: 64-bit
Kernel Type: 64-bit
LPAR Info: 1 10-BAF01
Memory Size: 3760 MB
Good Memory Size: 3760 MB

We are running AIX 5.3

TIA,
Dan
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Question by:scodhk
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Accepted Solution

by:
wesly_chen earned 2000 total points
ID: 36481230
> I have a lot of small compressed files that I want to store on several DVD's.
use tar to archive those small files into single big file then copy only a few big files to DVD.
By the way, DVD rewriteable (udfs), 8x at most, is slower that write once (ISO), ~ 32x

Usage: (cd to parent directory of small gz file)
tar  cf   archive1.tar    <source folders>
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LVL 68

Expert Comment

by:woolmilkporc
ID: 36481564
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Author Closing Comment

by:scodhk
ID: 36481576
wesly_chen,

Thank you for your reply.  I was trying to keep the directory structure intact so that if they wanted to get a specific report from the DVD they would not have to search through different tar files.

It doesn't look like the DVD on AIX should be used for what I wanted to do.

Thanks again for your reply.
Dan
0
 

Author Comment

by:scodhk
ID: 36481978
Thanks woolmilkporc, we are behind in the TL updates.  Planning to upgrade to the latest TL12 in the next 2-3 weeks.

Hopefully that corrects the problem.

Thanks again,
Dan
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