Moving data from LTO-2 to LTO-4

Question

Could anyone tell me if there's a simple way to move lots of data from LTO-2 to LTO-4 easily? We are getting rid of LTO-2s and I would like to transfer everything to LTO-4 or even LTO-5. I have about 500 LTO-2 tapes so doing this manually one by one would be a PITA...
thanks!

mph999 · Accepted Answer

Two choices, bupilcate all the images, or duplicate all the tapes - all tapes is probably easier.
A list of tapes containing images can be found from :
bpmedialist

You can then run a loop and feed the tape list into bpduplicate command

Eg.

cat media_list |while read TAPE
do
bpduplicate -id $TAPE -dstunit  -dp 
done

where 'media_list' is a file containing a list of the media ids.

Martin

c_moisan · Answer

Sorry, I should have mentionned that we are using NB 7.5.0.3

bills · Answer

mph99:
I have often wondered whether the -id option to bpduplicate would do this - the man page is unclear on what it does with spanned images:
"Search the image catalog for backups to duplicate that are on this media ID. If the original is fragmented between different media IDs, NetBackup duplicates only the backups that exist on the specified media ID. Backups that span media are duplicated, but not any other backups on the spanned media ID."
	&nbsp;
The second sentence to me indicates that backup fragments on spanned media will NOT be duplicated.&nbsp; But the third sentence seems to indicate that spanned fragments ARE duplicated.&nbsp; Can you clarify?
To answer the orignal question, I would have said duplicate the images:
for&nbsp;tape in `cat media_list` ; do
&nbsp; bpimmedia -mediaid $tape | awk '/IMAGE/ {print $4}' &gt;&gt; imagelist
done
bpduplicate&nbsp;-dstunit &lt;stunit&gt; -dp &lt;pool&gt; -Bidfile imagelist
	&nbsp;
If you do this, make a copy of the imagelist file, as bpduplicate will delete it, and it will take a while to generate it.
Bill

andy_welburn · Answer

"Search the image catalog for backups to duplicate that are on this media ID. If the original is fragmented between different media IDs, NetBackup duplicates only the backups that exist on the specified media ID. Backups that span media are duplicated, but not any other backups on the spanned media ID."

&nbsp;
As I read it:
Media_ID "1" has images A and B on it. Image A is totally on "1", Image B spans to Media_ID "2"
Media_ID "2" has images B and C on it. Image B as the last 'fragment' from above, Image C in toto.
&nbsp;
A bpduplicate of Media_ID "1" would duplicate images A &amp; B only (altho' it would require Media_ID "2" to complete image B)
&nbsp;
I *could* be (very) wrong as it's not overly clear ;)

c_moisan · Answer

Thanks for your answers, guys, I will look into this with my colleague who's better at this than me.

mph999 · Answer

Hi Guys,
&nbsp;
My understanding is that if you have two tapes and one contains an image spanning onto the second tape, and the second tape contains other images :
Duplicating tape 1 will duplicate tape 1 + the image on tape 2
Duplicating tape 2 will duplicate the remaining images on tape 2
... so it should work fine.
In fact I just had a case like this, and a customer duplicated their tapes using this method I explained.
&nbsp;
You could duplicate images as opposed to tapes, this is fine, but you'll probably end up with many more tape loads/ unloads - not a big deal, but I think going on tape would be easier to keep track of, for a start there are probably less tapes than the number of images ...
Martin
&nbsp;

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