Hi Yaron, 

Thanks for the feedback. I must be missing something.

You have confirmed that your LTO-2 cartridges are now all shown as LTO-3
media type. As far as I am aware the definition of the media type takes
place when the catridge is labelled, and is set according to the media
type of the drive.  This could be explained if all of your LTO-2
cartridges have been re-labelled since the introduction of your new
drives.

Can you confirm this ?

If not, I am baffled as to how they could have changed from LTO-2 media
type to LTO-3 media type.

Cheers,
John Hope-Bailie


-----Original Message-----
From: EMC NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU] On
Behalf Of Yaron Zabary
Sent: 26 August 2007 12:00 AM
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Subject: Re: [Networker] Mixed LTO tapes in a library

   We recently replaced our LTO-2 library (with IBM drives) with a new
LTO-3 library (with HP drives). All media was moved from the old library
to the new one with no apparent problem. All tapes are written and read
in the new library. So we had LTO-2 cartridges which were written in an
LTO-2 drive and read in an LTO-3 drive. I just checked and all media is
marked as LTO-3 media. This is probably because it resides in a library
with LTO-3 drives.

John Hope-Bailie wrote:
> We have a situation where there are numerous LTO-2 tapes exist with 
> historical backups.
>  
> We now intend to upgrade all of the tape drives in the library to
LTO-3.
>  
> We would use LTO-3 media for new backups, but would need to recover 
> off older media.
>  
> As I understand it, the new tape drives would be defined within 
> NetWorker as LTO Ultrium-3.
>  
> This would cause all of the new media to also be defined as media type

> LTO Ultrium-3 as it is labelled.
>  
> This would also prevent any of the old tapes defined as media type LTO
> Ultrium-2 from being loaded into the new drives, although physically, 
> the tape drives could read and write to this media.
>  
> Do I understand it correctly ?   Is there any workaround / compromise
?
>  
> Thanks,
>  
> John Hope-Bailie
> 
> 
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-- 

-- Yaron.

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