Ooops, I didn't put enough details here.
The LTO-1 drive/library is still attached to its original scsi 
controller on the host.  I added a new scsi card for the LTO-4 library.

The task I need to accomplish is to duplicate selected images from the 
LTO1 media onto the LTO4 media, and then the LTO1 hardware goes away.



> My understanding is that LTO4 drives are not backwards-read compatible with 
> LTO1.  Only LTO2 & LTO3.
>  
> LTO = Read 2 versions Back, Write 1 version Back.
>  
> -Jonathan
>
> ________________________________
>
> From: veritas-bu-bounces AT mailman.eng.auburn DOT edu on behalf of Jon 
> Bousselot
> Sent: Wed 2/18/2009 2:26 PM
> To: veritas-bu AT mailman.eng.auburn DOT edu
> Subject: [Veritas-bu] block size for restore
>
>
>
> This one has me stumped.
> Windows 2003 with all the latest patches.
> Media written since 2003 shows up in the bpimagelist -L as having a
> media block size of 65536.
>
> Upgrade to 6.5.3
> SIZE_DATA_BUFFERS must now be 32768 because if it is anything else, I
> get media write errors.
>
> When I try and restore data, the bptm logs show this
>
>
> 2/17/2009 1:46:05 PM - Error bptm(pid=1996) tapemark or blank tape
> encountered reading media header, drive index 1 
> 2/17/2009 1:46:06 PM - Error bptm(pid=1996) The tape device at index 1
> has a maximum block size of 32768 bytes, a buffer size of 65536 cannot
> be used
> 2/17/2009 1:46:06 PM - Error bptm(pid=512) The following files/folders
> were not restored:      
>
>
> I cannot read the old LTO-1 tapes.  They were stored at Iron Mountain
> safely, and I tried more than three tapes from various years.
> I verified the hotfix numbers for tape.sys and even tried updated tape
> drive drivers with no success.
>
> NB docs (perf tuning guide) say the SIZE_DATA_BUFFERS is not even used
> during a restore operation.
> Is there a registry key that is forcing the drive to only accept 32k
> blocks?
> The LTO-4 drive is working just fine even at the 32k block size.
>
> -Jon Bousselot
> _______________________________________________
> Veritas-bu maillist  -  Veritas-bu AT mailman.eng.auburn DOT edu
> http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
>
>
>   
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