I've also heard that once you've used LTO2 media in an LTO3 drive, you
can't then read it in an LTO2 drive.  Not sure where I got this from
though.
 
I've also got some new LTO3 drives having asked for LTO2...so far they
seem to be running slower than the LTO2s as I can't supply data to them
fast enough :-(... time to play with mpx and buffer sizes...
 
Phil Weber 
Business Technology (Egg) 
Storage Technical Services - Senior UNIX Technologist 

-----Original Message-----
From: veritas-bu-bounces at mailman.eng.auburn.edu
[mailto:veritas-bu-bounces at mailman.eng.auburn.edu] On Behalf Of Wessam
Aly
Sent: 19 December 2006 17:04
To: Dave Brown
Cc: veritas-bu at mailman.eng.auburn.edu
Subject: Re: [Veritas-bu] LTO3 Read/Write LTO2


Dave.. AFAIK, LTO3 will surely read LTO2 and LTO1 tapes no problem. but
it is not recommended to write with an LTO3 drive on an LTO2 tape. The
densities do make a difference in operation.
 
Some manufacturers also do not officially support it, but either way,
technically you should be able to read/write LTO2 tape with an LTO3
drive, but you'll be limited to the normal LTO2 capacity.
 
Regards,
 
Wessam Aly 
Senior UNIX & Storage Systems Admin. 
HPUX-CSA Certified Systems Administrator 

 

  _____  

From: Dave Brown [mailto:dbrown at worknetinc.com] 
Sent: Tuesday, 19 December, 2006 16:29
To: veritas-bu at mailman.eng.auburn.edu
Subject: [Veritas-bu] LTO3 Read/Write LTO2


Well,  My boss just got me a new LTO3 drive to put in my library.  I
asked for an LTO2 as I already have 2 of these in the lib and 100's of
tapes but I have one nonetheless

The lib sees the drive as does NetBackup but it says that there are no
tapes available...barcode reader I'm sure.  

Is there a way to make the LTO3 use the LTO2 tapes and write to them at
the proper density ?

I tried changing the type to hcart2 as my others are but it did not
take.  I may have to restart services but have to wait for some jobs to
finish.  Figured I'd throw it up to the group while I wait.

NetBackup 6.0 MP4
Windows 2003
Quantum 1500 lib
 
 
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