The money are in tapes, expected life of the drive, less errors (especialy 
restore erors) and availability.
Pro:
Tapes for 9940 cost less then for LTO2 and you use the same tape in 9940A 
and 9940B
Expected life of 9940B is longer then LTO2 drives
Error rate on 9940B are much lower then LTO2 drives (and restoreerors cost 
a lot)
9940B has less downtime then LTO2 (comparing 9940B to IBM LTO2, Others have 
even more downtime)
Installations tend to need fewer drives when using 9940B then LTO2. (and 
also less licencies for NBU)
9940B tend to compress better and faster the IBM LTO2
9940B tend to be faster the LTO2 (at least in real life)
Con:
9940B cost more then IBM LTO2 (but last longet)

/johnny



At 20:16 04-09-2003 -0700, Steve Curry wrote:
>AIT4 and SAIT are two completely different formats.  AIT has a continuing
>roadmap to AIT6+, meaning AIT4 and future versions will also be 8mm.  SAIT
>is 1/2" and the next version will be SAIT2.  Just wanted to make sure there
>wasn't confusion, AIT4 and SAIT are *not* the same. :)
>
>I'm curious how 9940B will save money over LTO2?  I believe both are the
>same capacity (200GB native) and both come with support so if there is a
>failure it will be replaced.  What am I missing. :)  Also the LTO's I have
>are native FC and run 24 hours a day, we have had very few issues.
>
>My 2 cents...
>
>Steve Curry
>Storage Ops
>Yahoo! Inc.
>http://www.yahoo.com
>
>
>-----Original Message-----
>From: veritas-bu-admin AT mailman.eng.auburn DOT edu
>[mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu]On Behalf Of Jimh
>Sent: Thursday, September 04, 2003 5:48 PM
>To: 'Johnny Oestergaard'; 'Gautier LEBLANC'; 'Li, Jackie (Yanhui)';
>veritas-bu AT mailman.eng.auburn DOT edu
>Subject: RE: RE : [Veritas-bu] LTO generation 2
>
>
>AIT-3 are 8mm tapes and not compatible with anything but AIT libraries.
>
>AIT-4 or SAIT are suppose to be 1/2" (not sure if they're available yet)
>I heard(the drives) they are a little larger than DLT drives so they may
>or maynot work with StorageTek.
>
>-----Original Message-----
>From: veritas-bu-admin AT mailman.eng.auburn DOT edu
>[mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu] On Behalf Of Johnny
>Oestergaard
>Sent: Thursday, September 04, 2003 4:07 PM
>To: Gautier LEBLANC; 'Li, Jackie (Yanhui)';
>veritas-bu AT mailman.eng.auburn DOT edu
>Subject: RE : [Veritas-bu] LTO generation 2
>
>
>I don't know anything about the AIT-3 drives, but I don't think they can
>be
>used in a L700 library.
>
>And I think that people that use 9940B wouldn't trade them for any other
>
>drive. They are rock solid and stable. Haven't had a restore error on
>them
>(or the 9940A) and we have used them since they came to the market.
>
>But they cost more then a LTO2 drives. At least "up front". In the long
>run
>the 9940B will save you money over the LTO2 drives.
>And if you have large tapepools I know of installations that even ended
>up
>paying less for a 9940B solution compared to LTO2 based only on the
>initial
>investment.
>
>And if you are planning to had your tapedrives running 24 hours a day
>LTO2
>(and all other drives except 9840 and 3590) will take that kind of load
>in
>the long run.
>
>Another great thing about the 9940B's (and also 9840B's) are that you
>can
>get them in native FC versions. No SCSI to FC bridge.
>
>/johnny
>
>
>
>At 20:34 04-09-2003 +0200, Gautier LEBLANC wrote:
> >Hi,
> >
> >Waht do you think about AIT-3 ?
> >
> >thanks
> >
> > > -----Message d'origine-----
> > > De : veritas-bu-admin AT mailman.eng.auburn DOT edu
> > > [mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu] De la part de
> > > Johnny Oestergaard Envoyé : jeudi 4 septembre 2003 19:07
> > > À : Li, Jackie (Yanhui); veritas-bu AT mailman.eng.auburn DOT edu
> > > Objet : Re: [Veritas-bu] LTO generation 2
> > >
> > >
> > > I think it's a good combination.
> > > I would say that IBM LTO2 is the second best tapedrive you can get,
> > > if what you need is high capacity (I would say that 9940B's are the
> > > best drives)
> > >
> > > /johnny
> > >
> > > At 09:32 04-09-2003 -0700, Li, Jackie (Yanhui) wrote:
> > >
> > > >We are planning to buy STK L700 with IBM Fiber Channel LTO
> > > generation 2
> > > >tape drive, I would like to hear your opinion about the LTO 2 tape
> > > >drive.
> > > >
> > > >Thanks
> > > >Jackie
> > > >
> > > >
> > > >
> > > >_______________________________________________
> > > >Veritas-bu maillist  -  Veritas-bu AT mailman.eng.auburn DOT edu
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> > >
> > > _______________________________________________
> > > Veritas-bu maillist  -  Veritas-bu AT mailman.eng.auburn DOT edu
> > > http://mailman.eng.auburn.edu/mailman/listinfo> /veritas-bu
> > >
> > >
> > > ____________________________________________________________________
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>
>
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