Virginia,
Actually, I saw the increase in reclaim times when we moved from 3490 to DLT
(which is a 35 GB tape.)

And yes, I had to make changes.  With 3490 I let reclamations occur pretty
much on demand.  With DLT I found reclamation could run for hours on a
single tape.  What I ended up doing was rescheduling the reclamations for
the weekend, instead of letting them occur daily.

Now with the 9840's, my reclaims are faster than with DLT, because the mount
times are so much shorter.   I checked and the last 3 reclaims that ran (my
reclaim% is set to 75) took 50 minutes, 30 minutes, and 55 minutes, on a
Saturday, when the server had nothing else to do.    Your results will vary
depending on a lot of things, such as whether your pool was originally
collocated or not.

Wanda Prather



> -----Original Message-----
> From: Virginia Hysock [SMTP:vhysock AT CSC DOT COM]
> Sent: Thursday, March 23, 2000 12:48 PM
> To:   ADSM-L AT VM.MARIST DOT EDU
> Subject:      STK 9840 and TSM 3.7
>
> Thanks to everyone for your responses on this.  It sounds like you are all
> running
> an AIX server with ACSLS controlling your library.  Anyone out there using
> 9840's with
> TSM and/or HSM on an MVS OS/390 mainframe?
>
> Any issues with HSM recycle of 9840's still out there?
>
> Wanda, when you state that TSM reclamation of a tape takes longer due to
> the
> increased amount of data - like how much longer?  Did you change your
> reclamation parameters/percentages at all when you moved to 9840 (e.g. do
> you wait until the percentage of reclaimable tape is higher, etc.)?
>
>
>
>
>
> From:       Prather, Wanda <Wanda.Prather AT JHUAPL DOT EDU>
>
> Same here, ACSLS 5.3.2, 9840's, AIX 3.7.2.
>
> No problems at all (other than 2 errors on a drive that were fixed with a
> microcode upgrade).
>
> Seek times are terrific; mount/seek/reclamation times all much better than
> with DLT.
>
> If you are converting from 3490 tape, you will probably find that seek
> times
> are as good, reclamation will run longer just because the 9840 can hold so
> many more files.  Only gotcha that I know of, when we converted to
> high-capacity tapes I had to increase the size of the recovery log because
> the reclamation processes were running a lot longer.  I suggest just
> keeping
> an eye on your log size....
>
> ************************************************************************
> Wanda Prather
> The Johns Hopkins Applied Physics Lab
> 443-778-8769
> wanda_prather AT jhuapl DOT edu
>
> "Intelligence has much less practical application than you'd think" -
> Scott Adams/Dilbert
> ************************************************************************
>
>
>
>
>
>
> > -----Original Message-----
> > From: Mark Owens [SMTP:Mark_Owens AT PRODIGY DOT NET]
> > Sent: Thursday, March 23, 2000 8:58 AM
> > To:   ADSM-L AT VM.MARIST DOT EDU
> > Subject:      Re: STK 9840 and TSM 3.7
> >
> > Hi All,
> >
> > I'm successfully using TSM Server/Aix 3.7.2 with acsls 5.3 and a STK9740
> > with 9840s.
> >
> > Virginia Hysock wrote:
> >
> > > Keith and Kyle,
> > >
> > >      What has been your experience with storage of TSM data on the
> > 9840's?  Any
> > > problems with reclamation times or seek times on restores?  Do you
> send
> > the 9840
> > > cartridges to the vault - and for how long?  We are considering this
> as
> > well,
> > > but I have concerns about the above.
> > >
> > >                          Thanks for any info,
> > >
> > >                          Ginny
> > >
> > > Date:    Wed, 22 Mar 2000 15:15:31 -0600
> > > From:    Keith Nelson <knelson AT OPENMIC DOT COM>
> > > Subject: Re: STK 9840 & TSM 3.7
> > > MIME-Version: 1.0
> > > Content-Type: text/plain; charset="iso-8859-1"
> > > Content-Transfer-Encoding: 7bit
> > >
> > > I don't know that a direct interface between TSM 3.7.X and LibStation
> > > exists. We do it with an external library manager providing the
> linkage.
> > >
> > > > -----Original Message-----
> > > > From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU]On 
> > > > Behalf
> > Of
> > > > Kyle Payne
> > > > Sent: Wednesday, March 22, 2000 2:54 PM
> > > > To: ADSM-L AT VM.MARIST DOT EDU
> > > > Subject: Re: STK 9840 & TSM 3.7
> > > >
> > > >
> > > > I don't know what STK library station is.  I am running TSM V3.7.2
> > with a
> > > > 9738 library that has 3 9840 tape drives in it with out any
> > > > problems.  There
> > > > was an issue with the microcode on the drives for the build 1.5
> drives
> > but
> > > > that was fixed a few weeks ago.
> > > >
> > > > Kyle
> > > >
> > > > -----Original Message-----
> > > > From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU]On 
> > > > Behalf
> > Of
> > > > Burton, Robert
> > > > Sent: Wednesday, March 22, 2000 1:14 PM
> > > > To: ADSM-L AT VM.MARIST DOT EDU
> > > > Subject: STK 9840 & TSM 3.7
> > > >
> > > >
> > > > We are going to be upgrading our adsm server to TSM 3.7 server
> > code....
> > > > We have STK 9840 drives and we are under the understanding that
> > > > STK library
> > > > station
> > > > will not operate with TSM 3.7
> > > >
> > > > Is there anybody out there that is running TSM 3.7 on a STK box
> > > > with library
> > > > station ?????
> > > > Are you experiencing any problems?????
> > > >
> > > >
> > > > thanks
> > > > Robert Burton
> > > > Open Systems Storage Analyst
> > > > Royal Bank of Canada
> > > > (416) 348-3849
> > > > Robert.Burton AT RoyalBank DOT com
> >
> > --
> > Mark Owens
> > Prodigy Communications Corporation
> > 1565 Front Street
> > Yorktown Heights, N.Y. 10598
> > 914 448 1912