Mark,

No idea about TSM's LANFREE being a limited use copy of Sanergy.  My
understanding was that the big difference was in the client code so that
the meta data goes over the LAN to the TSM server's DB and the actual
backup data goes across the SAN directly to the SAN attached tape drive
with the TSM server still controlling the tape drive access.  I assumed
this was just a case of the TSM server telling the client which tape
drive to use and then the client sends the data to the SAN attached tape
drive in the same manner the TSM server normally sends data to a SAN
attached tape drive.  When the client completes the back-up, it informs
the TSM server and the server knows that the tape drive is now free for
other usage.

During IBM's presentation on tapeless back-ups they said that if you
where going the route of DASD storage using a FILE device class stgpool,
you would need the full blown Sanergy application to do a LANFREE
back-up.  I would assume that this meant at least two copies of Sanergy,
one for the TSM server and one for the client.

For back-ups I would prefer to use the simplest method which would seem
to be TSM's LANFREE technology.  I do not want to have to worry about
compatible versions between two different products [TSM and Sanergy, not
mention the OS(s)] even when both of the products are from IBM.

H. Milton Johnson

 
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Mark D. Rodriguez
Sent: Wednesday, September 29, 2004 1:05 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: direct attached disk (DAS) at a tape library?

Milton,

Do you realize that the "TSM's LANFREE" technology you are refering to
is in fact Sanergy?  TSM just gives you a limited use copy of Sanergy
when yuo turn on the LANFREE stuff.  That was why I questioned how you
were going to do LANFREE without Sanergy.

That clears that up.  Thanks.

Johnson, Milton wrote:

> A virtual tape library operates and connects just like a physical tape

>library in a SAN environment.  The VTL, TSM server and your client are 
>connected to the SAN so a LANFREE back-up works using TSM's LANFREE 
>technology.  Since the topology is conventional you should also be able

>to add a SAN Data Gateway and do a "server free backup".  The key is 
>that a VTL is just a conventional fiber connected library with really 
>fast robotics and drives. Yes, you do need to make sure that the VTL 
>plays nice with TSM, so make sure your choice in VTL is TSM certified.
>
>H. Milton Johnson
>
>
>-----Original Message-----
>From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf 
>Of Mark D. Rodriguez
>Sent: Tuesday, September 28, 2004 10:43 PM
>To: ADSM-L AT VM.MARIST DOT EDU
>Subject: Re: direct attached disk (DAS) at a tape library?
>
>Johnson, Milton wrote:
>
>
>
>>I am not quite sure what you meant by "with TSM you can use disk only 
>>for backups instead of onsite tape".  I do not see any reason why you 
>>can not use FILE device types for both primary and copypool stg pools.
>>Of course if you actually want to move a copy of the data offsite, 
>>then
>>
>>
>
>
>
>>you would need some type of removable media such as tape.
>>
>>For me two of the attractions of a virtual tape library are being able

>>to do lanfree backups without using Sanergy, and having the VTL do 
>>compression.
>>
>>
>>H. Milton Johnson
>>
>>
>>
>>
>>
>Hi Milton,
>
>I am not sure how you get to do Lan-Free without using Sanergy.  In 
>order to do that wouldn't the VTL have to have some kind of similar 
>code as Sanergy and then the question is does that play nicely with 
>TSM.  Or am I missing something really obvious here?  Please explain 
>how you will get Lan-Free to work in a TSM environment without the
Sanergy code.
>
>Thank You.
>
>--
>Regards,
>Mark D. Rodriguez
>President MDR Consulting, Inc.
>
>=======================================================================
>=
>=======
>MDR Consulting
>The very best in Technical Training and Consulting.
>IBM Advanced Business Partner
>SAIR Linux and GNU Authorized Center for Education IBM Certified 
>Advanced Technical Expert, CATE AIX Support and Performance Tuning, 
>RS6000 SP, TSM/ADSM and Linux Red Hat Certified Engineer, RHCE 
>=======================================================================
>=
>=======
>
>
>

--
Regards,
Mark D. Rodriguez
President MDR Consulting, Inc.

========================================================================
=======
MDR Consulting
The very best in Technical Training and Consulting.
IBM Advanced Business Partner
SAIR Linux and GNU Authorized Center for Education IBM Certified
Advanced Technical Expert, CATE AIX Support and Performance Tuning,
RS6000 SP, TSM/ADSM and Linux Red Hat Certified Engineer, RHCE
========================================================================
=======