Because there's software in the VTL that emulates tape drives. To TSM it's
just another tape library.

Curtis

curtis.stewart AT lawson DOT com



"Mark D. Rodriguez" <mark AT MDRCONSULT DOT COM>
Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
09/28/2004 10:43 PM
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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.

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