ADSM-L

Re: Virtual tape libraries

2005-05-20 13:37:39
Subject: Re: Virtual tape libraries
From: "Johnson, Milton" <milton.johnson AT CITIGROUP DOT COM>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Fri, 20 May 2005 09:00:33 -0400
 A 2 GB limit seems a bit restrictive, I wonder if that is a file system
limit on the VTL.  My VTL has no such restriction.  When I installed my
VTL I did not notice any change in TSM DB size due to an increase in the
number of volumes.  The amt of data per volume seems minimal.


H. Milton Johnson
 
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Jon Evans
Sent: Friday, May 20, 2005 5:02 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Virtual tape libraries

I have been experimenting with a virtual tape library connected to TSM
(Windows 2k3 5.1.6.3 server)

 

All seems to work perfectly and TSM is none the wiser. However, The
maximum cartridge size in this virtual library is 2GB. I am currently
using LTO1 and getting upto 100 times this amount of data on one tape.

My database is 56GB and I currently have approx 600 volumes

 

My question is.. if I were to move to a virtual library and had to
increase the number of my volumes by up to 10 times

What impact would this have on my database ?

 

Thanks in advance

 

Jon Evans

Storage Consultant

KBR

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