Hi, 

1. - Format 3592C/drive uses drive compression: show libr ( if you want to 
check 
it )
2.-Compressed files are not compressed twice




----- Mensaje original ----
De: Mehdi Salehi <ezzobad AT GOOGLEMAIL DOT COM>
Para: ADSM-L AT VM.MARIST DOT EDU
Enviado: mié,7 julio, 2010 13:36
Asunto: when TSM uses tape compression?

Hi,
The format of a device class is set to "drive" and "query drive" shows the
read and write format is "3592C,3592". The question is when does TSM uses
the compressed format? In a TSM 5.3 system, almost all volumes are 300GB (q
vol) except one of them. I cannot explain why TSM have not treated this one
like other volumes while cartridges are of the same type.

Thanks