Basically it depends on the types of data being compressed. Some will
compress well and others will not. 2:1 compression is a "rough"
estimate if, and only if, the data can be compressed enough.

If you've got 'that' much data that doesn't compress well, your only
option is to get a DDS4 or other type of backup drive or exclude stuff
that doesn't require daily backups.


-----Original Message-----
From: Shanoj [mailto:shanoj@crystalonnet.com]
Posted At: 23 June 2001 10:02
Posted To: english
Conversation: backup compression problem
Subject: backup compression problem



Hi


One of my client is using DDS3 DAT drive (24 GB in compression mode) The
compression type they are using is, Hardware [If available, otherwise
software]
But DAT comes out after coping of 17,832,39.. byte of data and their
total
size of data is 18 ~ 19 GB. I had tried all the compression type even
only
hardware, but it doesn't work. When the Dat capacity is if 24 GB
compression
then why it comes out after 17 GB when taking the backup of 19 GB data.
If any body facing the sililiar problem please give the reply