On Fri, Sep 04, 2009 at 01:41:15PM -0700, Richard Elling wrote: > On Sep 4, 2009, at 12:23 PM, Len Zaifman wrote: > >We have groups generating terabytes a day of image data from lab > >instruments and saving them to an X4500. > > Wouldn't it be easier to compress at the application, or between the > application and the archiving file system?
Especially when it comes to reading the images back! ZFS compression is transparent. You can't write uncompressed data then read back compressed data. And compression is at the block level, not for the whole file, so even if you could read it back compressed, it wouldn't be in a useful format. Most people want to transfer data compressed, particularly images. So compressing at the application level in this case seems best to me. Nico -- _______________________________________________ zfs-discuss mailing list [email protected] http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
