On Tue, Jul 19, 2005 at 01:24:29PM -0500, Charles Ballowe wrote:
> The problem I had with flash backups was that the backup image is the
> size of the filesystem, not just the used size of the filesystem. The
> place where I expected the biggest gains from it was on large windows
> file servers. Unfortunately, these were recently migrated with plans
> for growth and at the time of my testing, 300GB of data on a 900GB
> filesystem - backups running at double the speed was nice, but still
> took longer - and not worth chewing the tape for. I may switch back to
> flashbackup if those filesystems are ever aproaching 80% full.
Why would you chew through 900GB of tape? Most tape drives will
compress that to nothing anyway. If you're staging to DSSU it could be
an issue. I don't know if 6.0 addresses this or not.
.../Ed
--
Ed Wilts, Mounds View, MN, USA
mailto:ewilts AT ewilts DOT org
|