A question for the community- Is there a way to monitor disk usage in real time *without* a disk read? Here's the situation: Company managers have dumped large files onto the production server in the course of a single business day. The server has no capacity problem, but the backup system chokes and we lose our backup. The managers have no idea of the size file they are putting on the server, and they tend to do so in batches, which means that there is no 'incremental' buildup to watch over the course of a couple of days. It happens all at once, probably within the space of a few minutes. I can catch the problem with a simple 'df -h' toward the end of the day, but if I see there's a problem for the backup there still is no way to find the problem directory unless I do a disk read with one of the many commands available. I can reduce the scope of the search, but the narrowest scope would still leave me with scores of gigabytes and hundreds of thousands of files. This would coincide with peak server activity, and even if I re-nice the disk read, I would still slow down the company for up to an hour at a critical time of day. What I need is some sort of disk usage accounting that 1) does not rely on a real-time disk read; 2) can locate data growth by file and directory. Is there anything out there that fills the bill? John Reese