Today power disappeared in a large area, including where my company is. The UPS pulled the entire system for 5 minutes, then I got news it was going to last a while, so I shut down all servers (workstations were down anyways). Everything seemed normal, power got back, and I started the servers. Maximum mount count reached... and then the server started fsck'ing 1.4 TB of disks, made up of 300, 200 and 120Gb RAID0's. After 3 hours everything was up and running again (could have saved half an hour if I didn't have other servers to tend to). I run Ext2fs on all disks. I've been warned that fsck times will be 4-5 hours per disk with so large partitions, but actually my server with a DAC960 and an AccelRAID 250 (PII 450Mhz, 512Mb RAM) finished very fast. I don't know what would have happened if I had corrupted data, maybe things would have taken quite a bit longer. The moral is: I love UPS'es, backup isn't only for chickenshits, and Linux Rules! Kent Nilsen
