After seven months and two weeks of uptime our Raspberry Pi mirror server fell over yesterday and required a power cycle to bring it back up. It lasted longer than it’s first USB hard disk which failed after about six months. Examining the logs suggests that the flash card is dying, yesterday it remounted read only and the network stack fell over. /var/log is on the external USB drive so we were able to see that the machine was alive, it could log ethernet connect/disconnect, it just couldn’t start the network back up.
During the time it was up it shipped about 1.5TB of downloads running an average of 3Mbps of traffic, quite regularly peaking at 10Mbps+.