On 30/11/12 10:13, steve-ALUG@hst.me.uk wrote:
I can't comment on the backup corruption, but if it's a file server, and a backup server, then I suggest an uninterpretable power supply (UPS). I'm sure you'll be able to pick one up on ebay without breaking the bank. Change the batteries at least every 2 years, yearly if you can afford it. APC is a good make, and with that, you can install APCUPSD (APC UPS Daemon) which will safely shutdown the PC a configurable time after a power failure. It should be able to supply power to your external raid too if required.
We do already have a UPS although I'm not sure it's suitably sized - that's one of the things on my list. I'm pretty sure it's not currently being monitored (historic reasons - the kit that used to monitor it has now gone) which makes it only slightly better than no UPS at all, and I am sure it needs new batteries. Up until now it wasn't powering anything that mattered so that wasn't a big deal.
Assuming I can get to a point where the UPS will keep the server running for a few minutes, and notify it to shut down, then is write caching on the external RAID array "safe"?
Mark Rogers