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Tips for Increasing Server Availability?
uptime asks: "I've got a friend that needs some help with his web server availability. On two separate occasions, his server has had a problem that caused it to be unavailable for a period of time. One was early on and was probably preventable, but this latest one was due to two drives failing simultaneously in a RAID5 array. As a web business moves from a small site to a fairly busy one, availability and reliability becomes not only more important, but more difficult to accomplish it seems. Hardware gets bigger, services get more expensive, and options seem to multiply. Where could one find material on recommended strategies for increasing server availability? Anything related to equipment, configurations, software, or techniques would be appreciated."
if you are moving to a level that you need uptime, but cant dedicate more resources to overseeing it - you may want to considering a hosted solution. They host, monitor, upgrade, do checkups (YMMV with whom you choose)
If that isnt something you want to venture down, then start planning outages for fsck, upgrade, and standard checkups. There are alos plugins for NAGIOS that will check different RAID controller status, server response, and server load
That is all...
Good judgement comes from experience, and experience comes from bad judgement.
- W. Wriston, former Citibank CEO
6) The drives are overheating. This happened to my two Seagate 200Gb drives. Had to mount them in a heatsink, the normal bay does not provide adequate cooling for Seagate's 7200 rpm drives.