Am 14.09.2013 11:29, schrieb Grant: >>>> It's time to switch hosts. I'm looking at the following: >>>> >>>> Dual Xeon E5-2690 >>>> 32GB RAM >>>> 4x SSD RAID10 >>> >>> If I make this 6x SSD RAID10 with redundant power supplies, what is my >>> weakest link as far as hardware? If a CPU craps out, will the system >>> keep running? >> >> Your weakest link is not having redundant power feeds. Two PSUs doesn't >> help much when they both draw power from the same place :-) > > At Soft Layer redundant power supplies are actually powered by > redundant power feeds. > >> Second is inadequate cooling in the data centre > > Easy to monitor though. >
True, it's easy to monitor. But that does not help you in case of cooling. I had that case once a few years back in july. Air condition _and_ backup air condition fell out in the offsite data center where we had some server. I still have the munin image from that day. Almost 70° c hot hard drives are not a pretty sight :-) And there's nothing you can do, except shutting down the server and wait until the refrigeration engineers have fixed the air conditioning.
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