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Limiting host node IO access?
Hello,
As many of you might know writing data to a harddisk will decrease its lifetime, after a X-amount of writes it will die.
This makes me wonder if providers have measures in place to prevent people from killing the node harddisks. If yes, what kind of measures? if I were a provider I really would want to prevent that people kill my expensive hardware equipment.. How could I accomplish this? limiting the IO writespeed isn't going to be enough.
Thank you.
Comments
I've seen it possible to limit the i/o rate.. if that's what you are asking.
You can limit IOPs and throughput, but I'm not aware of anything out-of-the-box to limit the amount (total) of data written.
Assuming you're using SSDs (as you referred to your equipment being killed) SSDs will die with usage, that's just a reality. You need to figure replacing them every year or so (depending on usage and class of SSDs) into your business plan.
Best of all replace one of your RAID member SSD drives every 3-6 months or whatever is needed to make sure that (assuming you're using all new to start) your SSDs don't wear down at the same rate and die at the same time.
We use iolimit iopslimit. I must say it helps a lot.
http://openvz.livejournal.com/45831.html
We are in low end market, we need to protect ourselves and other clients from abusers.
This might be something @GreenValueHost might be interested in, May help with all those abusers / torrents taking all the I/O ?