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Thread: raid status on vps
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08-23-2011, 11:18 PM #1Junior Guru Wannabe
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raid status on vps
how can you find out the raid status on a vps through commandline?
on my xen vps, the file in /proc/mdstat shows:
Personalities :
unused devices: <none>
Does this mean there is no raid installed on this vps?
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08-23-2011, 11:31 PM #2Poooooonnyyy :*
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it means you can't access that far outside of the node.
mdadm software raid only anyways
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08-24-2011, 03:36 AM #3Junior Guru Wannabe
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thanks for the response
so if a vps provider tells me that the machine is on raid10, I should just take their word for it?...
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08-24-2011, 03:56 AM #4Poooooonnyyy :*
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Well, you can tell by the IO performance usually.
While a lot of people don't like the dd tests, it does tell you what the raw bandwidth possible is (assuming it isn't hellishly oversold).
If you're seeing 70 - 90MB/sec - it could be a RAID1, if you're more like 130 - 150MB/sec, then it's likely a raid10
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08-24-2011, 06:31 AM #5Junior Guru Wannabe
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did a dd test with 1 gb file
- write speed is about 140mb/s
- read speed is roughly 70mb/s
looks like it is a raid10
thank you for your help!
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