HH0718 Posted August 28, 2019 Share Posted August 28, 2019 (edited) I am beginning to properly setup unraid and expand the hard drives and explaining to my wife how unraid works as a redundant system to avoid losing data. Something she brought up caught me off guard and am curious to find the answer but google has not been friendly to my search. In the event of an emergency like a flood or fire, would I be able to take x number of drives from the hot swap bay and avoid losing data? Setup, 2 X 12TB parity drives 14 x 12TB Array Drives 2 x 1TB cache SSDs Something tells me no... but I'd love to hear it from the experts. Edited August 28, 2019 by HH0718 Question answered by community. Quote Link to comment
JorgeB Posted August 28, 2019 Share Posted August 28, 2019 Any data drive you take can be read completely, since Unraid uses an independent filesystem for each array device, to not lose any data you need all drives minus any 2 (plus one cache device for cache data assuming it's raid1). Quote Link to comment
Squid Posted August 28, 2019 Share Posted August 28, 2019 You would have to take all of them except for 2 in order to guarantee no loss of dataSent from my NSA monitored device Quote Link to comment
HH0718 Posted August 28, 2019 Author Share Posted August 28, 2019 3 minutes ago, johnnie.black said: Any data drive you take can be read completely, since Unraid uses an independent filesystem for each array device, to not lose any data you need all drives minus any 2 (plus one cache device for cache data assuming it's raid1). So, is that any hard drive minus two (including parity drives) or just the data drives and one cache drive? Quote Link to comment
JorgeB Posted August 28, 2019 Share Posted August 28, 2019 1 minute ago, HH0718 said: is that any hard drive minus two (including parity drives) this for the array data and one cache device if there's needed data there. Quote Link to comment
dgreig Posted August 28, 2019 Share Posted August 28, 2019 You'd need 10 data 2 parity and your cache drive (assuming its raid 1) to not lose any data. If you lost your parity you would only lose the data from and missing data drives. eg no party and 9 data and a cache means you lose the data that is on the missing data drives. Hope this helps you. Quote Link to comment
HH0718 Posted August 28, 2019 Author Share Posted August 28, 2019 Thank you all for your responses. Quote Link to comment
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