im running multiple parity discs and i have placed my cntent files on them but not on the data discs. is there a reason for me to have to also place them on my data discs? So right now I have content files on my OS disc and 3 parity discs
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m sorry, my question should have been, is there a reason for me to have more than the 4 content files i currently have? I see some people putting them on all their data discs is why i ask.
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The "content" file is stored in multiple copies, and each one must be in a different disk, to ensure that in even in case of multiple disk failures at least one copy is available.
Having a total of 4 copies of the content file is perfectly fine in your setup. If you lose all parity disks and your OS disk snapraid won't be able to restore anything and you won't have any need for a content file.
Last edit: Leifi Plomeros 2019-06-21
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it just depends on the number 'n' of parity discs, since you can recover from 'n' failing discs (either parity or data) without data loss. This means, that you will need at least 'n+1' copy of the content file on different discs (since 'n' copies may have been liost due to failing discs).
Due to there is some space overhead on the parity discs, it is adviced to use only data discs for content files.
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im running multiple parity discs and i have placed my cntent files on them but not on the data discs. is there a reason for me to have to also place them on my data discs? So right now I have content files on my OS disc and 3 parity discs
Using space on parity disks for content file compounds the waste effect.
Using space on data disks for content files has opposite effect.
You can read more about it in chapter 7.8 here: https://www.snapraid.it/manual
m sorry, my question should have been, is there a reason for me to have more than the 4 content files i currently have? I see some people putting them on all their data discs is why i ask.
The "content" file is stored in multiple copies, and each one must be in a different disk, to ensure that in even in case of multiple disk failures at least one copy is available.
Having a total of 4 copies of the content file is perfectly fine in your setup. If you lose all parity disks and your OS disk snapraid won't be able to restore anything and you won't have any need for a content file.
Last edit: Leifi Plomeros 2019-06-21
in what setup would only 4 content files not be fine in your oppinion? 5, 10, 50 data discs?
it just depends on the number 'n' of parity discs, since you can recover from 'n' failing discs (either parity or data) without data loss. This means, that you will need at least 'n+1' copy of the content file on different discs (since 'n' copies may have been liost due to failing discs).
Due to there is some space overhead on the parity discs, it is adviced to use only data discs for content files.