I am archiving a vast amount of media files that are rarely accessed. I’m writing large sequential files, at peaks of about 100MB/s.

I want to maximise storage space primarily; I have 20x 18TB HDDs.

I’ve been told that large (e.g. 20 disk) vdevs are bad because resilvers will take a very long time, which creates higher risk of pool failure. How bad of an idea is this?

    • Sertisy@alien.topBEnglish
      1·
      10 months ago

      Draid was released just a month after I built my last raid set with vdevs. Really hoping there’s an in-place migration path someday, assuming nobody finds any bugs in the next couple years.

    • xxbiohazrdxx@alien.topBEnglish
      1·
      10 months ago

      Draid removes the capability of variable stripe widths, however. Strongly recommend a special metadata device when doing draid with the same level of redundancy as the rest of the pool.

      • zrgardne@alien.topBEnglish
        1·
        10 months ago

        If you have lots of small files, yes this is bad.

        For videos the space lost will just be a rounding loss.

        Would be interesting to test for music. A 100k 20mbyte files. You could lose a lot of space if using 1 mbyte+ stripes that have been recommended for a while now.