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In the article it is not clear where the partitions "live" ?
There are 6 partitions: from boot-fs (md0) to bulk-data-fs (md6).
It looks like all the partitions are on the HDD ?? Shouldn't some of the partitions be on the SSD (like /) and other on the HDD (like /swap, /home and /work-data) ?

Dor
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  • The article you linked is for raid disks under Linux and requires extensive knowledge of mdadm and mdraid... It's not for the faint of heart and a little off topic for AskUbuntu I believe. None-the-less here is some more detailed information on raid setup: [mdraid overview](https://www.thomas-krenn.com/en/wiki/Linux_Software_RAID) – WinEunuuchs2Unix Aug 21 '16 at 23:16
  • The article that you refer to is extremely terse, and if you're not using RAID, it'll be easy to get confused. In answer to your question... **IN GENERAL**, in a 2 disk environment, one small SSD and one large HDD, you put root (/) on the SSD, and /home, /swap on the HDD. Of course, if the SSD is large enough, put everything but /swap on the SSD. If you need more clarification, please be more specific about what you actually want to do IN YOUR ENVIRONMENT. Cheers, Al – heynnema Aug 21 '16 at 23:41
  • See these: http://askubuntu.com/questions/743095/how-to-prepare-a-disk-on-an-efi-based-pc-for-ubuntu and: http://askubuntu.com/questions/336439/any-problems-with-this-partition-scheme and: http://askubuntu.com/questions/461394/how-to-partition-ssdhdd and: https://help.ubuntu.com/community/DiskSpace – oldfred Aug 22 '16 at 00:21

1 Answers1

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  • /boot (md0) is on SSD and iHDD and eHDD (via RAID 1)
  • / (md1) is on SSD and iHDD and eHDD (via RAID 1)
  • /var (md2) is on iHDD and eHDD (via RAID 1)
  • /swap (md3) is on iHDD and eHDD (via RAID 1)
  • /home (md4) is on SSD and iHDD and eHDD (via RAID 1)
  • /mnt/work-data (md5) is on SSD and iHDD and eHDD (via RAID 1)
  • /mnt/bulk-data (md6) is on iHDD and eHDD (via RAID 1)

So:

  1. internal SSD as SSD = /boot (md0) + / (md1) + /home (md4) + /mnt/work-data (md5)
  2. internal HDD as iHDD = /var (md2) + /swap (md3) + /mnt/bulk-data (md6) + RAID 1 of [/boot, /, /home] (md10) + RAID 1 of [/mnt/work-data] (md50)
  3. external HDD as eHDD = RAID 1 of [/var, /swap, /mnt/bulk-data] + RAID 1 of [/boot, /, /home] + RAID 1 of [/mnt/work-data]
StephR
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