Bug #5729

Functionality to create/expand to 3+ mirrored vdevs in GUI

Added by Chase Farrant over 6 years ago. Updated about 6 years ago.

Closed: Not Applicable
Nice to have
Josh Paetzel
GUI (new)
Target version:
Reason for Closing:
Reason for Blocked:
Needs QA:
Needs Doc:
Needs Merging:
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Support Suite Ticket:
Hardware Configuration:
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Would be nice for those who like the extra fault protection of having multiple mirrors.


#1 Updated by Jordan Hubbard over 6 years ago

  • Status changed from Unscreened to Closed: User Config Issue

You can already create mirror pairs in the GUI for more redundancy. For example, with 4 drives simply drag the selection in the volume manager out to include 2 drives and then down. You can't have more than 2 drives in a mirror since that's not a mirror, if that's what you're asking for.

#2 Updated by Josh Paetzel over 6 years ago

  • Category set to 2
  • Status changed from Closed: User Config Issue to Screened
  • Assignee set to Josh Paetzel
  • Target version set to 9.3-M3
  • Seen in changed from to

In ZFS land you can have N-way mirrors.
We could expose that to the volume manager....and maybe we already do, I'd have to check...however one thing we don't support in the GUI at all is the ability to attach a drive to a single drive vdev creating a two drive mirror vdev. (or attaching a drive to a N-drive mirror vdev, creating an N+1 mirror vdev) I believe there's already a ticket tracking this (filed by Sean)

#3 Updated by Cyber Jock over 6 years ago


You can have as many mirrors as you want. I've had quite a few FreeNAS customers that I consulted with that went with 3-way mirrors (and one that did 4 way mirrors!) This is one of the reasons why I hate the phrase "RAID-10" with regards to mirrors because AFAIK no RAID hardware can do 3-way mirrors in the same way that ZFS does.

Edit: and Josh beat me to the post. Oh well.

#4 Updated by Jordan Hubbard over 6 years ago

BRB: I stand corrected! Not sure about the Target version on this one yet, but I'll leave it in M3 for the time being. It doesn't seem to be killing us not to have this.

#5 Updated by Josh Paetzel about 6 years ago

  • Status changed from Screened to Closed: Not Applicable

The GUI supports making N-way mirrors currently.

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