SwampRabbit
Explorer
- Joined
- Apr 25, 2014
- Messages
- 61
I have finally gotten around to working on my new FreeNAS server again, tired of it collecting dust due to work getting in the way.
And I am curious about something I noticed while creating volumes with 9.3.
I have two M1115s, one with 8 drives on it, and another with 4 drives.
da0-da07 on the first and da08-da11 on the second.
I created a single zpool consisting of two RAIDZ2 vdevs using the Volume Creation Wizard, named the pool and selected "Automatic - Pick reasonable defaults for available drives".
Doing it this way, it seems to not use contiguous blocks of disks for the vdevs.
It does not seem to be ordering the drives in any sort of logical order or splitting the drives up in any sort of order between the controllers.
Attached is what shows up under "Volume Status".
Using the Volume Manager I replicated the same thing, but selected 6 drives across, and two rows down. This gives me the same expected setup but orders the drives da0-da5 for one, and da6-da11 for the other.
I am under the impression that both methods probably do not make a difference, other than the one keeps the drives in sequential order, but I want to make sure I am creating them in the best possible way.
So my question is:
Does the Volume Creation Wizard check something behind the scenes to create the volumes in this sort of fashion that is better than me selecting the drives in the Volume Manager?
Thanks
And I am curious about something I noticed while creating volumes with 9.3.
I have two M1115s, one with 8 drives on it, and another with 4 drives.
da0-da07 on the first and da08-da11 on the second.
I created a single zpool consisting of two RAIDZ2 vdevs using the Volume Creation Wizard, named the pool and selected "Automatic - Pick reasonable defaults for available drives".
Doing it this way, it seems to not use contiguous blocks of disks for the vdevs.
It does not seem to be ordering the drives in any sort of logical order or splitting the drives up in any sort of order between the controllers.
Attached is what shows up under "Volume Status".
Using the Volume Manager I replicated the same thing, but selected 6 drives across, and two rows down. This gives me the same expected setup but orders the drives da0-da5 for one, and da6-da11 for the other.
I am under the impression that both methods probably do not make a difference, other than the one keeps the drives in sequential order, but I want to make sure I am creating them in the best possible way.
So my question is:
Does the Volume Creation Wizard check something behind the scenes to create the volumes in this sort of fashion that is better than me selecting the drives in the Volume Manager?
Thanks