How to add mirrored disks to a single ISCSI Sharing device

[Todd Evans]

Sorry if this is easy info to find... but, not finding it.
On Freenas version 11.2... where do I alter this or change to one ZVOL or ISCSI extent as 1 single drive for HyperV VMs?
Thanks

 

[kdragon75]

where do I alter this or change to one ZVOL or ISCSI extent as 1 single drive for HyperV VMs?

Can you reword that for me? I'm not following what your trying to do or why.

 

[kdragon75]

Also, why do you have 4 pools with 2 drives each?!

 

[Chris Moore]

Sorry if this is easy info to find... but, not finding it.
On Freenas version 11.2... where do I alter this or change to one ZVOL or ISCSI extent as 1 single drive for HyperV VMs?
Thanks
View attachment 26409

I think you have this setup wrong. All those drives should be in one pool together

Sent from my SAMSUNG-SGH-I537 using Tapatalk

 

[Chris Moore]

Also, use version 11.1-U6

Sent from my SAMSUNG-SGH-I537 using Tapatalk

 

[Todd Evans]

Sorry for the delay with my reply, gentlemen...
I determined that "something" must be wrong with the hardware.... I actually changed the motherboard to another robust MB with 32 G RAM.
Among other testing, it appears that if I add any more than 4 drives total to this system, after any kind of disk operations, one or 2 or the drives report as failed, sometimes within 5 minutes.
I am now suspecting the back-plane on the Silverstone 8 bay case (CS380B) but haven't had the time recently to pinpoint it to that other than all new hardware except a 725 Watt PS as the other common denominator. No Google searches return any issues with this case, so... not positive.
Again, the previous system running I think v 9.3 ran for well over 500 days without an issue on the same Power Supply and Case.
As of now, it has run without an issue on the 4 (3TB) drives setup as 2 mirrors for over a week.. (I think I answered my own question regrading the setup of these.)
Previously I had this setup with 6 drives in a Raid6 configuration... I think :)
Current:

SO, with some researching, folks are saying that you get better performance with a mirrored setup. Not sure if that's true or not.
Again, I want this storage for Hyper-V Guests connected via iSCSI. I hope to try to do some bench marking soon, because whenever I copy a large semi-large file... the speed is a joke. Again, I need to find a common denominator for that. I really don't think it's network related because the Freenas is setup with 4 NICS in a LAGG:

And the system doing the copy has got 3 NICS Teamed.
Here is any idea of the flaky copying:

Pretty lame, huh?
Any are suggestions are MUCH appreciated.
Chris... you are suggesting downgrading to 11.1-U6 ?
Will this help some of my issues?

Thanks,
Todd

 

[Chris Moore]

SO, with some researching, folks are saying that you get better performance with a mirrored setup.

Based on the image in your first post, I am not sure what you are talking about. It looks like you created four separate pools with two disks in each and that is NOT a desirable configuration for any reason.
Please look at this guide to tell you what we need to know about your system to be able to give you any meaningful help:
https://forums.freenas.org/index.php?threads/updated-forum-rules-8-3-16.45124/

Then, you appear to need to review these guides about FreeNAS and ZFS:

Slideshow explaining VDev, zpool, ZIL and L2ARC
https://forums.freenas.org/index.ph...ning-vdev-zpool-zil-and-l2arc-for-noobs.7775/

Terminology and Abbreviations Primer
https://forums.freenas.org/index.php?threads/terminology-and-abbreviations-primer.28174/

 

[Chris Moore]

Freenas is setup with 4 NICS in a LAGG:

That is actually going to make things worse unless you have proper network configuration attached to it.
We need to know what kind of client you have also as well as what switch you are using.

 

[Chris Moore]

If you get your configuration right, you could get speeds like this:

 

[Chris Moore]

Chris... you are suggesting downgrading to 11.1-U6 ?

That is what I am using. The 11.2 is a RC (Release Candidate) which is still in development. You can use it if you like, but there could be features that don't work properly.