MDADM mirror or ZFS mirror?

[Brayden9707]

I would like to know which is best for performance. MDADM mirror or ZFS Mirror.

There will be 2 drive pools, each containing 2 matching disks.

 

A single drive on its own I can get easily 100~MB/s (reads) over the network.

I setup a freenas zfs pool not really knowing what i was up against and i got 60MB/s (reads) over the network. I was hoping for better performance.

 

Senerio:

2x 4tb seagate nas drives

2x 2tb wd reds

Intel G1830 (dual core @2.80 GHz)

8GB of ram

1Gb Ethernet link (might be upgraded if there is a need)

Drives are on the intel chipset sata ports but i might buy a lsi based hba and flash it.

 

Thanks for your help!

[BDunkz]

Why not try ssd write caching 

[BDunkz]

Also please help me with my nas build post

[Brayden9707]

3 minutes ago, BDunkz said:

Why not try ssd write caching 

The Mobo i'm using only has 4x sata ports. There isn't any left

[BDunkz]

Take a look at this one https://www.amazon.com/ASRock-Rack-Mini-Motherboards-C2550D4I/dp/B00GG94YDS/ref=as_li_ss_tl?ref_=nav_signin&&linkCode=ll1&tag=diynas2016-20&linkId=5c14725311c8924c3c20a2ba0550706b

[Brayden9707]

Just now, BDunkz said:

Take a look at this one https://www.amazon.com/ASRock-Rack-Mini-Motherboards-C2550D4I/dp/B00GG94YDS/ref=as_li_ss_tl?ref_=nav_signin&&linkCode=ll1&tag=diynas2016-20&linkId=5c14725311c8924c3c20a2ba0550706b

I'm not looking to buy a new hardware.

[BDunkz]

Just now, Brayden9707 said:

I'm not looking to buy a new hardware.

Ok well than sorry but I don't think I can help you 

[Brayden9707]

Just now, BDunkz said:

Ok well than sorry but I don't think I can help you 

No worries, Thanks for your ssd caching suggestion, it is a good idea. I might end up using this if I end up buying a hba card.

[SCHISCHKA]

mdadm uses less resources than ZFS.

BTRFS has CoW and self healing and performs just as good as mdadm. Give BTRFS a try.

[SCHISCHKA]

Re SSD cache:

you will find your drives have enough cache built in to handle home network use. SSD cache helps collect lots of small writes and when ready it dumps them sequentially to the disk. You are running a NAS not a database or web server so this will not help.

[Brayden9707]

2 minutes ago, SCHISCHKA said:

Re SSD cache:

you will find your drives have enough cache built in to handle home network use. SSD cache helps collect lots of small writes and when ready it dumps them sequentially to the disk. You are running a NAS not a database or web server so this will not help.

I will definitely take a look at BTRFS. I thought as much, besides the system is only using 2 drives per pool.