Hi everyone

 

I'm testing out Unraid as a replacement for TrueNas.

When I transfer data to the array I get write speeds around 15-20 MB/s. I know it's not a very high speced system, but with TrueNas I was easily getting 100 MB/s. Any suggestions?

 

Setup:

CPU:Intel® Core™ i7-3770 CPU @ 3.40GHz

HVM:Enabled

IOMMU:Enabled

Cache:L1-Cache: 256 KiB, L2-Cache: 1 MiB, L3-Cache: 8 MiB

Memory:32 GiB DDR3 (max. installable capacity 32 GiB)

Network:bond0: fault-tolerance (active-backup), mtu 1500

 

eth1: 1000 Mbps, full duplex, mtu 1500

Kernel:Linux 6.1.64-Unraid x86_64

OpenSSL:1.1.1v

 

DEVICE    IDENTIFICATION                        TEMP.    READS    WRITES    ERRORS    FS    SIZE    USED    FREE
Parity    WDC_WD20EARS-00MVWB0_WD-WCAZAA242460 - 2 TB (sdi)    41 C    374,804    380,236    0    
Disk 1    WDC_WD20EZRX-00D8PB0_WD-WCC4M0123343 - 2 TB (sdj)    41 C    375,735    377,547    0    xfs    2 TB    62.1 GB  1.94 TB
Disk 2    WDC_WD20EZRX-00D8PB0_WD-WCC4M0125113 - 2 TB (sdk)    37 C    542    537    0    xfs    2 TB    14.0 GB  1.99 TB
Disk 3    WDC_WD20EZRX-00DC0B0_WD-WMC301177868 - 2 TB (sdl)    39 C    541    538    0    xfs    2 TB    14.0 GB  1.99 TB
Disk 4    WDC_WD20EZRX-00DC0B0_WD-WMC301181774 - 2 TB (sdn)    38 C    541    538    0    xfs    2 TB    14.0 GB  1.99 TB
Disk 5    WDC_WD20EZRX-00DC0B0_WD-WMC301182803 - 2 TB (sdo)    37 C    541    538    0    xfs    2 TB    14.0 GB  1.99 TB
Disk 6    WDC_WD20EARS-00S8B1_WD-WCAVY3598618 - 2 TB (sdm)    42 C    542    538    0    xfs    2 TB    14.0 GB  1.99 TB
Array of seven devices                        39.3 C    753,246    760,472    0        12 TB    132 GB   11.9 TB
Boot Device
DEVICE    IDENTIFICATION            TEMP.    READS    WRITES    ERRORS    FS    SIZE    USED    FREE
Flash    Transcend_128GB - 124 GB (sde)    *    1999    3487    0    vfat    124 GB    501 MB  123 GB

 

https://docs.unraid.net/unraid-os/manual/storage-management/#array-write-modes

Attach diagnostics to your NEXT post in this thread.

Setting Tunable to reconstruct write improved speeds to 75-80 MB/s

nas-diagnostics-20240127-0017.zip

While much better and maybe even acceptable it's still a bit of TrueNas.

Is this to be expected or is it possible to tweak it further?

 

I also wonder of ZFS should be prefered to xfs?

I read about it in the following link and found Zpool quite interesting. any thoughts on that?

Unraid | ZFS, Unraid Array, or Hybrid? Choosing the Right Storage Solution for Your Needs

 

Are any of your disks using that Marvell?

No they are all on a DELL H310 6Gbps SAS HBA FW:P20 9211-8i IT Mode ZFS FreeNAS unRAID 2* SATA Cable

11 hours ago, Famlank said:

While much better and maybe even acceptable it's still a bit of TrueNas.

Is this to be expected or is it possible to tweak it further?

TrueNAS uses a zfs pool that can be striped, you can get similar/identical speeds if you create an Unraid zfs pool with the same config, the array will always be slower since there's no striping, speed is limited by the slowest disk you have at that point.

Thanks everyone!

I followed this guide to setup zfs: Overview ZFS for Unraid (Create, Expand and Repair ZFS Pool on Unraid) (youtube.com)

Write speed is now ~ 110 MB/s over 1Gbit ethernet

Edited January 28, 20242 yr by Famlank