Re: DRBD sync speed

[Adam Weremczuk <adamw@matrixscience.com>]

Hi Dan,

Yes, I tried tweaking config following that link but for some reason the 
sync progress is not showing any more.
I guess I need to fiddle with it more.

I have 16 x 500 GB disks in each server and my layout is as below:

1-4: VD0: RAID10: 2 spans of 2 disks -> 1TB for Proxmox containers and VMs
5-14: VD1: RAID50: 2 spans of 5 disks -> 4TB for storage (which I'm 
trying to sync for redundancy using DRBD)
15-16: global hot spares

It appears to provide the best performance, resiliency and space 
utilisation balance.
I've been referring to this chart: 
https://www.datarecovery.net/articles/raid-level-comparison.aspx

Is there anything fundamentally wrong with my architecture?

Thanks,
Adam


On 10/10/18 16:54, Dan Ritter wrote:
> Have you read
> https://serverfault.com/questions/740311/drbd-terrible-sync-performance-on-10gige
>
> and edited your drbd.conf to suit?
>
> Unrelated: how is it that you decided on RAID50 for 4TB of disk space?
> If it's valuable, you should be looking at RAID10. If it's not
> valuable, why 50 over 6 or RAIDZ2 or 3?
>
> -dsr-