Synchronization failing , Event ID 809 , Underlying Device

[hmadra]

Hello

I just installed a 2 Node Cluster
2 x HP G8 with 2x 2.4GHz 8Core CPU , 64GB Memory
2 x 10GB Sync Channels , P2P Connected in Team
RAID 1 - 6 1TB Samsung EVO 860 SSD Each on HP 420i with 1GB Cache

I Created a 2.5 TB Standard Device on Samsung SSDs. However , the Synchronization between the Nodes is failing after 2-3 Minutes with the error
"HA Device iqn ....... : command "Write". Underlying device response time is longer than expected. Response time is 10 Sec."
I have restarted SYNC few time manually, but it keeps failing.

Any Ideas.

thanks

HS

[Oleg(staff)]

First of all, we do not recommend any form of NIC teaming for ISCSI and synchronization traffic.
Also, do you have Jumbo frames enabled? If yes, please try to disable Jumbo frames.

[hmadra]

So.. No Jumbo Frames on the SYNC Link or Any Links , including iSCSI ?
Cause StarWind KB Says otherwise

https://knowledgebase.starwindsoftware. ... important/

[Oleg(staff)]

Some Broadcom based NICs have packet loss problems with Jumbo frames enabled.
As I already told, please try to disable Jumbo frames on both ISCSI and synchronization links.