So in theory (and the setup we have right now) is as followslogicmate wrote:
When we install 5.8, if HA-Node-1 has 2x1GB NICs for iSCSI client and HA-Node-2 has 2x1GB NICs for iSCSI client that would be 4x1GB NICSs for iSCSI clients total (theoretically 4000mbs total bandwidth with MPIO). How many NICs should be used for the sync channel? would we need 4x1GB NICs per server for sync? or 2x1GB per server is enough?Anatoly (staff):
Total bandwidth of Sync channel should be not less then total bandwidth of all the client connections.
- HA-Node #1 Windows 2008 x64 R2 - iSCSI SAN
- 4 x 1GB Sync channels
2 x 1GB iSCSI/Client channels
- 4 x 1GB Sync channels
2 x 1GB iSCSI/Client channels
- 4 x 1GB Sync channels
This had bugged me for a while but I just accepted the fact, however looking at my network utilization I noticed the following (example):
- HA-Node #1
- Sync Channel #1 20%
Sync Channel #2 20%
Sync Channel #3 20%
Sync Channel #4 20%
Client Channel #1 40%
Client Channel #2 40%
- Sync Channel #1 20%
Sync Channel #2 20%
Sync Channel #3 20%
Sync Channel #4 20%
Client Channel #1 40%
Client Channel #2 40%
- Sync Channel #1 20%
1. Total bandwidth of Sync channel should be not less then total bandwidth of all the client connections per node
or
2. Total bandwidth of Sync channel should be not less then total bandwidth of all the client connections combined of all nodes
Thanks,
Ara