Speedup replication

[rudy]

I'm using two Open-E NASR3 servers.
Every night I replicate the data from NAS1 to NAS2, about 150GB data.
This takes about 10 hours.

I read something about the snapshot functionality, can I speedup replication by taking a snapshot every minute / 5 minutes and replicate that immediatly to NAS2?

Thanks,
Rudy

[Joey]

Hey Rudy,

Man 10 hrs is so long.. it should take less time!!! r u running other tasks in the same time?? did u enable the replicate files???

And running snapshot every 5 minutes could kill your resources. schadual couple snapshots everyday and replicate them. Then run a full backup weekly. In this way you will not kill the system and your data will be safe...

[DSSpower]

Can you please provide more information about your HW configuration.

Seems like any network card is bad, or you just you a too simple one. Try it with the Intel Pro network controller.

[rudy]

Sorry for the slow response..

I'm using two of the following system:

http://www.ahead-it.be/shop.asp?cat=storage&NR=STIS410

Supermicro PDSMi+ ServerBoard
- 2 x Intel PCI-e Gigabit LAN

How did I setup replication:
- one volume group 350GB with 64GB snaphot
- create data replication backup method
- source share 'data'
- snapshot 'snap00000'
- target share 'data'
- Log replication errors: Yes
- Replicate whole files: Yes

My tasks list:
2008-03-10 00:00:19
nas1_to_nas2 Data replication OK Started

2008-03-10 13:06:18
snap00000 Snapshot OK Stopped

2008-03-10 13:06:19
nas1_to_nas2 Data replication OK Finished



Files overal:
8507781
Files transfered:
57280
Preparing time:
30715.97 sec
Sent:
6221.96 MB
Transfer:
0.13 MB/s


No other tasks running, so I don't know what I'm doing wrong..

[rudy]

Some more information:

Replication is preformed on a separate nic.

Load is also very low < 0.2

Ram:
Used memory (MB): 372.53
System cache (MB): 1585.34
Physical free memory (MB): 66.46

Used swap size (MB): 44.10
Free swap size (MB): 4051.89

Network controllers
Intel Corporation 82573E Gigabit Ethernet Controller (Copper) (rev 03)
Intel Corporation 82573L Gigabit Ethernet Controller

Network drivers:
Ethernet Channel Bonding Driver, v3.1.1
Intel(R) PRO/1000 Network Driver

[DSSpower]

Have you tried you iSCSI or NAS performance from one Host to the open-e System.