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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
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...
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.
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..
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
Have you tried you iSCSI or NAS performance from one Host to the open-e System.
I'm using this system in an production enviroment.
Using open-e as a NAS doesn't give me any performance problems.
Only the replication is taking a long time..
Hard to say whats the error here. What about your network envoriment. What switches u use between these 2 NAS. On the same switch?
I contacted support of open-e, they said I needed 'Volume replication', because I'm backing up a lot of small files. I need to update my NAS-R3 version first, but it's in a prodution enviroment, so I can't just update the version because of the downtime.. I'll try it soon..Quote:
Originally Posted by DSSpower
Thank you for your help.
Ok thanks for the info. I hope the performance get better with volume replication - cause if you have many small files FC will be the best choice. But thats right what support said - volume rep is much faster then nsync.Quote:
Originally Posted by rudy