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Forum Discussion
ReadyNAS 4220 Transfer speed drop
Dear all I have a problem during the transform from the NAS storage , the speed start at 3 Gbps and decrease to 1 Gbps some time to Zero and then back to 1 Gbps , where is the problem might be ? ...
What firmware is running on the NAS?
What protocol are you using for the transfer? Are you seeing this with both reads and writes? If not, which transfer direction?
What is the other device? Is it directly connected to the NAS SFP+ port? If not, can you give some more details on the network path?
Dear Stephen
the firmware is 6.9.3 , we used iSCS protocol and the problem with both direction
the other device is HP DL380 G7 server and connected directly to the NAS through 10G SFP.
Is this a large file transfer test, or are you copying a lot of small files? If the latter, you might want to try a large file transfer.
Are snapshots enabled? Normally you'd have snapshots turned off on the NAS LUN, since leaving them on will fragment the LUN (and use a lot of snapshot space).
Also, is this a new problem?
Yes , the problem happended with large file also with alot of small files , the snapshot disabled .
in fact i'm new to NAS world and i'm in a place contain server and two NAS storage that connected to the server
with iSCS via fiber link NIC
- is this the best way to connect my storage ?
AhmedMachy wrote:
- is this the best way to connect my storage ?
That should be a good way. My own system (an RN526X) is connected via a 10GbaseT.
It's worth downloading the log zip file from the NAS, and looking at disk_info.log to confirm the disk health, and also looking in system.log and kernel.log for any iSCSI related errors. Network_settings.log should give you some stats on the fiber link.
If this is a new installation, you should have 90 days of phone support - so you could contact Netgear via my.netgear.com.
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