topic Issue with slow data copy speed between storage volumes in HPE Nimble Storage Solution Specialists

Issue with slow data copy speed between storage volumes

sangbae — Thu, 06 Feb 2025 14:05:31 GMT

Measuring storage speed on a Linux server
When replicating data between storage volumes on a server, the average speed is confirmed to be approximately 400 MB per second (Copy to Copy within the same storage).
I would like to know why the data replication speed between storage volumes is below 1GB (per second) on average.

Re: Issue with slow data copy speed between storage volumes

buzzsubash — Thu, 06 Feb 2025 06:56:34 GMT

Data replication between array happens over dedicated replication ports/management ports, based on the configuration on array. However, the copy between storage volumes on network happens over data subnet in case of iSCSI or FC.

Can you please past the output of netconfig --info <name> or a screenshot from Administration>network?

Re: Issue with slow data copy speed between storage volumes

sangbae — Mon, 10 Feb 2025 01:14:29 GMT

hi~~Thank you for the quick reply

Re: Issue with slow data copy speed between storage volumes

buzzsubash — Mon, 10 Feb 2025 01:25:44 GMT

Thanks for sharing screenshots.

So, there you have the answer. The data transfer between servers happens at max speed as the data traverse FC. And the replication happens over management port which is of 1 Gbps.

Re: Issue with slow data copy speed between storage volumes

sangbae — Mon, 10 Feb 2025 01:29:49 GMT

Thank you for your reply

Re: Issue with slow data copy speed between storage volumes

Sunitha_Mod — Fri, 14 Feb 2025 10:30:20 GMT

Hello @sangbae,

That's Perfect!

We are glad to know your concern has been addressed.