PowerProtect Data Manager：复制失败，并显示错误“Err：5009 文件复制操作失败（NFS：“I/O”错误）”

Summary: PowerProtect Data Manager：复制失败，并显示错误“Err：5009 文件复制操作失败（NFS：“I/O”错误）”

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Symptoms

PPDM 日志： 
Err: 5009 file-copy operation failed (nfs: "I/O" error)

DD 日志： 
Failed to do a filecopy, err = [5029: rpc operation/function failure, ddr/repl/lrepl_client.c, filecopy_handle_scaleout, 14606]
端口 2051 在 DD 之间打开。PPDM 的复制过程达到 99%，但会传输 0 字节数据，直到重新绑定 20 次后失败。 

Cause

交换机 MTU：1500
DD NIC MTU：9000

Resolution

确保交换机上的 MTU 与 DD 相同

Affected Products

PowerProtect Data Manager
Article Properties
Article Number: 000225799
Article Type: Solution
Last Modified: 11 Dec 2025
Version:  2
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