Intermittent communication errors occur with a storage system

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This condition occurs when a network interface card (NIC) is running a slower speed.

Problem

The Copy Services Manager server is having intermittent communication errors with the storage system and an IWNR1587E or IWNH1560E error is being generated.

Action

Configure the DS8000® network interface card (NIC) and the Copy Services Manager server NIC to operate at 100 MBps full duplex (or higher) in a private dedicated LAN. The default setting for DS8000 NIC is auto-negotiate, which might cause the card to operate at a slower speed. If you need assistance configuring the DS8000 NIC, contact IBM® Software Support.

If the communication errors persist, contact DS8000 support.