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In the case of iSCSI or NVMe/TCP connection, you can use the Data Digest function and Header Digest function by enabling the Digest settings on the compute node. Using these functions improves data reliability on the communication paths but degrades performance. To what extent the performance degrades depends on the environment of hosts, networks, and other components. Determine whether to use these functions based on your purpose.
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In the case of FC connection, if a storage node failure occurs, SCSI commands might return no response in the path to the faulty storage nodes. In this case, in addition to the timeout setting value for switching from the failed path to another path, recovery processing time is required, such as discarding SCSI commands that become unresponsive.
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(Cloud) Only the instance types based on the AWS Nitro System are supported. The instance types based on the Xen system are not supported. For details about the instance types based on the AWS Nitro System, see the following website:
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/instance-types.html#ec2-nitro-instances
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In iSCSI connection, Challenge-Handshake Authentication Protocol (CHAP) authentication can be used to verify if a connection request to the storage system comes from a valid compute node. CHAP authentication is configured by a system administrator. Depending on the CHAP authentication settings made by the system administrator, the connection from the compute node to the storage system might not succeed. In such a case, contact the system administrator.