Definition of Throughput : Throughput refers to the amount of data transferred from or to the storage system over a specific period. It is measured in units such as MB/s or GB/s.

Relevance to Performance Diagnosis : When diagnosing performance issues on an E-Series storage system, measuring throughput over an hour helps determine the data handling capacity of the system. This metric can reveal whether the system is processing data efficiently or if there are bottlenecks.

Methodology : Tools within the SANtricity System Manager can be used to monitor and log throughput, providing insights into the performance characteristics and potential areas needing optimization.

References :

NetApp E-Series SANtricity System Manager documentation on performance monitoring

NetApp Implementation Engineer - SAN Specialist - E-Series manuals

Secure Connection Requirement : To manage the E-Series system over a secure connection, certain steps need to be taken to ensure encrypted communications.

Disabling Legacy Management Interface : This step ensures that only secure management interfaces are used, preventing the use of less secure legacy protocols.

Certificate Signing Request (CSR) : Completing the CSR on the system is necessary to generate a public/private key pair. This CSR can then be submitted to a certificate authority (CA) to obtain a signed certificate.

Importing CA Signed Certificates : Once the CA has signed the certificate, it must be imported into the E-Series system. This signed certificate ensures that the communication between the server and the system is encrypted and trusted.

References :

NetApp E-Series SANtricity System Manager documentation on secure management

NetApp Implementation Engineer - SAN Specialist - E-Series manuals

Verify Switch Port Status:

Step: Check the status of the FC ports on the Brocade switch.

Reason: The ports need to be enabled for communication.

 Explanation : To support multiple mirroring relationships, each with different recovery point objectives (RPOs), the administrator should create multiple mirror pairs. Each pair can be configured with its own schedule and RPO, allowing for tailored data protection strategies that meet specific needs.

 Reference : NetApp SANtricity Storage Manager Configuration and Provisioning Guide.

To increase the throughput of an iSCSI host port on a NetApp E-Series system, you should change the maximum transmission unit (MTU) setting from its default value.

Maximum Transmission Unit (MTU): The MTU size determines the largest packet that can be sent over the network without needing to be fragmented. By increasing the MTU size, you can reduce the overhead associated with packet processing and improve throughput. For example, setting the MTU to 9000 bytes (Jumbo Frames) can enhance performance for iSCSI traffic.

References:

NetApp E-Series SANtricity Storage Manager User Guide

NetApp Best Practices for Configuring iSCSI with E-Series

To create a Dynamic Disk Pool (DDP), the minimum number of drives required is 12. This minimum requirement ensures that there is enough capacity and redundancy to maintain the performance and data protection characteristics that DDPs provide.

Dynamic Disk Pools are designed to optimize data distribution and rebuild times. By using 12 drives as a baseline, the system can efficiently distribute data and parity information across the drives, improving fault tolerance and rebuild performance compared to traditional RAID configurations.

References:

NetApp E-Series Storage System Documentation

SANtricity System Manager User Guide

Step: Replace the SFP (Small Form-factor Pluggable) module in the controller port.

Reason: Faulty SFPs can cause link issues and errors.